Linux
Monthly
Local privilege escalation and kernel memory corruption in the Linux kernel's HackRF Software-Defined Radio media (V4L2) driver arises from a use-after-free and double-free in the hackrf_probe() error path. When probe fails after v4l2_device_register() has already exposed the device node, the driver frees the hackrf_dev structure directly with kfree() while an already-open file descriptor still holds a reference, so subsequent ioctl() or close() calls dereference and re-free freed memory. There is no public exploit identified at time of analysis; EPSS is 0.02% (5th percentile) and it is not listed in CISA KEV.
Out-of-bounds heap write in Linux kernel CAN gateway CRC8 checksum processing allows adjacent network attackers to corrupt kernel memory and potentially achieve code execution. The cgw_csum_crc8_rel() function in the CAN gateway subsystem uses raw negative index values instead of bounds-checked variables when accessing canfd_frame data, enabling writes up to 56 bytes before the heap object. Exploitation requires CAP_NET_ADMIN capability to configure CAN gateway CRC8 checksums. EPSS exploitation probability is very low (0.02%, 7th percentile) and no active exploitation has been reported. Vendor patches available across multiple kernel versions (5.10.253, 5.15.203, 6.1.168, 6.6.131, 6.12.80, 6.18.21, 6.19.11, 7.0).
Out-of-bounds memory access in Linux Kernel's KVM subsystem for LoongArch architecture allows local authenticated attackers with low privileges to read limited kernel memory and cause system crashes. The vulnerability stems from improper handling of empty EIOINTC coremap values in eiointc_update_sw_coremap(), resulting in invalid array indexing into kvm_arch::phyid_map::phys_map[]. While CVSS rates this 7.3 HIGH, the EPSS score of 0.02% (4th percentile) indicates minimal real-world exploitation activity. No active exploitation (not in CISA KEV) or public POC has been identified. Vendor patches are available across multiple stable kernel branches (6.18.21, 6.19.11, 7.0, and mainline).
Denial of service in the Linux kernel's s390 (IBM Z) secure-execution memory subsystem allows storage donated to the Ultravisor to trigger unresolvable secure-storage-access exception loops. Because donated pages lack the PG_arch_1 bit, the prior fixup path (arch_make_folio_accessible()) returned immediately without exporting the page, causing the fault to repeat indefinitely. No public exploit identified at time of analysis; EPSS is negligible (0.02%, 4th percentile) and exploitation is confined to s390 Protected Virtualization guests.
Use-after-free in Linux kernel AMD GPU driver allows local authenticated users to potentially execute arbitrary code, escalate privileges, or cause denial of service. The amdgpu_amdkfd_submit_ib() function in the AMD KFD (Kernel Fusion Driver) prematurely releases a DMA fence reference before waiting on it, creating a race condition where the fence memory may be freed before use. Vendor-released patches are available for multiple stable kernel branches (6.1.168, 6.6.131, 6.12.80, 6.18.21, 6.19.11, 7.0). EPSS exploitation probability is very low at 0.02% (7th percentile), and no public exploit or active exploitation has been identified at time of analysis.
Memory management flaw in Linux kernel's Cadence macb network driver causes kernel warning and potential denial of service. Specifically affects the macb Ethernet driver on ARM64 ZynqMP platforms (kernel versions 6.1+ containing commit 6bc8a5098bf4). The vulnerability stems from calling napi_consume_skb() with IRQs disabled during TX packet cleanup, violating kernel API contracts and potentially causing system instability under network load. EPSS exploitation probability is very low (0.02%, 7th percentile) with vendor-released patches available across all stable kernel branches (6.1.168, 6.6.131, 6.12.80, 6.18.21, 6.19.11, 7.0). No active exploitation or public exploit code identified at time of analysis.
Out-of-bounds array access in Linux kernel KVM subsystem on LoongArch allows local authenticated attackers with low privileges to execute arbitrary code, escalate privileges, or cause denial of service by passing negative cpuid values to kvm_get_vcpu_by_cpuid(). The function lacks bounds checking before indexing phyid_map::phys_map[], enabling read/write beyond array boundaries with container escape potential (CVSS scope change). Vendor patches available across multiple stable kernel branches (6.12.80, 6.18.21, 6.19.11). EPSS score of 0.02% indicates low automated exploitation likelihood, with no confirmed active exploitation or public POC at time of analysis.
A workqueue deadlock in Linux kernel NVMe-over-Fabrics target (nvmet) allows remote denial of service via recursive locking during controller disconnect. The nvmet subsystem's async event handler can trigger reentrant workqueue completion when nvmet_ctrl_free() flushes work on the same queue (nvmet-wq) that invoked it, causing a lockdep-detected recursive lock scenario. EPSS score of 0.02% indicates very low probability of exploitation in the wild. Patches available for kernel versions 6.12.80, 6.18.21, 6.19.11, and mainline 7.0 via upstream commits.
Use-after-free in Linux kernel futex subsystem allows local authenticated attackers to achieve code execution, privilege escalation, or denial of service via sys_futex_requeue() with mismatched flags. Discovered through automated LLM analysis by Nicholas, this affects kernel versions 6.7 through 6.19.x, with patches available in 6.12.80, 6.18.21, 6.19.11, and 7.0. EPSS score of 0.02% (5th percentile) indicates low observed exploitation probability, and no active exploitation or public POC has been identified. The vulnerability requires local access with low-privilege authenticated user credentials (PR:L), making it a post-compromise escalation vector rather than a remote entry point.
Address calculation error in Linux kernel KVM on ARM64 allows local authenticated attackers with low privileges to corrupt memory descriptors, potentially enabling container escape or privilege escalation to compromise host integrity and confidentiality. The vulnerability affects KVM's stage-1/stage-2 page table descriptor swapping logic where pointer arithmetic incorrectly multiplies the offset by 8, causing writes to unintended memory locations. Vendor patches available for Linux 6.19.11 and mainline with EPSS exploitation probability at 5th percentile, indicating low observed exploitation despite high CVSS severity.
Denial of service via CPU soft lockup in Linux kernel's wlcore Wi-Fi driver (versions 5.10 through 7.0) occurs when memory allocation fails during wireless frame transmission. Incorrect error code return (-EAGAIN instead of -ENOMEM) triggers infinite retry loop while holding critical mutex, causing system unresponsiveness. Vendor-released patches available across all affected stable kernel branches (5.10.253, 5.15.203, 6.1.167, 6.6.130, 6.12.78, 6.18.20, 6.19.10, 7.0). CVSS 7.5 (High) reflects network attack vector with no authentication required, though EPSS score of 0.02% (7th percentile) indicates low observed exploitation probability. No active exploitation confirmed (not in CISA KEV); no public exploit identified at time of analysis.
Use-after-free race condition in Linux kernel Wi-Fi cfg80211 subsystem allows local authenticated users to trigger kernel crashes or potentially execute code. When a nl80211 socket closes while a peer measurement (PMSR) request is active, concurrent interface teardown can leave a scheduled work item (pmsr_free_wk) that later invokes the driver's abort callback on already-freed interface structures. EPSS score of 0.02% (7th percentile) indicates very low probability of exploitation in the wild. Patches available across all supported kernel branches since commit 9bb7e0f24e7e (introduced in Linux 5.0), with fixes released in stable versions 6.1.167, 6.6.130, 6.12.78, 6.18.20, and 6.19.10.
Use-after-free in Linux kernel tracing subsystem allows local authenticated attackers to achieve arbitrary code execution, privilege escalation, or denial of service. The vulnerability occurs when deleting tracing instances with copy_trace_marker enabled, where improper RCU synchronization leaves freed memory accessible. Exploitation requires local access with low privileges to manipulate kernel tracing facilities. EPSS score of 0.02% (4th percentile) indicates low observed exploitation probability. Vendor patches available across multiple stable kernel versions (6.18.20, 6.19.10, 7.0).
Race condition in Linux kernel SMB Direct receive credit management allows remote denial of service against SMB3 network storage services. The flaw enables remote unauthenticated attackers to exhaust receive buffer credits through timing exploitation of the gap between hardware packet reception and completion processing, causing service disruption. EPSS exploitation probability is low (0.02%, 4th percentile), and patches are available from kernel.org for versions 6.18.x, 6.19.x, and 7.0. This affects only systems using SMB Direct (RDMA-enabled SMB3), not standard SMB implementations.
Denial of service in Linux kernel SMB server (ksmbd) affects versions 6.18 through 7.0-rc via race condition in SMBDirect receive credit management. Remote unauthenticated attackers can trigger resource exhaustion through crafted SMB packets exploiting the window between hardware reception and completion processing. Vendor patches released for stable branches 6.18.11, 6.19.1, and mainline 7.0. Low EPSS score (0.02%) indicates limited exploitation interest despite network attack vector and no authentication requirement.
Use-after-free in Linux kernel SMB server (ksmbd) RDMA handling allows remote unauthenticated attackers to execute arbitrary code, escalate privileges, or crash the system via crafted SMB Direct connections. The vulnerability arises when batched RDMA send operations without IB_SEND_SIGNALED flags are prematurely freed during connection failures, causing memory corruption. Vendor patches are available for kernel versions 6.18.11, 6.19.1, and 7.0. EPSS score of 0.02% suggests low observed exploitation probability, and no active exploitation or public POC is confirmed at time of analysis, though the critical CVSS score (9.8) reflects severe potential impact if the SMB Direct feature is enabled.
Out-of-bounds read and write in OP-TEE OS PKCS#11 Trusted Application (versions 3.13.0-4.10.0) allows authenticated local attackers with low privileges to read up to 7 bytes beyond heap boundaries and write arbitrary attribute values outside allocated buffers, potentially compromising the integrity and confidentiality of the Trusted Execution Environment. The vulnerability affects Arm TrustZone-based TEE implementations running alongside Linux kernels on Cortex-A cores. Patches available in three upstream commits targeting version 4.11.0. EPSS data not provided; no CISA KEV status indicating targeted rather than widespread exploitation. CVSS 8.7 reflects high confidentiality/integrity impact with scope change, representing potential TEE compromise from the normal world.
Use-after-free in the Linux kernel's kernel TLS (net/tls) data path lets a local attacker corrupt kernel memory by racing the -EBUSY crypto-backlog error path of tls_do_encryption(). When crypto_aead_encrypt() returns -EBUSY, both the async tls_encrypt_done() callback and the synchronous error path clean up encrypt_pending and the scatterlist, double-decrementing a sentinel so a later sendmsg frees an in-flight tls_rec while a cryptd callback is still pending. Despite an NVD CVSS of 9.8, EPSS is 0.01% and there is no public exploit identified at time of analysis, reflecting the narrow race conditions required.
Use-after-free in Linux kernel CAN raw socket implementation allows local authenticated attackers to corrupt memory and potentially achieve code execution. The vulnerability stems from premature deallocation of percpu uniq storage in raw_release() while raw_rcv() may still access it via deferred RCU callbacks. Patches available for kernel versions 6.12.83, 6.18.24, 6.19.14, and 7.0.1. EPSS exploitation probability remains low (0.02%, 5th percentile) with no active exploitation confirmed at time of analysis.
Use-after-free in Linux kernel CXL (Compute Express Link) subsystem allows local authenticated attackers to corrupt memory and potentially execute arbitrary code or cause kernel panics. The flaw occurs in cxl_detach_ep() during device removal when parent port references are freed prematurely, before child operations complete. Affects Linux kernel 6.3 through 7.0-rc5; patched in versions 6.12.80, 6.18.21, 6.19.11, and 7.0. EPSS score of 0.02% indicates low exploitation probability. No active exploitation or public exploit code identified at time of analysis.
Out-of-bounds memory access in Linux kernel perf subsystem allows local authenticated attackers with low privileges to achieve high confidentiality, integrity, and availability impact. The vulnerability occurs when group_sched_in() fails during performance monitoring event handling and event inheritance uses the wrong PMU (Performance Monitoring Unit) context, leading to improper rollback and memory corruption. Despite high CVSS score (7.8), EPSS probability indicates very low real-world exploitation likelihood (0.02%, 5th percentile). Vendor patches available across multiple stable kernel branches (6.6.131, 6.12.80, 6.18.21, 6.19.11, 7.0) per git.kernel.org commit references.
Use-after-free in Linux Kernel platform driver core allows local authenticated attackers to achieve high-severity impacts including code execution, privilege escalation, or denial of service. The vulnerability stems from unsafe access to the driver_override field during device probing when the bus match() callback executes without device lock protection. Patches are available across multiple kernel branches (6.12.80, 6.18.21, 6.19.11, 7.0) per vendor commits. EPSS score of 0.02% (5th percentile) indicates low observed exploitation probability, and no CISA KEV listing exists, suggesting this remains a theoretical risk rather than actively exploited threat despite the high CVSS 7.8 score.
Signed integer overflow in the Linux kernel's BPF interpreter enables local attackers with low privileges to achieve out-of-bounds memory access and potentially execute arbitrary code. The flaw occurs when the 32-bit signed division/modulo operations handle INT_MIN (0x80000000), causing the abs() macro to trigger undefined behavior that creates a mismatch between the verifier's abstract interpretation and the interpreter's runtime behavior. With an EPSS score of 0.02% and no confirmed active exploitation, the primary risk is to systems where unprivileged users can load BPF programs, though default kernel configurations typically restrict BPF to privileged users. Patches are available across multiple stable kernel branches (6.6.131, 6.12.80, 6.18.21, 6.19.11).
Use-after-free in Linux kernel XFRM subsystem allows local authenticated attackers to achieve arbitrary code execution with high privileges. The vulnerability arises when XFRM policy hash threshold work items (policy_hthresh.work) outlive network namespace teardown, dereferencing freed struct net memory in xfrm_hash_rebuild(). Vendor patches available across multiple stable kernel versions (6.12.80, 6.18.21, 6.19.11, 7.0) confirm the issue affects kernels since commit 880a6fab8f6b. EPSS score of 0.02% (5th percentile) indicates low observed exploitation probability despite CVSS:3.1 score of 7.8; no CISA KEV listing or public POC identified at time of analysis.
Buffer over-read in Linux kernel Bluetooth L2CAP allows adjacent network attackers to disclose sensitive kernel memory and crash systems via malformed Enhanced Credit Based Connection Requests. Affects multiple stable kernel versions (6.12.x, 6.18.x, 6.19.x). Vendor patches available for all affected branches. EPSS score of 0.02% indicates low observed exploitation probability despite the network-adjacent attack vector and lack of required authentication. No public exploit identified at time of analysis.
Use-after-free in Linux kernel Bluetooth MGMT subsystem allows local authenticated users to achieve arbitrary code execution, privilege escalation, or denial of service. The vulnerability stems from improper condition checking in mgmt_add_adv_patterns_monitor_complete(), which can leave dangling pointers after freeing memory without unlinking from the list. Patches available across multiple kernel versions (6.12.80, 6.17, 6.18.21, 6.19.11, 7.0). No evidence of active exploitation (not in CISA KEV), low EPSS score (0.02%, 5th percentile) suggests limited attacker interest despite high CVSS severity.
Use-after-free in Linux kernel Open vSwitch module causes system crash when deleting network interfaces on PREEMPT_RT kernels. The vulnerability is confirmed patched in multiple stable kernel versions (5.10.253, 5.15.203, 6.1.168, 6.6.131, 6.12.80, 6.18.21, 6.19.11, 7.0) with upstream fixes available via kernel.org commits. EPSS score of 0.02% (7th percentile) indicates very low exploitation likelihood. No active exploitation confirmed (not in CISA KEV). Local authenticated access required (CVSS AV:L/PR:L) with high impact (CVSS 7.8), but exploitation depends on PREEMPT_RT kernel configuration and specific Open vSwitch teardown race conditions.
Double-free vulnerability in Linux kernel SMC (Shared Memory Communications) splice handling allows local authenticated attackers to trigger use-after-free conditions and kernel panic. The flaw occurs when tee(2) duplicates an SMC pipe buffer: both the original and cloned pipe_buffer share the same smc_spd_priv pointer, causing smc_rx_pipe_buf_release() to free the same memory twice on pipe cleanup. This escalates from KASAN-detected slab-use-after-free to NULL pointer dereference in smc_rx_update_consumer(), resulting in denial of service via kernel crash. Vendor patches available across multiple stable kernel branches (5.10.253, 5.15.203, 6.1.168, 6.6.131, 6.12.80, 6.18.21, 6.19.11, 7.0). EPSS exploitation probability is low (0.02%, 7th percentile) with no public exploit or CISA KEV listing at time of analysis.
Double-free memory corruption in Linux kernel bcmasp network driver allows local authenticated attackers with low privileges to achieve arbitrary code execution, privilege escalation, or system crash. The vulnerability affects kernel versions 6.6 through early 7.0 release candidates. Vendor patches available across stable branches (6.12.80, 6.18.21, 6.19.11, 7.0). EPSS score of 0.02% (5th percentile) indicates very low real-world exploitation probability, and no active exploitation or public POC has been identified. This represents a low-priority issue for most environments despite the 7.8 CVSS score, as it requires local authenticated access and affects only systems using the specific bcmasp Broadcom network driver.
Out-of-bounds memory write in Linux kernel iavf (Intel Adaptive Virtual Function) driver allows local authenticated attackers with low privileges to achieve high confidentiality, integrity, and availability impact via race condition during concurrent ethtool operations. The vulnerability stems from inconsistent use of queue counters (real_num_tx_queues vs num_active_queues vs num_tx_queues) across ethtool statistics functions, enabling memory corruption when changing network channels via 'ethtool -L' while simultaneously querying statistics with 'ethtool -S'. Patches available for kernel versions 6.12.80, 6.18.21, 6.19.11, and 7.0. EPSS exploitation probability is low (0.02%, 5th percentile) with no public exploit or active exploitation identified at time of analysis.
Use-after-free in Linux kernel packet socket handling allows local attackers with low privileges to achieve kernel memory corruption, potentially leading to privilege escalation, information disclosure, or denial of service. The vulnerability stems from a race condition in packet_release() where NETDEV_UP events can re-register a socket into a fanout group's array after cleanup begins but before the socket number is zeroed, leaving dangling pointers. Patches are available across multiple stable kernel versions (5.10.253, 5.15.203, 6.1.168, 6.6.131, 6.12.80, 6.18.21, 6.19.11, 7.0). EPSS score is low (0.02%, 7th percentile) and no active exploitation is confirmed (not in CISA KEV), suggesting limited real-world exploitation despite high CVSS 7.8 rating.
Type confusion in Linux kernel team driver allows local authenticated users to trigger memory corruption and potential privilege escalation. The team_setup_by_port() function incorrectly copies header_ops from non-Ethernet lower devices (such as GRE interfaces) without proper context validation, causing callbacks like dev_hard_header() to interpret netdev_priv() as the wrong structure type when processing stacked network topologies (e.g., gre → bond → team). While CVSS rates this 7.8 (High), EPSS probability is very low at 0.02% (5th percentile), and no active exploitation or public POC has been identified. Vendor patches are available across multiple stable kernel branches (6.12.80, 6.18.21, 6.19.11, 7.0).
Use-after-free in Linux kernel ICSSG PRU Ethernet driver allows remote code execution with CVSS 9.8 scoring. Affects TI ICSSG network driver in kernels 6.15 through 7.0 (patched in 6.19.11 and 7.0). The flaw causes CPPI descriptors to be freed before timestamp processing completes on every received packet, creating a exploitable memory corruption condition. Despite critical CVSS scoring, EPSS probability is very low (0.02%, 5th percentile) and no active exploitation or public POC has been identified. The network attack vector (AV:N) combined with zero-day timing suggests this may be scored for worst-case remote exploitation scenario, but actual exploitability via network packets requires deeper investigation of ICSSG hardware context and packet processing pipeline.
Use-after-free in Linux kernel Bluetooth Intel driver enables local privilege escalation to kernel code execution. Affects Linux kernel 4.3 through 7.0-rc5, with patches available in versions 6.6.131, 6.12.80, 6.18.21, 6.19.11, and 7.0. Exploitation requires local authenticated access with low privileges (CVSS PR:L). EPSS score of 0.02% (5th percentile) indicates low probability of widespread exploitation. No public exploit code or active exploitation confirmed at time of analysis, though technical details in CVE description provide implementation roadmap.
Out-of-bounds write in the Linux kernel macb Ethernet driver allows local authenticated users with low privileges to corrupt kernel memory, potentially leading to privilege escalation, denial of service, or information disclosure. The vulnerability affects the ethtool statistics collection path where gem_get_ethtool_stats() writes statistics for MACB_MAX_QUEUES regardless of the actual number of active queues, causing a 760-byte buffer overflow when fewer queues are configured. KASAN validation confirms heap corruption with a write beyond allocated vmalloc region boundaries. No active exploitation confirmed (not in CISA KEV), and EPSS score is low (0.03%, 10th percentile), indicating minimal observed exploitation activity. Patches available across multiple stable kernel branches (5.10.253, 5.15.203, 6.1.168, 6.6.131, 6.12.80, 6.18.21, 6.19.11, 7.0).
Use-after-free in Linux kernel RDMA/EFA driver allows local authenticated users with low privileges to execute arbitrary code with high confidentiality, integrity, and availability impact. The vulnerability affects the admin queue completion handling where completion context data is accessed after being freed, creating a window for memory corruption exploitation. Affects kernel versions from 5.12 through 7.0-rc7, with vendor patches available for stable branches 6.18.21, 6.19.11, and 7.0. EPSS score of 0.02% (4th percentile) indicates low observed exploitation probability, and no public exploit code or CISA KEV listing identified at time of analysis.
Use-after-free in Linux kernel's xe GPU driver allows local authenticated users to execute arbitrary code with kernel privileges. The vulnerability occurs in the SR-IOV physical function migration restore path when error handling fails to nullify a freed data pointer, enabling subsequent write operations to reference deallocated memory. With CVSS 7.8 (High) and very low EPSS (0.02%), this represents typical kernel memory corruption risk requiring local access and low privileges. Vendor patches are available for affected 6.19 and 7.0-rc versions.
Use-after-free in Linux kernel meson-spicc SPI driver allows local authenticated attackers to escalate privileges or crash the system. The vulnerability stems from a double-put reference counting error during driver removal - devm_spi_register_controller() already handles cleanup automatically, but meson_spicc_remove() explicitly calls spi_controller_put() again, releasing the same memory twice. EPSS probability is low (0.02%, 5th percentile), no active exploitation confirmed, and vendor patches are available across multiple kernel versions (6.12.80, 6.18.21, 6.19.11, 7.0). This targets systems using Amlogic Meson SoC SPI controllers, requiring local authenticated access to exploit.
Use-after-free in Linux kernel AMD display driver allows local authenticated users to execute arbitrary code, corrupt memory, or cause denial of service. Affects systems with AMD graphics using Display Stream Compression (DSC) and multi-stream transport (MST), particularly laptops with integrated displays and external DP-MST monitors. The vulnerability arises when mode changes occur simultaneously with DSC reconfigurations, causing improper stream lifecycle management. Vendor patch available across multiple kernel versions (6.12.80, 6.18.21, 6.19.11, 7.0). EPSS score of 0.02% indicates low exploitation probability in the wild, with no CISA KEV listing or public exploit identified at time of analysis.
Improper locking in the Linux kernel's PMBus hardware monitoring core (drivers/hwmon/pmbus) allows a local low-privileged attacker to trigger a race condition against unserialized regulator voltage operations, corrupting shared PMBus register state and per-page data. The pmbus_regulator_get_voltage(), set_voltage(), and list_voltage() paths accessed shared data without holding update_lock, and the fix reworks notification delivery through a worker to avoid a mutex deadlock. There is no public exploit identified at time of analysis and EPSS is very low (0.02%), consistent with a hardware-dependent local integrity/availability issue rather than a broadly exploitable flaw.
Use-after-free in Linux kernel SPI subsystem (fsl_lpspi driver) causes NULL pointer dereference when DMA channels are torn down while SPI transfers are active. Local attackers with low privileges can trigger denial of service or potentially execute arbitrary code on affected systems running Linux kernel versions from 4.10 through 7.0-rc2, particularly impacting embedded and IoT devices using Freescale LPSPI controllers. EPSS score of 0.02% indicates very low observed exploitation probability, and no public exploit code or active exploitation has been identified at time of analysis. Vendor-released patches available across all affected stable kernel branches (5.10.253, 5.15.203, 6.1.168, 6.6.131, 6.12.80, 6.18.21, 6.19.11, 7.0).
Out-of-bounds read in the Linux kernel io_uring fdinfo handler allows a local, low-privileged user to leak adjacent kernel memory (and potentially crash the kernel) by reading /proc fdinfo for an io_uring instance created with IORING_SETUP_SQE_MIXED. The flaw affects Linux 6.19 and the 7.0 release candidates (rc1-rc7) and is fixed in 6.19.11 and 7.0. EPSS is negligible (0.02%, 5th percentile), there is no public exploit identified at time of analysis, and it is not on the CISA KEV list.
Local privilege escalation and kernel memory corruption in the Linux kernel's Intel Xe (drm/xe) GPU driver arises from incorrect prev/next tracking in the VM bind ioctl unwind path, affecting kernel 6.8 through 7.0-rc6 and stable branches before the 6.12.80/6.18.21/6.19.11 fixes. When a vectored bind operation fails and unwinds, the driver leaves overlapping GPU virtual-memory areas (VMAs) in place, corrupting VM state and triggering a WARNING at xe_vm.c:1217; a local user with access to the DRM/render device can reach this via crafted xe_vm_bind_ioctl calls (as observed with the vkd3d Direct3D-to-Vulkan translation layer). No public exploit identified at time of analysis, and EPSS is negligible at 0.02%.
Information disclosure and memory corruption in the Linux kernel's in-kernel SMB3 server (ksmbd) arises from smb2_calc_max_out_buf_len() being called with a hardcoded header length instead of the true offsetof() of the response ->Buffer field, after the read-compound rework in commit e2b76ab8b5c9. On affected kernels running ksmbd (6.6 through 7.0-rc3, plus stable backports), a miscalculated maximum output buffer length can cause the server to over-read into the response IOV, leaking adjacent kernel memory to an SMB client or corrupting response buffers. No public exploit identified at time of analysis, and EPSS is very low (0.03%, 9th percentile), consistent with a niche, non-default kernel subsystem rather than mass exploitation.
Memory exhaustion and kernel crash in Linux kernel's ksmbd SMB server allows remote unauthenticated denial of service via crafted lock requests. The smb2_lock() function contains three critical error-handling defects: memory leaks when vfs_lock_file() returns unexpected errors, stale error propagation in UNLOCK operations, and NULL pointer dereference during rollback when smb_flock_init() allocation fails. CVSS vector indicates network-accessible, low-complexity exploitation requiring no authentication. EPSS score of 0.02% (7th percentile) suggests minimal observed scanning activity, and no KEV listing confirms no widespread exploitation detected. However, the network attack vector (AV:N) and high availability impact (A:H) make this a realistic DoS risk for systems running ksmbd. Vendor patches available across stable kernel series 5.15-6.19.
Remote unauthenticated denial-of-service in Linux kernel's ksmbd SMB server allows attackers to terminate arbitrary active user sessions by sending crafted multichannel binding requests with invalid credentials. The flaw affects ksmbd (kernel-mode SMB server) across multiple stable kernel branches (6.1.x through 7.0). Vendor patches available for all affected versions. EPSS score of 0.08% (23rd percentile) indicates low observed exploitation likelihood, with no CISA KEV listing or public POC identified at time of analysis. The CVSS 8.2 rating reflects network-accessible attack surface with high availability impact, though actual exploitation requires specific SMB multichannel configuration.
Memory corruption in the Linux kernel sma1307 ASoC driver allows local authenticated users to trigger a double-free condition leading to potential privilege escalation, denial of service, or information disclosure. The vulnerability stems from improper cleanup of device-managed memory allocations in error paths within the sma1307_setting_loaded() function, where devm_kzalloc()-allocated resources are incorrectly freed with kfree(), causing devres to later release the same memory a second time. Vendor patches are available across multiple stable kernel branches (6.18.21, 6.19.11, 7.0). EPSS score of 0.02% (4th percentile) indicates low observed exploitation probability, and no active exploitation or public POC has been identified.
Use-after-free in Linux kernel ISO-TP CAN protocol driver allows local authenticated users to read freed memory, corrupt kernel state, or execute arbitrary code with kernel privileges. Affects kernels from commit 96d1c81e to 6.6.131, 6.12.80, 6.18.21, and 6.19.11. Vendor-released patches available across stable kernel branches. EPSS score 0.02% (5th percentile) indicates low probability of mass exploitation, and no public exploit identified at time of analysis, though CVSS 7.8 reflects high local privilege escalation potential if successfully exploited.
Use-after-free in Linux kernel media subsystem allows local authenticated attackers to potentially execute arbitrary code, escalate privileges, or cause system crashes. The race condition between MEDIA_REQUEST_IOC_REINIT and VIDIOC_REQBUFS(0) affects request-capable V4L2 media devices in kernels since version 4.20. Patches are available across multiple stable kernel branches (5.10.253, 5.15.203, 6.1.168, 6.6.131, 6.12.80, 6.18.21, 6.19.11, and 7.0). EPSS score of 0.02% indicates very low likelihood of mass exploitation, and no active exploitation or public POC has been identified.
Use-after-free in Linux kernel XFRM IPTFS subsystem allows local authenticated attackers to trigger high-severity memory corruption through failed state cloning operations. The vulnerability stems from premature publication of mode_data pointer before allocation completion, enabling arbitrary code execution, privilege escalation, or denial of service when IPsec IP-TFS (IP Traffic Flow Security) mode cloning fails. Vendor patches available for kernel versions 6.18.21, 6.19.11, and 7.0. EPSS score of 0.02% (4th percentile) indicates very low observed exploitation probability despite CVSS 7.8 rating, likely due to the specific IPTFS configuration prerequisite and local access requirement.
A buffer validation flaw in Linux kernel's TDX guest driver (versions 6.7+) allows local authenticated attackers to leak kernel memory beyond allocated quote buffers into userspace, potentially crossing container isolation boundaries in multi-tenant TDX environments. The vulnerability stems from insufficient validation of host-controlled quote_buf->out_len values during remote attestation operations. Patches available for stable branches 6.12.80, 6.18.21, 6.19.11, and mainline 7.0. EPSS score of 0.02% (5th percentile) indicates low exploitation probability in the wild, with no public exploit code or active exploitation confirmed at time of analysis.
Use-after-free in Linux kernel virtio_net driver allows local authenticated attackers with low privileges to potentially achieve high confidentiality, integrity, and availability impact. The flaw triggers when virtio_net is configured with napi_tx=N (non-NAPI transmit mode) and the IFF_XMIT_DST_RELEASE flag is cleared by tc route filter rules. When a network namespace is destroyed while packets remain queued in the virtio transmit ring, the freed dst_ops structure is later dereferenced during packet cleanup, causing kernel memory corruption. Vendor patches are available across multiple stable kernel branches (5.10.253, 5.15.203, 6.1.168, 6.6.131, 6.12.80, 6.18.21, 6.19.11, 7.0). EPSS score of 0.02% (7th percentile) suggests low probability of mass exploitation, and no active exploitation or public POC has been identified at time of analysis.
Memory corruption in the Linux kernel VFIO PCI subsystem allows local authenticated users to trigger double-free conditions and potentially execute arbitrary code with kernel privileges. The vulnerability stems from an incorrect error-handling path in the dma-buf export feature that calls dma_buf_put() before dma_buf_export() succeeds, leading to unbalanced reference counts and memory corruption during file descriptor exhaustion scenarios. Exploitation probability remains very low (EPSS 0.02%, 5th percentile) with no public exploit code or evidence of active exploitation. Patches are available in stable kernel versions 6.19.11 and 7.0.
Deadlock in Linux kernel EROFS filesystem bio completion path enables remote denial of service. When EROFS decompress operations occur in process context (e.g., dm-verity scenarios), vm_map_ram() called with GFP_KERNEL can trigger memory swapping I/O under low memory conditions, causing submit_bio_wait() to deadlock when bio_list is already initialized. CVSS rates this 7.5 High with network attack vector requiring no authentication, yet EPSS scores only 0.02% (7th percentile), suggesting theoretical rather than observed exploitation. Patches available across multiple stable kernel branches (5.15.203, 6.1.168, 6.6.131, 6.12.80, 6.18.21, 6.19.11, 7.0). Not listed in CISA KEV and no public exploit identified at time of analysis.
Out-of-bounds memory access in Linux kernel's IBM Virtual Fibre Channel (ibmvfc) driver allows adjacent network attackers to leak kernel memory contents. A compromised or malicious VIO server can supply a crafted num_written value exceeding max_targets in discover targets MAD responses, causing unbounded indexing into disc_buf[] and embedding out-of-bounds kernel data in subsequent PLOGI and Implicit Logout MADs sent back to the attacker. Vendor patches available across all maintained kernel branches (5.10.253, 5.15.203, 6.1.168, 6.6.131, 6.12.80, 6.18.21, 6.19.11, 7.0). EPSS score of 0.02% (7th percentile) indicates low observed exploitation probability. No public exploit code or CISA KEV listing identified at time of analysis.
Use-after-free vulnerability in Linux kernel iomap subsystem allows memory corruption when filesystem block size differs from I/O granularity. The flaw occurs during buffered read operations when ctx->cur_folio is accessed after ownership transfers to the I/O helper, potentially leading to data corruption, information disclosure, or system crashes. Affects Linux kernel 6.19.x series. CVSS 9.8 critical severity, but EPSS exploitation probability is very low (0.02%, 5th percentile). Vendor patches available via mainline kernel commits. No active exploitation or public POC identified at time of analysis.
Use-after-free in Linux Kernel XFS filesystem allows local authenticated users to execute arbitrary code, escalate privileges, or cause system crashes during filesystem unmount operations. The vulnerability stems from a race condition where background reclaim and inodegc processes continue running while the Active Item List (AIL) is being flushed during unmount, enabling concurrent access to freed memory structures. Patches are available across multiple stable kernel versions (5.10.253, 5.15.203, 6.1.168, 6.6.131, 6.12.80, 6.18.21, 6.19.11, 7.0). EPSS score of 0.02% suggests very low probability of mass exploitation, and no active exploitation or public POC is identified at time of analysis.
Use-after-free in Linux Kernel XFS file system allows local authenticated users to execute arbitrary code, escalate privileges, or cause denial of service. The vulnerability affects XFS implementations from kernel 5.9 onward due to improper handling of Active Item List (AIL) pointers when performing buffer I/O in inode and quota push callbacks. With EPSS exploitation probability at 0.02% and no confirmed active exploitation, this represents a moderate real-world risk limited by local access requirements and low attack complexity. Patches are available across multiple stable kernel branches (5.10.253, 5.15.203, 6.1.168, 6.6.131, 6.12.80, 6.18.21, 6.19.11, and 7.0).
Use-after-free in Linux kernel's XFS filesystem allows local authenticated users to achieve arbitrary code execution, privilege escalation, or information disclosure. The vulnerability occurs in the XFS Active Item List (AIL) push mechanism where log items can be freed by background reclaim processes while still being dereferenced by tracepoints. Vendor patches are available for kernel versions 6.1.168, 6.6.131, 6.12.80, 6.18.21, 6.19.11, and 7.0. EPSS score of 0.02% (7th percentile) indicates very low observed exploitation probability in the wild, and no public exploit code or active exploitation (CISA KEV) has been identified at time of analysis.
Local privilege escalation in Linux Kernel ext4 filesystem allows authenticated users to trigger kernel crashes and potentially execute arbitrary code with high privileges. The vulnerability stems from improper handling of inline data conversion when truncate() operations exceed inline storage capacity in ext4 filesystems. Affected kernel versions include mainline through 7.0-rc3 and stable branches 5.10.x through 6.19.x, with vendor patches available across all active kernel series. EPSS exploitation probability is very low (0.02%, 7th percentile) and no public exploit identified at time of analysis, though CVSS 7.8 reflects high local impact if exploited.
Race condition in Linux kernel ext4 filesystem allows denial of service through kernel panic when fast commit feature processes incompletely initialized journal inodes. Affects Linux kernel versions from 3.11 through multiple stable branches (5.10.x, 5.15.x, 6.1.x, 6.6.x, 6.12.x, 6.18.x, 6.19.x) prior to patched versions released in early 2025. Vendor patches available across all affected stable branches. EPSS score of 0.02% (7th percentile) indicates low observed exploitation probability. Not listed in CISA KEV, and no public exploit code identified at time of analysis. CVSS 8.8 reflects authenticated network attack vector, though real-world risk limited to systems where attackers have filesystem write access and ext4 fast commit is enabled.
Buffer overflow in Linux kernel ext4 filesystem allows local attackers with user interaction to achieve arbitrary code execution via crafted extent tree metadata. The ext4_ext_correct_indexes() function fails to validate index pointer bounds when walking up the extent tree, enabling slab-out-of-bounds memory reads when processing malicious filesystem images. With CVSS 7.8 (high severity) but only 0.02% EPSS (5th percentile), this represents elevated theoretical risk with minimal observed real-world exploitation. Vendor patches available across multiple stable kernel branches (6.12.80, 6.18.21, 6.19.11, 7.0), and no public exploit code or active exploitation confirmed at time of analysis.
Denial of service in Linux kernel ext4 filesystem allows remote attackers to trigger infinite loops and system hangs (143+ second inode lock blocking) via crafted mkdir/mknod operations. The vulnerability stems from incomplete cleanup when extent insertion fails - ext4_ext_map_blocks() reclaims physical blocks without deleting stale extent tree entries, causing reuse of blocks already allocated to xattrs. This triggers infinite loops in ext4_xattr_block_set() that hold inode locks indefinitely. With CVSS 9.4 (AV:N/AC:L/PR:N/UI:N) but EPSS only 0.02% (percentile 7), the network attack vector rating appears inconsistent with typical local filesystem exploitation. Patches available across stable kernel branches 6.1.168, 6.6.131, 6.12.80, 6.18.21, 6.19.11, and mainline 7.0. No active exploitation confirmed (not in CISA KEV), but tagged for denial-of-service impact.
Linux kernel ext4 filesystem allows mounting of maliciously crafted filesystems with bigalloc and non-zero s_first_data_block, potentially triggering memory corruption or information disclosure. Affects all Linux kernel versions from 2.6.12 (commit 1da177e) through 7.0, with patches released in stable branches 5.10.253, 5.15.203, 6.1.168, 6.6.131, 6.12.80, 6.18.21, and 6.19.11. CVSS 7.8 indicates high severity with local access and user interaction required. EPSS score of 0.02% (7th percentile) suggests low probability of widespread exploitation, and no active exploitation confirmed (not in CISA KEV).
Use-after-free in Linux kernel ext4 filesystem allows local attackers to potentially execute arbitrary code or cause denial of service during unmount operations. The vulnerability stems from a race condition between ext4_put_super() teardown and update_super_work() error notification, where sysfs_notify() accesses a freed kernfs_node object after kobject_del() has released it. Fixed in stable kernel releases 5.15.203, 6.1.168, 6.6.131, 6.12.80, 6.18.21, 6.19.11, and mainline 7.0. EPSS score of 0.02% (7th percentile) suggests low probability of exploitation in the wild, though CVSS vector indicates straightforward local exploitation requiring user interaction.
Use-after-free and NULL pointer dereference vulnerabilities in Linux kernel's ksmbd SMB server allow remote unauthenticated attackers to achieve arbitrary code execution, information disclosure, or denial of service. The flaws occur during oplock (opportunistic lock) publication when error handling frees memory still referenced by concurrent readers, and when global lease lists are accessed before critical pointers are initialized. With CVSS 9.8 (AV:N/AC:L/PR:N/UI:N), this represents a critical remote attack surface, though EPSS score of 0.02% (5th percentile) suggests minimal observed exploitation activity. Vendor patches are available across affected kernel versions 6.6.130-6.19.9.
Use-after-free in Linux kernel idxd DMA engine driver allows local authenticated attackers to execute arbitrary code, disclose sensitive memory, or crash the system when Function Level Reset operations fail to allocate scratch memory. The vulnerability affects Linux kernels from commit 98d187a98903 through versions 6.14, 6.18.x before 6.18.21, and 6.19.x before 6.19.11. Vendor patches are available across stable branches with EPSS indicating 0.02% exploitation probability (4th percentile), suggesting limited active targeting despite the high CVSS 7.8 score. No CISA KEV listing or public exploit code identified at time of analysis.
Use-after-free and descriptor management error in Linux kernel's Intel IDXD DMA engine driver allows NULL pointer dereferences, double completion, or descriptor leaks. The llist_abort_desc() function completes the wrong descriptor object due to a loop cursor bug introduced in commit aa8d18becc0c. Patches released for kernel 6.12.80, 6.18.21, 6.19.11, and 7.0. EPSS exploitation probability is very low (0.02%, 5th percentile), and no active exploitation or public exploit code identified. Despite CVSS 9.8 critical rating with network vector, the actual attack surface requires local access to DMA engine subsystems, making the CVSS vector likely inaccurate or context-dependent.
Read retry logic in the Linux kernel's netfs subsystem can incorrectly abandon all remaining subrequests due to an uninitialized or invalid pointer, potentially exposing unintended memory contents or causing denial of service through kernel crashes. Affects Linux kernel 6.12 through early 6.19 and 7.0 development branches. Vendor patches available for 6.18.21, 6.19.11, and mainline 7.0. EPSS score of 0.02% (4th percentile) indicates low real-world exploitation probability. Not listed in CISA KEV. CVSS 8.8 reflects network attack vector with user interaction required.
Out-of-bounds write in Linux kernel ksmbd allows authenticated remote attackers to cause memory corruption via crafted SMB2 compound requests combining QUERY_DIRECTORY and QUERY_INFO commands. The vulnerability arises when get_file_all_info() fails to validate OutputBufferLength against available buffer space before converting filenames to UTF-16, enabling buffer overflow beyond response buffer boundaries. With CVSS 8.8 (High) and network attack vector requiring only low privileges, this presents significant risk to systems running ksmbd SMB server. Vendor patches available across multiple kernel versions (5.15.203, 6.1.168, 6.6.131, 6.12.80, 6.18.21, 6.19.11, 7.0). EPSS exploitation probability remains low at 0.01% (2nd percentile), and no public exploit or CISA KEV listing identified at time of analysis.
Out-of-bounds write in Linux kernel's ksmbd server allows authenticated remote attackers with low-privilege SMB access to corrupt memory and potentially execute arbitrary code or crash the system. The vulnerability triggers when processing compound SMB2 requests (e.g., READ + QUERY_INFO for security descriptors) where the first command consumes most of the response buffer, causing ksmbd to write beyond allocated memory when building security descriptors from POSIX ACLs. Vendor patches are available for kernel versions 6.12.81, 6.18.22, 6.19.12, and 7.0. EPSS score of 0.01% suggests low observed exploitation probability, and no public exploit code or active exploitation has been identified at time of analysis.
Memory corruption in Linux kernel's algif_aead cryptographic interface allows local authenticated users to achieve arbitrary kernel memory read/write, leading to privilege escalation to root. The vulnerability stems from improper handling of in-place operations introduced in commit 72548b093ee3, affecting kernel versions from 4.14 through 6.19.x. Multiple public exploit codes exist including proof-of-concept demonstrations from security researchers, with EPSS score of 0.01% indicating currently low widespread exploitation likelihood despite POC availability.
Out-of-bounds read in the Linux kernel's X.509 certificate parser allows local unprivileged users to trigger memory corruption or denial of service by submitting a specially crafted certificate via the keyrings(7) API. The flaw exists in the handling of empty Basic Constraints or Key Usage extensions, where the first byte is dereferenced before the length check. A proof-of-concept was responsibly disclosed by the reporter, though no public exploit is identified at time of analysis and EPSS rates the exploitation probability as very low (0.01%).
Use-after-free in Linux kernel ACPI EC driver allows local authenticated attackers with low privileges to achieve high integrity, confidentiality, and availability impact on reduced-hardware platforms when GPIO IRQ provider defers probing. Vendor patches are available across stable branches (6.1.168, 6.6.131, 6.12.80, 6.18.21, 6.19.11, 7.0). EPSS score of 0.02% (7th percentile) indicates very low observed exploitation probability, and no active exploitation is confirmed (not in CISA KEV). The vulnerability triggers when EC handler cleanup fails during probe deferral, leaving a dangling pointer that is later dereferenced during AML evaluation of EC OpRegion accesses (battery, thermal, backlight operations).
Use-after-free in Linux kernel bonding driver allows local authenticated attackers with low privileges to trigger memory corruption via race condition during concurrent slave device operations. The vulnerability (CVSS 7.8, EPSS 0.02%) affects the bond_xmit_broadcast() function where concurrent slave enslave/release operations can mutate the slave list during RCU-protected iteration, causing the original skb to be double-consumed and double-freed. Vendor patches are available for kernel versions 6.18.22, 6.19.12, and 7.0. No public exploit or active exploitation confirmed at time of analysis.
Integer overflow in Linux kernel X.25 protocol stack allows remote unauthenticated attackers to trigger denial of service via fragmented packet accumulation. The fraglen field in x25_sock structure can overflow when processing fragmented X.25 packets, causing kernel crashes or resource exhaustion. Vendor-released patches confirm the vulnerability exists since initial Git history (2005) through kernel 6.19.x. EPSS score of 0.02% suggests low observed exploitation activity, though the network-accessible attack vector (AV:N) and lack of authentication requirements (PR:N) make this exploitable against any exposed X.25 network interface. No active exploitation confirmed (not in CISA KEV), but public patches reveal implementation details that could facilitate exploit development.
Use-after-free or race condition in Linux kernel netfilter connection tracking can lead to remote code execution, privilege escalation, or memory corruption. The vulnerability affects the nf_conntrack_expect module where unsafe access to helper names occurs without holding a reference to the master conntrack structure. Despite a critical CVSS score of 9.8 (network-accessible, no authentication required), EPSS exploitation probability is very low (0.02%, 7th percentile), and no active exploitation or public POC has been identified. Vendor patches are available for kernel versions 6.1.168, 6.6.134, 6.12.81, 6.18.22, 6.19.12, and 7.0.
A logic error in the Linux kernel's BPF (Berkeley Packet Filter) verifier allows local attackers with low privileges to exploit verifier/runtime divergence and achieve out-of-bounds map access, enabling arbitrary memory read/write and privilege escalation. The flaw affects the maybe_fork_scalars() function which incorrectly handles BPF_OR operations during state forking, tracking destination register as 0 when the runtime value is K (the constant operand). Patches are available from kernel.org for versions 6.12.80, 6.18.21, 6.19.11, and 7.0-rc5. EPSS score is extremely low (0.01%) and no public exploit or active exploitation has been identified at time of analysis.
Session hijacking in Linux kernel ksmbd SMB server allows authenticated network attackers to escalate privileges and access arbitrary sessions via failed multichannel binding requests. When SMB2_SESSION_SETUP with SMB2_SESSION_REQ_FLAG_BINDING fails, ksmbd incorrectly leaves the connection in a binding state, causing all subsequent session lookups to fall back to the global sessions table instead of connection-specific sessions. This enables attackers to access sessions across different connections, potentially leading to unauthorized data access and privilege escalation. Exploitation probability is extremely low (EPSS 0.01%, 1st percentile) with no public exploits or CISA KEV listing. Patches available for kernel versions 6.1.167, 6.6.130, 6.12.78, 6.18.20, 6.19.10, and mainline 7.0-rc5.
Use-after-free in Linux kernel Bluetooth SCO subsystem allows adjacent network attackers to achieve arbitrary code execution with high confidentiality, integrity, and availability impact. The vulnerability exists in sco_recv_frame() which releases a lock on conn->sk without holding a socket reference, creating a race condition where concurrent close() operations can free the socket before subsequent access. Vendor patches available across multiple stable kernel versions (6.6.131, 6.12.80, 6.18.21, 6.19.11, 7.0-rc6). EPSS score of 0.01% suggests minimal observed exploitation probability despite high CVSS 8.8 rating. No CISA KEV listing or public exploit identified at time of analysis.
Local out-of-bounds memory access in the Linux kernel netfilter connection-tracking (conntrack) subsystem allows a low-privileged user holding CAP_NET_ADMIN to read kernel slab memory well beyond object bounds. The flaw stems from ctnetlink and SCTP conntrack code trusting user-supplied netlink attributes without range validation, so a crafted CTA_PROTOINFO_SCTP_STATE value or an expectation with exp->dir=100 causes reads far past a 320-byte nf_conn object (confirmed via UBSAN by the reporter). No public exploit has been identified and EPSS is negligible (0.01%), but the bug is a confirmed, patched memory-safety defect suitable for kernel information disclosure or denial of service.
Local privilege-relevant memory corruption in the Linux kernel's IPsec (xfrm) NAT-keepalive subsystem arises from a use-after-free race during network namespace teardown, affecting kernels from 6.11 onward. When a netns is destroyed, xfrm_nat_keepalive_net_fini() cancels the keepalive work, but the subsequent state flush re-schedules nat_keepalive_work, which can then run against an already-freed net structure. This carries a CVSS 7.8 (local) rating; EPSS is negligible at 0.01% and it is not in CISA KEV, so no public exploit identified at time of analysis.
Out-of-bounds function-pointer read in the Linux kernel's DVB network (dvb-net) ULE decapsulation code allows a crafted MPEG-TS/ULE stream to index past the 255-element ule_mandatory_ext_handlers[]/ule_optional_ext_handlers[] tables when the extension header type equals 255, potentially invoking an arbitrary value as a function pointer. Affected systems are those using DVB adapters with the dvb-net ULE (Unidirectional Lightweight Encapsulation) path; the flaw is triggered by attacker-influenced network/broadcast data. No public exploit identified at time of analysis, EPSS is very low (0.01%), and the issue is not in CISA KEV, but the theoretical impact is control-flow hijack.
NULL pointer dereference in Linux kernel NFSD export cache cleanup allows local denial of service when RCU readers in e_show() and c_show() concurrently access export path and client name objects while cache_clean removes entries and drops the last reference prematurely. The vulnerability stems from path_put() and auth_domain_put() executing before the RCU grace period completes, freeing sub-objects still in use by readers. A fix has been merged upstream that defers these cleanup operations to a dedicated workqueue after the RCU grace period, ensuring safe resource release in process context where sleeping is permitted.
Use-after-free in Linux kernel NFSD /proc/fs/nfs/exports proc entry allows information disclosure when a network namespace is destroyed while an exports file descriptor remains open. The vulnerability occurs because exports_proc_open() captures a network namespace reference without holding a refcount, enabling nfsd_net_exit() to free the export cache while the fd is still active, leading to subsequent reads dereferencing freed memory. The fix holds a struct net reference for the lifetime of the
Heap overflow in Linux kernel NFSv4.0 LOCK replay cache allows unauthenticated remote attackers to corrupt kernel memory by triggering a denial-of-service or potential code execution. The vulnerability exists in nfsd4_encode_operation() which copies encoded LOCK responses up to 1024 bytes into a fixed 112-byte inline buffer without bounds checking, resulting in up to 944 bytes of slab-out-of-bounds writes. Exploitation requires two cooperating NFSv4.0 clients but no special privileges; upstream fixes are available across multiple stable kernel branches.
Buffer overflow in Linux kernel HID-BPF subsystem allows arbitrary return values from dispatch_hid_bpf_raw_requests() to overflow the hid_hw_request buffer without validation. The vulnerability affects all Linux kernel versions with HID-BPF support; attackers with the ability to load or influence BPF programs targeting HID devices can trigger memory corruption. No CVSS score, EPSS data, or confirmed active exploitation has been assigned at time of analysis.
Use-after-free in the Linux kernel's nvdimm/bus subsystem allows local privileged users to potentially trigger memory corruption when device_add() fails during nd_async_device_register() asynchronous initialization. The flaw stems from the parent device reference being dropped before the parent pointer is accessed on allocation failure paths. No public exploit identified at time of analysis, and EPSS exploitation probability is very low at 0.02%.
Linux kernel mm/rmap subsystem fails to correctly preserve page table entry attributes (writable and soft-dirty bits) when batching unmap operations on lazyfree folios, causing kernel panic via page table check violation when a large folio with mixed writable/non-writable PTEs is unmapped across multiple processes. The vulnerability affects all Linux kernel versions with the vulnerable folio_unmap_pte_batch() code path and can be triggered by local attackers through a specific sequence of memory management syscalls (MADV_DONTFORK, fork(), MADV_DOFORK, MADV_FREE, and memory reclaim), resulting in denial of service via kernel crash.
Linux kernel memory management allows installation of PMD entries pointing to non-existent physical memory or causes NULL pointer dereferences in move_pages_huge_pmd() when handling huge zero page migrations via UFFDIO_MOVE. The vulnerability occurs because the function incorrectly handles NULL folio pointers for huge zero pages, either producing bogus page frame numbers on SPARSEMEM_VMEMMAP systems or dereferencing NULL on other memory models. Additionally, destination PMD entries lose special mapping metadata (pmd_special flag), causing subsequent page reference counting corruption. No CVSS score is available; no active exploitation reported.
Local privilege escalation and kernel memory corruption in the Linux kernel's HackRF Software-Defined Radio media (V4L2) driver arises from a use-after-free and double-free in the hackrf_probe() error path. When probe fails after v4l2_device_register() has already exposed the device node, the driver frees the hackrf_dev structure directly with kfree() while an already-open file descriptor still holds a reference, so subsequent ioctl() or close() calls dereference and re-free freed memory. There is no public exploit identified at time of analysis; EPSS is 0.02% (5th percentile) and it is not listed in CISA KEV.
Out-of-bounds heap write in Linux kernel CAN gateway CRC8 checksum processing allows adjacent network attackers to corrupt kernel memory and potentially achieve code execution. The cgw_csum_crc8_rel() function in the CAN gateway subsystem uses raw negative index values instead of bounds-checked variables when accessing canfd_frame data, enabling writes up to 56 bytes before the heap object. Exploitation requires CAP_NET_ADMIN capability to configure CAN gateway CRC8 checksums. EPSS exploitation probability is very low (0.02%, 7th percentile) and no active exploitation has been reported. Vendor patches available across multiple kernel versions (5.10.253, 5.15.203, 6.1.168, 6.6.131, 6.12.80, 6.18.21, 6.19.11, 7.0).
Out-of-bounds memory access in Linux Kernel's KVM subsystem for LoongArch architecture allows local authenticated attackers with low privileges to read limited kernel memory and cause system crashes. The vulnerability stems from improper handling of empty EIOINTC coremap values in eiointc_update_sw_coremap(), resulting in invalid array indexing into kvm_arch::phyid_map::phys_map[]. While CVSS rates this 7.3 HIGH, the EPSS score of 0.02% (4th percentile) indicates minimal real-world exploitation activity. No active exploitation (not in CISA KEV) or public POC has been identified. Vendor patches are available across multiple stable kernel branches (6.18.21, 6.19.11, 7.0, and mainline).
Denial of service in the Linux kernel's s390 (IBM Z) secure-execution memory subsystem allows storage donated to the Ultravisor to trigger unresolvable secure-storage-access exception loops. Because donated pages lack the PG_arch_1 bit, the prior fixup path (arch_make_folio_accessible()) returned immediately without exporting the page, causing the fault to repeat indefinitely. No public exploit identified at time of analysis; EPSS is negligible (0.02%, 4th percentile) and exploitation is confined to s390 Protected Virtualization guests.
Use-after-free in Linux kernel AMD GPU driver allows local authenticated users to potentially execute arbitrary code, escalate privileges, or cause denial of service. The amdgpu_amdkfd_submit_ib() function in the AMD KFD (Kernel Fusion Driver) prematurely releases a DMA fence reference before waiting on it, creating a race condition where the fence memory may be freed before use. Vendor-released patches are available for multiple stable kernel branches (6.1.168, 6.6.131, 6.12.80, 6.18.21, 6.19.11, 7.0). EPSS exploitation probability is very low at 0.02% (7th percentile), and no public exploit or active exploitation has been identified at time of analysis.
Memory management flaw in Linux kernel's Cadence macb network driver causes kernel warning and potential denial of service. Specifically affects the macb Ethernet driver on ARM64 ZynqMP platforms (kernel versions 6.1+ containing commit 6bc8a5098bf4). The vulnerability stems from calling napi_consume_skb() with IRQs disabled during TX packet cleanup, violating kernel API contracts and potentially causing system instability under network load. EPSS exploitation probability is very low (0.02%, 7th percentile) with vendor-released patches available across all stable kernel branches (6.1.168, 6.6.131, 6.12.80, 6.18.21, 6.19.11, 7.0). No active exploitation or public exploit code identified at time of analysis.
Out-of-bounds array access in Linux kernel KVM subsystem on LoongArch allows local authenticated attackers with low privileges to execute arbitrary code, escalate privileges, or cause denial of service by passing negative cpuid values to kvm_get_vcpu_by_cpuid(). The function lacks bounds checking before indexing phyid_map::phys_map[], enabling read/write beyond array boundaries with container escape potential (CVSS scope change). Vendor patches available across multiple stable kernel branches (6.12.80, 6.18.21, 6.19.11). EPSS score of 0.02% indicates low automated exploitation likelihood, with no confirmed active exploitation or public POC at time of analysis.
A workqueue deadlock in Linux kernel NVMe-over-Fabrics target (nvmet) allows remote denial of service via recursive locking during controller disconnect. The nvmet subsystem's async event handler can trigger reentrant workqueue completion when nvmet_ctrl_free() flushes work on the same queue (nvmet-wq) that invoked it, causing a lockdep-detected recursive lock scenario. EPSS score of 0.02% indicates very low probability of exploitation in the wild. Patches available for kernel versions 6.12.80, 6.18.21, 6.19.11, and mainline 7.0 via upstream commits.
Use-after-free in Linux kernel futex subsystem allows local authenticated attackers to achieve code execution, privilege escalation, or denial of service via sys_futex_requeue() with mismatched flags. Discovered through automated LLM analysis by Nicholas, this affects kernel versions 6.7 through 6.19.x, with patches available in 6.12.80, 6.18.21, 6.19.11, and 7.0. EPSS score of 0.02% (5th percentile) indicates low observed exploitation probability, and no active exploitation or public POC has been identified. The vulnerability requires local access with low-privilege authenticated user credentials (PR:L), making it a post-compromise escalation vector rather than a remote entry point.
Address calculation error in Linux kernel KVM on ARM64 allows local authenticated attackers with low privileges to corrupt memory descriptors, potentially enabling container escape or privilege escalation to compromise host integrity and confidentiality. The vulnerability affects KVM's stage-1/stage-2 page table descriptor swapping logic where pointer arithmetic incorrectly multiplies the offset by 8, causing writes to unintended memory locations. Vendor patches available for Linux 6.19.11 and mainline with EPSS exploitation probability at 5th percentile, indicating low observed exploitation despite high CVSS severity.
Denial of service via CPU soft lockup in Linux kernel's wlcore Wi-Fi driver (versions 5.10 through 7.0) occurs when memory allocation fails during wireless frame transmission. Incorrect error code return (-EAGAIN instead of -ENOMEM) triggers infinite retry loop while holding critical mutex, causing system unresponsiveness. Vendor-released patches available across all affected stable kernel branches (5.10.253, 5.15.203, 6.1.167, 6.6.130, 6.12.78, 6.18.20, 6.19.10, 7.0). CVSS 7.5 (High) reflects network attack vector with no authentication required, though EPSS score of 0.02% (7th percentile) indicates low observed exploitation probability. No active exploitation confirmed (not in CISA KEV); no public exploit identified at time of analysis.
Use-after-free race condition in Linux kernel Wi-Fi cfg80211 subsystem allows local authenticated users to trigger kernel crashes or potentially execute code. When a nl80211 socket closes while a peer measurement (PMSR) request is active, concurrent interface teardown can leave a scheduled work item (pmsr_free_wk) that later invokes the driver's abort callback on already-freed interface structures. EPSS score of 0.02% (7th percentile) indicates very low probability of exploitation in the wild. Patches available across all supported kernel branches since commit 9bb7e0f24e7e (introduced in Linux 5.0), with fixes released in stable versions 6.1.167, 6.6.130, 6.12.78, 6.18.20, and 6.19.10.
Use-after-free in Linux kernel tracing subsystem allows local authenticated attackers to achieve arbitrary code execution, privilege escalation, or denial of service. The vulnerability occurs when deleting tracing instances with copy_trace_marker enabled, where improper RCU synchronization leaves freed memory accessible. Exploitation requires local access with low privileges to manipulate kernel tracing facilities. EPSS score of 0.02% (4th percentile) indicates low observed exploitation probability. Vendor patches available across multiple stable kernel versions (6.18.20, 6.19.10, 7.0).
Race condition in Linux kernel SMB Direct receive credit management allows remote denial of service against SMB3 network storage services. The flaw enables remote unauthenticated attackers to exhaust receive buffer credits through timing exploitation of the gap between hardware packet reception and completion processing, causing service disruption. EPSS exploitation probability is low (0.02%, 4th percentile), and patches are available from kernel.org for versions 6.18.x, 6.19.x, and 7.0. This affects only systems using SMB Direct (RDMA-enabled SMB3), not standard SMB implementations.
Denial of service in Linux kernel SMB server (ksmbd) affects versions 6.18 through 7.0-rc via race condition in SMBDirect receive credit management. Remote unauthenticated attackers can trigger resource exhaustion through crafted SMB packets exploiting the window between hardware reception and completion processing. Vendor patches released for stable branches 6.18.11, 6.19.1, and mainline 7.0. Low EPSS score (0.02%) indicates limited exploitation interest despite network attack vector and no authentication requirement.
Use-after-free in Linux kernel SMB server (ksmbd) RDMA handling allows remote unauthenticated attackers to execute arbitrary code, escalate privileges, or crash the system via crafted SMB Direct connections. The vulnerability arises when batched RDMA send operations without IB_SEND_SIGNALED flags are prematurely freed during connection failures, causing memory corruption. Vendor patches are available for kernel versions 6.18.11, 6.19.1, and 7.0. EPSS score of 0.02% suggests low observed exploitation probability, and no active exploitation or public POC is confirmed at time of analysis, though the critical CVSS score (9.8) reflects severe potential impact if the SMB Direct feature is enabled.
Out-of-bounds read and write in OP-TEE OS PKCS#11 Trusted Application (versions 3.13.0-4.10.0) allows authenticated local attackers with low privileges to read up to 7 bytes beyond heap boundaries and write arbitrary attribute values outside allocated buffers, potentially compromising the integrity and confidentiality of the Trusted Execution Environment. The vulnerability affects Arm TrustZone-based TEE implementations running alongside Linux kernels on Cortex-A cores. Patches available in three upstream commits targeting version 4.11.0. EPSS data not provided; no CISA KEV status indicating targeted rather than widespread exploitation. CVSS 8.7 reflects high confidentiality/integrity impact with scope change, representing potential TEE compromise from the normal world.
Use-after-free in the Linux kernel's kernel TLS (net/tls) data path lets a local attacker corrupt kernel memory by racing the -EBUSY crypto-backlog error path of tls_do_encryption(). When crypto_aead_encrypt() returns -EBUSY, both the async tls_encrypt_done() callback and the synchronous error path clean up encrypt_pending and the scatterlist, double-decrementing a sentinel so a later sendmsg frees an in-flight tls_rec while a cryptd callback is still pending. Despite an NVD CVSS of 9.8, EPSS is 0.01% and there is no public exploit identified at time of analysis, reflecting the narrow race conditions required.
Use-after-free in Linux kernel CAN raw socket implementation allows local authenticated attackers to corrupt memory and potentially achieve code execution. The vulnerability stems from premature deallocation of percpu uniq storage in raw_release() while raw_rcv() may still access it via deferred RCU callbacks. Patches available for kernel versions 6.12.83, 6.18.24, 6.19.14, and 7.0.1. EPSS exploitation probability remains low (0.02%, 5th percentile) with no active exploitation confirmed at time of analysis.
Use-after-free in Linux kernel CXL (Compute Express Link) subsystem allows local authenticated attackers to corrupt memory and potentially execute arbitrary code or cause kernel panics. The flaw occurs in cxl_detach_ep() during device removal when parent port references are freed prematurely, before child operations complete. Affects Linux kernel 6.3 through 7.0-rc5; patched in versions 6.12.80, 6.18.21, 6.19.11, and 7.0. EPSS score of 0.02% indicates low exploitation probability. No active exploitation or public exploit code identified at time of analysis.
Out-of-bounds memory access in Linux kernel perf subsystem allows local authenticated attackers with low privileges to achieve high confidentiality, integrity, and availability impact. The vulnerability occurs when group_sched_in() fails during performance monitoring event handling and event inheritance uses the wrong PMU (Performance Monitoring Unit) context, leading to improper rollback and memory corruption. Despite high CVSS score (7.8), EPSS probability indicates very low real-world exploitation likelihood (0.02%, 5th percentile). Vendor patches available across multiple stable kernel branches (6.6.131, 6.12.80, 6.18.21, 6.19.11, 7.0) per git.kernel.org commit references.
Use-after-free in Linux Kernel platform driver core allows local authenticated attackers to achieve high-severity impacts including code execution, privilege escalation, or denial of service. The vulnerability stems from unsafe access to the driver_override field during device probing when the bus match() callback executes without device lock protection. Patches are available across multiple kernel branches (6.12.80, 6.18.21, 6.19.11, 7.0) per vendor commits. EPSS score of 0.02% (5th percentile) indicates low observed exploitation probability, and no CISA KEV listing exists, suggesting this remains a theoretical risk rather than actively exploited threat despite the high CVSS 7.8 score.
Signed integer overflow in the Linux kernel's BPF interpreter enables local attackers with low privileges to achieve out-of-bounds memory access and potentially execute arbitrary code. The flaw occurs when the 32-bit signed division/modulo operations handle INT_MIN (0x80000000), causing the abs() macro to trigger undefined behavior that creates a mismatch between the verifier's abstract interpretation and the interpreter's runtime behavior. With an EPSS score of 0.02% and no confirmed active exploitation, the primary risk is to systems where unprivileged users can load BPF programs, though default kernel configurations typically restrict BPF to privileged users. Patches are available across multiple stable kernel branches (6.6.131, 6.12.80, 6.18.21, 6.19.11).
Use-after-free in Linux kernel XFRM subsystem allows local authenticated attackers to achieve arbitrary code execution with high privileges. The vulnerability arises when XFRM policy hash threshold work items (policy_hthresh.work) outlive network namespace teardown, dereferencing freed struct net memory in xfrm_hash_rebuild(). Vendor patches available across multiple stable kernel versions (6.12.80, 6.18.21, 6.19.11, 7.0) confirm the issue affects kernels since commit 880a6fab8f6b. EPSS score of 0.02% (5th percentile) indicates low observed exploitation probability despite CVSS:3.1 score of 7.8; no CISA KEV listing or public POC identified at time of analysis.
Buffer over-read in Linux kernel Bluetooth L2CAP allows adjacent network attackers to disclose sensitive kernel memory and crash systems via malformed Enhanced Credit Based Connection Requests. Affects multiple stable kernel versions (6.12.x, 6.18.x, 6.19.x). Vendor patches available for all affected branches. EPSS score of 0.02% indicates low observed exploitation probability despite the network-adjacent attack vector and lack of required authentication. No public exploit identified at time of analysis.
Use-after-free in Linux kernel Bluetooth MGMT subsystem allows local authenticated users to achieve arbitrary code execution, privilege escalation, or denial of service. The vulnerability stems from improper condition checking in mgmt_add_adv_patterns_monitor_complete(), which can leave dangling pointers after freeing memory without unlinking from the list. Patches available across multiple kernel versions (6.12.80, 6.17, 6.18.21, 6.19.11, 7.0). No evidence of active exploitation (not in CISA KEV), low EPSS score (0.02%, 5th percentile) suggests limited attacker interest despite high CVSS severity.
Use-after-free in Linux kernel Open vSwitch module causes system crash when deleting network interfaces on PREEMPT_RT kernels. The vulnerability is confirmed patched in multiple stable kernel versions (5.10.253, 5.15.203, 6.1.168, 6.6.131, 6.12.80, 6.18.21, 6.19.11, 7.0) with upstream fixes available via kernel.org commits. EPSS score of 0.02% (7th percentile) indicates very low exploitation likelihood. No active exploitation confirmed (not in CISA KEV). Local authenticated access required (CVSS AV:L/PR:L) with high impact (CVSS 7.8), but exploitation depends on PREEMPT_RT kernel configuration and specific Open vSwitch teardown race conditions.
Double-free vulnerability in Linux kernel SMC (Shared Memory Communications) splice handling allows local authenticated attackers to trigger use-after-free conditions and kernel panic. The flaw occurs when tee(2) duplicates an SMC pipe buffer: both the original and cloned pipe_buffer share the same smc_spd_priv pointer, causing smc_rx_pipe_buf_release() to free the same memory twice on pipe cleanup. This escalates from KASAN-detected slab-use-after-free to NULL pointer dereference in smc_rx_update_consumer(), resulting in denial of service via kernel crash. Vendor patches available across multiple stable kernel branches (5.10.253, 5.15.203, 6.1.168, 6.6.131, 6.12.80, 6.18.21, 6.19.11, 7.0). EPSS exploitation probability is low (0.02%, 7th percentile) with no public exploit or CISA KEV listing at time of analysis.
Double-free memory corruption in Linux kernel bcmasp network driver allows local authenticated attackers with low privileges to achieve arbitrary code execution, privilege escalation, or system crash. The vulnerability affects kernel versions 6.6 through early 7.0 release candidates. Vendor patches available across stable branches (6.12.80, 6.18.21, 6.19.11, 7.0). EPSS score of 0.02% (5th percentile) indicates very low real-world exploitation probability, and no active exploitation or public POC has been identified. This represents a low-priority issue for most environments despite the 7.8 CVSS score, as it requires local authenticated access and affects only systems using the specific bcmasp Broadcom network driver.
Out-of-bounds memory write in Linux kernel iavf (Intel Adaptive Virtual Function) driver allows local authenticated attackers with low privileges to achieve high confidentiality, integrity, and availability impact via race condition during concurrent ethtool operations. The vulnerability stems from inconsistent use of queue counters (real_num_tx_queues vs num_active_queues vs num_tx_queues) across ethtool statistics functions, enabling memory corruption when changing network channels via 'ethtool -L' while simultaneously querying statistics with 'ethtool -S'. Patches available for kernel versions 6.12.80, 6.18.21, 6.19.11, and 7.0. EPSS exploitation probability is low (0.02%, 5th percentile) with no public exploit or active exploitation identified at time of analysis.
Use-after-free in Linux kernel packet socket handling allows local attackers with low privileges to achieve kernel memory corruption, potentially leading to privilege escalation, information disclosure, or denial of service. The vulnerability stems from a race condition in packet_release() where NETDEV_UP events can re-register a socket into a fanout group's array after cleanup begins but before the socket number is zeroed, leaving dangling pointers. Patches are available across multiple stable kernel versions (5.10.253, 5.15.203, 6.1.168, 6.6.131, 6.12.80, 6.18.21, 6.19.11, 7.0). EPSS score is low (0.02%, 7th percentile) and no active exploitation is confirmed (not in CISA KEV), suggesting limited real-world exploitation despite high CVSS 7.8 rating.
Type confusion in Linux kernel team driver allows local authenticated users to trigger memory corruption and potential privilege escalation. The team_setup_by_port() function incorrectly copies header_ops from non-Ethernet lower devices (such as GRE interfaces) without proper context validation, causing callbacks like dev_hard_header() to interpret netdev_priv() as the wrong structure type when processing stacked network topologies (e.g., gre → bond → team). While CVSS rates this 7.8 (High), EPSS probability is very low at 0.02% (5th percentile), and no active exploitation or public POC has been identified. Vendor patches are available across multiple stable kernel branches (6.12.80, 6.18.21, 6.19.11, 7.0).
Use-after-free in Linux kernel ICSSG PRU Ethernet driver allows remote code execution with CVSS 9.8 scoring. Affects TI ICSSG network driver in kernels 6.15 through 7.0 (patched in 6.19.11 and 7.0). The flaw causes CPPI descriptors to be freed before timestamp processing completes on every received packet, creating a exploitable memory corruption condition. Despite critical CVSS scoring, EPSS probability is very low (0.02%, 5th percentile) and no active exploitation or public POC has been identified. The network attack vector (AV:N) combined with zero-day timing suggests this may be scored for worst-case remote exploitation scenario, but actual exploitability via network packets requires deeper investigation of ICSSG hardware context and packet processing pipeline.
Use-after-free in Linux kernel Bluetooth Intel driver enables local privilege escalation to kernel code execution. Affects Linux kernel 4.3 through 7.0-rc5, with patches available in versions 6.6.131, 6.12.80, 6.18.21, 6.19.11, and 7.0. Exploitation requires local authenticated access with low privileges (CVSS PR:L). EPSS score of 0.02% (5th percentile) indicates low probability of widespread exploitation. No public exploit code or active exploitation confirmed at time of analysis, though technical details in CVE description provide implementation roadmap.
Out-of-bounds write in the Linux kernel macb Ethernet driver allows local authenticated users with low privileges to corrupt kernel memory, potentially leading to privilege escalation, denial of service, or information disclosure. The vulnerability affects the ethtool statistics collection path where gem_get_ethtool_stats() writes statistics for MACB_MAX_QUEUES regardless of the actual number of active queues, causing a 760-byte buffer overflow when fewer queues are configured. KASAN validation confirms heap corruption with a write beyond allocated vmalloc region boundaries. No active exploitation confirmed (not in CISA KEV), and EPSS score is low (0.03%, 10th percentile), indicating minimal observed exploitation activity. Patches available across multiple stable kernel branches (5.10.253, 5.15.203, 6.1.168, 6.6.131, 6.12.80, 6.18.21, 6.19.11, 7.0).
Use-after-free in Linux kernel RDMA/EFA driver allows local authenticated users with low privileges to execute arbitrary code with high confidentiality, integrity, and availability impact. The vulnerability affects the admin queue completion handling where completion context data is accessed after being freed, creating a window for memory corruption exploitation. Affects kernel versions from 5.12 through 7.0-rc7, with vendor patches available for stable branches 6.18.21, 6.19.11, and 7.0. EPSS score of 0.02% (4th percentile) indicates low observed exploitation probability, and no public exploit code or CISA KEV listing identified at time of analysis.
Use-after-free in Linux kernel's xe GPU driver allows local authenticated users to execute arbitrary code with kernel privileges. The vulnerability occurs in the SR-IOV physical function migration restore path when error handling fails to nullify a freed data pointer, enabling subsequent write operations to reference deallocated memory. With CVSS 7.8 (High) and very low EPSS (0.02%), this represents typical kernel memory corruption risk requiring local access and low privileges. Vendor patches are available for affected 6.19 and 7.0-rc versions.
Use-after-free in Linux kernel meson-spicc SPI driver allows local authenticated attackers to escalate privileges or crash the system. The vulnerability stems from a double-put reference counting error during driver removal - devm_spi_register_controller() already handles cleanup automatically, but meson_spicc_remove() explicitly calls spi_controller_put() again, releasing the same memory twice. EPSS probability is low (0.02%, 5th percentile), no active exploitation confirmed, and vendor patches are available across multiple kernel versions (6.12.80, 6.18.21, 6.19.11, 7.0). This targets systems using Amlogic Meson SoC SPI controllers, requiring local authenticated access to exploit.
Use-after-free in Linux kernel AMD display driver allows local authenticated users to execute arbitrary code, corrupt memory, or cause denial of service. Affects systems with AMD graphics using Display Stream Compression (DSC) and multi-stream transport (MST), particularly laptops with integrated displays and external DP-MST monitors. The vulnerability arises when mode changes occur simultaneously with DSC reconfigurations, causing improper stream lifecycle management. Vendor patch available across multiple kernel versions (6.12.80, 6.18.21, 6.19.11, 7.0). EPSS score of 0.02% indicates low exploitation probability in the wild, with no CISA KEV listing or public exploit identified at time of analysis.
Improper locking in the Linux kernel's PMBus hardware monitoring core (drivers/hwmon/pmbus) allows a local low-privileged attacker to trigger a race condition against unserialized regulator voltage operations, corrupting shared PMBus register state and per-page data. The pmbus_regulator_get_voltage(), set_voltage(), and list_voltage() paths accessed shared data without holding update_lock, and the fix reworks notification delivery through a worker to avoid a mutex deadlock. There is no public exploit identified at time of analysis and EPSS is very low (0.02%), consistent with a hardware-dependent local integrity/availability issue rather than a broadly exploitable flaw.
Use-after-free in Linux kernel SPI subsystem (fsl_lpspi driver) causes NULL pointer dereference when DMA channels are torn down while SPI transfers are active. Local attackers with low privileges can trigger denial of service or potentially execute arbitrary code on affected systems running Linux kernel versions from 4.10 through 7.0-rc2, particularly impacting embedded and IoT devices using Freescale LPSPI controllers. EPSS score of 0.02% indicates very low observed exploitation probability, and no public exploit code or active exploitation has been identified at time of analysis. Vendor-released patches available across all affected stable kernel branches (5.10.253, 5.15.203, 6.1.168, 6.6.131, 6.12.80, 6.18.21, 6.19.11, 7.0).
Out-of-bounds read in the Linux kernel io_uring fdinfo handler allows a local, low-privileged user to leak adjacent kernel memory (and potentially crash the kernel) by reading /proc fdinfo for an io_uring instance created with IORING_SETUP_SQE_MIXED. The flaw affects Linux 6.19 and the 7.0 release candidates (rc1-rc7) and is fixed in 6.19.11 and 7.0. EPSS is negligible (0.02%, 5th percentile), there is no public exploit identified at time of analysis, and it is not on the CISA KEV list.
Local privilege escalation and kernel memory corruption in the Linux kernel's Intel Xe (drm/xe) GPU driver arises from incorrect prev/next tracking in the VM bind ioctl unwind path, affecting kernel 6.8 through 7.0-rc6 and stable branches before the 6.12.80/6.18.21/6.19.11 fixes. When a vectored bind operation fails and unwinds, the driver leaves overlapping GPU virtual-memory areas (VMAs) in place, corrupting VM state and triggering a WARNING at xe_vm.c:1217; a local user with access to the DRM/render device can reach this via crafted xe_vm_bind_ioctl calls (as observed with the vkd3d Direct3D-to-Vulkan translation layer). No public exploit identified at time of analysis, and EPSS is negligible at 0.02%.
Information disclosure and memory corruption in the Linux kernel's in-kernel SMB3 server (ksmbd) arises from smb2_calc_max_out_buf_len() being called with a hardcoded header length instead of the true offsetof() of the response ->Buffer field, after the read-compound rework in commit e2b76ab8b5c9. On affected kernels running ksmbd (6.6 through 7.0-rc3, plus stable backports), a miscalculated maximum output buffer length can cause the server to over-read into the response IOV, leaking adjacent kernel memory to an SMB client or corrupting response buffers. No public exploit identified at time of analysis, and EPSS is very low (0.03%, 9th percentile), consistent with a niche, non-default kernel subsystem rather than mass exploitation.
Memory exhaustion and kernel crash in Linux kernel's ksmbd SMB server allows remote unauthenticated denial of service via crafted lock requests. The smb2_lock() function contains three critical error-handling defects: memory leaks when vfs_lock_file() returns unexpected errors, stale error propagation in UNLOCK operations, and NULL pointer dereference during rollback when smb_flock_init() allocation fails. CVSS vector indicates network-accessible, low-complexity exploitation requiring no authentication. EPSS score of 0.02% (7th percentile) suggests minimal observed scanning activity, and no KEV listing confirms no widespread exploitation detected. However, the network attack vector (AV:N) and high availability impact (A:H) make this a realistic DoS risk for systems running ksmbd. Vendor patches available across stable kernel series 5.15-6.19.
Remote unauthenticated denial-of-service in Linux kernel's ksmbd SMB server allows attackers to terminate arbitrary active user sessions by sending crafted multichannel binding requests with invalid credentials. The flaw affects ksmbd (kernel-mode SMB server) across multiple stable kernel branches (6.1.x through 7.0). Vendor patches available for all affected versions. EPSS score of 0.08% (23rd percentile) indicates low observed exploitation likelihood, with no CISA KEV listing or public POC identified at time of analysis. The CVSS 8.2 rating reflects network-accessible attack surface with high availability impact, though actual exploitation requires specific SMB multichannel configuration.
Memory corruption in the Linux kernel sma1307 ASoC driver allows local authenticated users to trigger a double-free condition leading to potential privilege escalation, denial of service, or information disclosure. The vulnerability stems from improper cleanup of device-managed memory allocations in error paths within the sma1307_setting_loaded() function, where devm_kzalloc()-allocated resources are incorrectly freed with kfree(), causing devres to later release the same memory a second time. Vendor patches are available across multiple stable kernel branches (6.18.21, 6.19.11, 7.0). EPSS score of 0.02% (4th percentile) indicates low observed exploitation probability, and no active exploitation or public POC has been identified.
Use-after-free in Linux kernel ISO-TP CAN protocol driver allows local authenticated users to read freed memory, corrupt kernel state, or execute arbitrary code with kernel privileges. Affects kernels from commit 96d1c81e to 6.6.131, 6.12.80, 6.18.21, and 6.19.11. Vendor-released patches available across stable kernel branches. EPSS score 0.02% (5th percentile) indicates low probability of mass exploitation, and no public exploit identified at time of analysis, though CVSS 7.8 reflects high local privilege escalation potential if successfully exploited.
Use-after-free in Linux kernel media subsystem allows local authenticated attackers to potentially execute arbitrary code, escalate privileges, or cause system crashes. The race condition between MEDIA_REQUEST_IOC_REINIT and VIDIOC_REQBUFS(0) affects request-capable V4L2 media devices in kernels since version 4.20. Patches are available across multiple stable kernel branches (5.10.253, 5.15.203, 6.1.168, 6.6.131, 6.12.80, 6.18.21, 6.19.11, and 7.0). EPSS score of 0.02% indicates very low likelihood of mass exploitation, and no active exploitation or public POC has been identified.
Use-after-free in Linux kernel XFRM IPTFS subsystem allows local authenticated attackers to trigger high-severity memory corruption through failed state cloning operations. The vulnerability stems from premature publication of mode_data pointer before allocation completion, enabling arbitrary code execution, privilege escalation, or denial of service when IPsec IP-TFS (IP Traffic Flow Security) mode cloning fails. Vendor patches available for kernel versions 6.18.21, 6.19.11, and 7.0. EPSS score of 0.02% (4th percentile) indicates very low observed exploitation probability despite CVSS 7.8 rating, likely due to the specific IPTFS configuration prerequisite and local access requirement.
A buffer validation flaw in Linux kernel's TDX guest driver (versions 6.7+) allows local authenticated attackers to leak kernel memory beyond allocated quote buffers into userspace, potentially crossing container isolation boundaries in multi-tenant TDX environments. The vulnerability stems from insufficient validation of host-controlled quote_buf->out_len values during remote attestation operations. Patches available for stable branches 6.12.80, 6.18.21, 6.19.11, and mainline 7.0. EPSS score of 0.02% (5th percentile) indicates low exploitation probability in the wild, with no public exploit code or active exploitation confirmed at time of analysis.
Use-after-free in Linux kernel virtio_net driver allows local authenticated attackers with low privileges to potentially achieve high confidentiality, integrity, and availability impact. The flaw triggers when virtio_net is configured with napi_tx=N (non-NAPI transmit mode) and the IFF_XMIT_DST_RELEASE flag is cleared by tc route filter rules. When a network namespace is destroyed while packets remain queued in the virtio transmit ring, the freed dst_ops structure is later dereferenced during packet cleanup, causing kernel memory corruption. Vendor patches are available across multiple stable kernel branches (5.10.253, 5.15.203, 6.1.168, 6.6.131, 6.12.80, 6.18.21, 6.19.11, 7.0). EPSS score of 0.02% (7th percentile) suggests low probability of mass exploitation, and no active exploitation or public POC has been identified at time of analysis.
Memory corruption in the Linux kernel VFIO PCI subsystem allows local authenticated users to trigger double-free conditions and potentially execute arbitrary code with kernel privileges. The vulnerability stems from an incorrect error-handling path in the dma-buf export feature that calls dma_buf_put() before dma_buf_export() succeeds, leading to unbalanced reference counts and memory corruption during file descriptor exhaustion scenarios. Exploitation probability remains very low (EPSS 0.02%, 5th percentile) with no public exploit code or evidence of active exploitation. Patches are available in stable kernel versions 6.19.11 and 7.0.
Deadlock in Linux kernel EROFS filesystem bio completion path enables remote denial of service. When EROFS decompress operations occur in process context (e.g., dm-verity scenarios), vm_map_ram() called with GFP_KERNEL can trigger memory swapping I/O under low memory conditions, causing submit_bio_wait() to deadlock when bio_list is already initialized. CVSS rates this 7.5 High with network attack vector requiring no authentication, yet EPSS scores only 0.02% (7th percentile), suggesting theoretical rather than observed exploitation. Patches available across multiple stable kernel branches (5.15.203, 6.1.168, 6.6.131, 6.12.80, 6.18.21, 6.19.11, 7.0). Not listed in CISA KEV and no public exploit identified at time of analysis.
Out-of-bounds memory access in Linux kernel's IBM Virtual Fibre Channel (ibmvfc) driver allows adjacent network attackers to leak kernel memory contents. A compromised or malicious VIO server can supply a crafted num_written value exceeding max_targets in discover targets MAD responses, causing unbounded indexing into disc_buf[] and embedding out-of-bounds kernel data in subsequent PLOGI and Implicit Logout MADs sent back to the attacker. Vendor patches available across all maintained kernel branches (5.10.253, 5.15.203, 6.1.168, 6.6.131, 6.12.80, 6.18.21, 6.19.11, 7.0). EPSS score of 0.02% (7th percentile) indicates low observed exploitation probability. No public exploit code or CISA KEV listing identified at time of analysis.
Use-after-free vulnerability in Linux kernel iomap subsystem allows memory corruption when filesystem block size differs from I/O granularity. The flaw occurs during buffered read operations when ctx->cur_folio is accessed after ownership transfers to the I/O helper, potentially leading to data corruption, information disclosure, or system crashes. Affects Linux kernel 6.19.x series. CVSS 9.8 critical severity, but EPSS exploitation probability is very low (0.02%, 5th percentile). Vendor patches available via mainline kernel commits. No active exploitation or public POC identified at time of analysis.
Use-after-free in Linux Kernel XFS filesystem allows local authenticated users to execute arbitrary code, escalate privileges, or cause system crashes during filesystem unmount operations. The vulnerability stems from a race condition where background reclaim and inodegc processes continue running while the Active Item List (AIL) is being flushed during unmount, enabling concurrent access to freed memory structures. Patches are available across multiple stable kernel versions (5.10.253, 5.15.203, 6.1.168, 6.6.131, 6.12.80, 6.18.21, 6.19.11, 7.0). EPSS score of 0.02% suggests very low probability of mass exploitation, and no active exploitation or public POC is identified at time of analysis.
Use-after-free in Linux Kernel XFS file system allows local authenticated users to execute arbitrary code, escalate privileges, or cause denial of service. The vulnerability affects XFS implementations from kernel 5.9 onward due to improper handling of Active Item List (AIL) pointers when performing buffer I/O in inode and quota push callbacks. With EPSS exploitation probability at 0.02% and no confirmed active exploitation, this represents a moderate real-world risk limited by local access requirements and low attack complexity. Patches are available across multiple stable kernel branches (5.10.253, 5.15.203, 6.1.168, 6.6.131, 6.12.80, 6.18.21, 6.19.11, and 7.0).
Use-after-free in Linux kernel's XFS filesystem allows local authenticated users to achieve arbitrary code execution, privilege escalation, or information disclosure. The vulnerability occurs in the XFS Active Item List (AIL) push mechanism where log items can be freed by background reclaim processes while still being dereferenced by tracepoints. Vendor patches are available for kernel versions 6.1.168, 6.6.131, 6.12.80, 6.18.21, 6.19.11, and 7.0. EPSS score of 0.02% (7th percentile) indicates very low observed exploitation probability in the wild, and no public exploit code or active exploitation (CISA KEV) has been identified at time of analysis.
Local privilege escalation in Linux Kernel ext4 filesystem allows authenticated users to trigger kernel crashes and potentially execute arbitrary code with high privileges. The vulnerability stems from improper handling of inline data conversion when truncate() operations exceed inline storage capacity in ext4 filesystems. Affected kernel versions include mainline through 7.0-rc3 and stable branches 5.10.x through 6.19.x, with vendor patches available across all active kernel series. EPSS exploitation probability is very low (0.02%, 7th percentile) and no public exploit identified at time of analysis, though CVSS 7.8 reflects high local impact if exploited.
Race condition in Linux kernel ext4 filesystem allows denial of service through kernel panic when fast commit feature processes incompletely initialized journal inodes. Affects Linux kernel versions from 3.11 through multiple stable branches (5.10.x, 5.15.x, 6.1.x, 6.6.x, 6.12.x, 6.18.x, 6.19.x) prior to patched versions released in early 2025. Vendor patches available across all affected stable branches. EPSS score of 0.02% (7th percentile) indicates low observed exploitation probability. Not listed in CISA KEV, and no public exploit code identified at time of analysis. CVSS 8.8 reflects authenticated network attack vector, though real-world risk limited to systems where attackers have filesystem write access and ext4 fast commit is enabled.
Buffer overflow in Linux kernel ext4 filesystem allows local attackers with user interaction to achieve arbitrary code execution via crafted extent tree metadata. The ext4_ext_correct_indexes() function fails to validate index pointer bounds when walking up the extent tree, enabling slab-out-of-bounds memory reads when processing malicious filesystem images. With CVSS 7.8 (high severity) but only 0.02% EPSS (5th percentile), this represents elevated theoretical risk with minimal observed real-world exploitation. Vendor patches available across multiple stable kernel branches (6.12.80, 6.18.21, 6.19.11, 7.0), and no public exploit code or active exploitation confirmed at time of analysis.
Denial of service in Linux kernel ext4 filesystem allows remote attackers to trigger infinite loops and system hangs (143+ second inode lock blocking) via crafted mkdir/mknod operations. The vulnerability stems from incomplete cleanup when extent insertion fails - ext4_ext_map_blocks() reclaims physical blocks without deleting stale extent tree entries, causing reuse of blocks already allocated to xattrs. This triggers infinite loops in ext4_xattr_block_set() that hold inode locks indefinitely. With CVSS 9.4 (AV:N/AC:L/PR:N/UI:N) but EPSS only 0.02% (percentile 7), the network attack vector rating appears inconsistent with typical local filesystem exploitation. Patches available across stable kernel branches 6.1.168, 6.6.131, 6.12.80, 6.18.21, 6.19.11, and mainline 7.0. No active exploitation confirmed (not in CISA KEV), but tagged for denial-of-service impact.
Linux kernel ext4 filesystem allows mounting of maliciously crafted filesystems with bigalloc and non-zero s_first_data_block, potentially triggering memory corruption or information disclosure. Affects all Linux kernel versions from 2.6.12 (commit 1da177e) through 7.0, with patches released in stable branches 5.10.253, 5.15.203, 6.1.168, 6.6.131, 6.12.80, 6.18.21, and 6.19.11. CVSS 7.8 indicates high severity with local access and user interaction required. EPSS score of 0.02% (7th percentile) suggests low probability of widespread exploitation, and no active exploitation confirmed (not in CISA KEV).
Use-after-free in Linux kernel ext4 filesystem allows local attackers to potentially execute arbitrary code or cause denial of service during unmount operations. The vulnerability stems from a race condition between ext4_put_super() teardown and update_super_work() error notification, where sysfs_notify() accesses a freed kernfs_node object after kobject_del() has released it. Fixed in stable kernel releases 5.15.203, 6.1.168, 6.6.131, 6.12.80, 6.18.21, 6.19.11, and mainline 7.0. EPSS score of 0.02% (7th percentile) suggests low probability of exploitation in the wild, though CVSS vector indicates straightforward local exploitation requiring user interaction.
Use-after-free and NULL pointer dereference vulnerabilities in Linux kernel's ksmbd SMB server allow remote unauthenticated attackers to achieve arbitrary code execution, information disclosure, or denial of service. The flaws occur during oplock (opportunistic lock) publication when error handling frees memory still referenced by concurrent readers, and when global lease lists are accessed before critical pointers are initialized. With CVSS 9.8 (AV:N/AC:L/PR:N/UI:N), this represents a critical remote attack surface, though EPSS score of 0.02% (5th percentile) suggests minimal observed exploitation activity. Vendor patches are available across affected kernel versions 6.6.130-6.19.9.
Use-after-free in Linux kernel idxd DMA engine driver allows local authenticated attackers to execute arbitrary code, disclose sensitive memory, or crash the system when Function Level Reset operations fail to allocate scratch memory. The vulnerability affects Linux kernels from commit 98d187a98903 through versions 6.14, 6.18.x before 6.18.21, and 6.19.x before 6.19.11. Vendor patches are available across stable branches with EPSS indicating 0.02% exploitation probability (4th percentile), suggesting limited active targeting despite the high CVSS 7.8 score. No CISA KEV listing or public exploit code identified at time of analysis.
Use-after-free and descriptor management error in Linux kernel's Intel IDXD DMA engine driver allows NULL pointer dereferences, double completion, or descriptor leaks. The llist_abort_desc() function completes the wrong descriptor object due to a loop cursor bug introduced in commit aa8d18becc0c. Patches released for kernel 6.12.80, 6.18.21, 6.19.11, and 7.0. EPSS exploitation probability is very low (0.02%, 5th percentile), and no active exploitation or public exploit code identified. Despite CVSS 9.8 critical rating with network vector, the actual attack surface requires local access to DMA engine subsystems, making the CVSS vector likely inaccurate or context-dependent.
Read retry logic in the Linux kernel's netfs subsystem can incorrectly abandon all remaining subrequests due to an uninitialized or invalid pointer, potentially exposing unintended memory contents or causing denial of service through kernel crashes. Affects Linux kernel 6.12 through early 6.19 and 7.0 development branches. Vendor patches available for 6.18.21, 6.19.11, and mainline 7.0. EPSS score of 0.02% (4th percentile) indicates low real-world exploitation probability. Not listed in CISA KEV. CVSS 8.8 reflects network attack vector with user interaction required.
Out-of-bounds write in Linux kernel ksmbd allows authenticated remote attackers to cause memory corruption via crafted SMB2 compound requests combining QUERY_DIRECTORY and QUERY_INFO commands. The vulnerability arises when get_file_all_info() fails to validate OutputBufferLength against available buffer space before converting filenames to UTF-16, enabling buffer overflow beyond response buffer boundaries. With CVSS 8.8 (High) and network attack vector requiring only low privileges, this presents significant risk to systems running ksmbd SMB server. Vendor patches available across multiple kernel versions (5.15.203, 6.1.168, 6.6.131, 6.12.80, 6.18.21, 6.19.11, 7.0). EPSS exploitation probability remains low at 0.01% (2nd percentile), and no public exploit or CISA KEV listing identified at time of analysis.
Out-of-bounds write in Linux kernel's ksmbd server allows authenticated remote attackers with low-privilege SMB access to corrupt memory and potentially execute arbitrary code or crash the system. The vulnerability triggers when processing compound SMB2 requests (e.g., READ + QUERY_INFO for security descriptors) where the first command consumes most of the response buffer, causing ksmbd to write beyond allocated memory when building security descriptors from POSIX ACLs. Vendor patches are available for kernel versions 6.12.81, 6.18.22, 6.19.12, and 7.0. EPSS score of 0.01% suggests low observed exploitation probability, and no public exploit code or active exploitation has been identified at time of analysis.
Memory corruption in Linux kernel's algif_aead cryptographic interface allows local authenticated users to achieve arbitrary kernel memory read/write, leading to privilege escalation to root. The vulnerability stems from improper handling of in-place operations introduced in commit 72548b093ee3, affecting kernel versions from 4.14 through 6.19.x. Multiple public exploit codes exist including proof-of-concept demonstrations from security researchers, with EPSS score of 0.01% indicating currently low widespread exploitation likelihood despite POC availability.
Out-of-bounds read in the Linux kernel's X.509 certificate parser allows local unprivileged users to trigger memory corruption or denial of service by submitting a specially crafted certificate via the keyrings(7) API. The flaw exists in the handling of empty Basic Constraints or Key Usage extensions, where the first byte is dereferenced before the length check. A proof-of-concept was responsibly disclosed by the reporter, though no public exploit is identified at time of analysis and EPSS rates the exploitation probability as very low (0.01%).
Use-after-free in Linux kernel ACPI EC driver allows local authenticated attackers with low privileges to achieve high integrity, confidentiality, and availability impact on reduced-hardware platforms when GPIO IRQ provider defers probing. Vendor patches are available across stable branches (6.1.168, 6.6.131, 6.12.80, 6.18.21, 6.19.11, 7.0). EPSS score of 0.02% (7th percentile) indicates very low observed exploitation probability, and no active exploitation is confirmed (not in CISA KEV). The vulnerability triggers when EC handler cleanup fails during probe deferral, leaving a dangling pointer that is later dereferenced during AML evaluation of EC OpRegion accesses (battery, thermal, backlight operations).
Use-after-free in Linux kernel bonding driver allows local authenticated attackers with low privileges to trigger memory corruption via race condition during concurrent slave device operations. The vulnerability (CVSS 7.8, EPSS 0.02%) affects the bond_xmit_broadcast() function where concurrent slave enslave/release operations can mutate the slave list during RCU-protected iteration, causing the original skb to be double-consumed and double-freed. Vendor patches are available for kernel versions 6.18.22, 6.19.12, and 7.0. No public exploit or active exploitation confirmed at time of analysis.
Integer overflow in Linux kernel X.25 protocol stack allows remote unauthenticated attackers to trigger denial of service via fragmented packet accumulation. The fraglen field in x25_sock structure can overflow when processing fragmented X.25 packets, causing kernel crashes or resource exhaustion. Vendor-released patches confirm the vulnerability exists since initial Git history (2005) through kernel 6.19.x. EPSS score of 0.02% suggests low observed exploitation activity, though the network-accessible attack vector (AV:N) and lack of authentication requirements (PR:N) make this exploitable against any exposed X.25 network interface. No active exploitation confirmed (not in CISA KEV), but public patches reveal implementation details that could facilitate exploit development.
Use-after-free or race condition in Linux kernel netfilter connection tracking can lead to remote code execution, privilege escalation, or memory corruption. The vulnerability affects the nf_conntrack_expect module where unsafe access to helper names occurs without holding a reference to the master conntrack structure. Despite a critical CVSS score of 9.8 (network-accessible, no authentication required), EPSS exploitation probability is very low (0.02%, 7th percentile), and no active exploitation or public POC has been identified. Vendor patches are available for kernel versions 6.1.168, 6.6.134, 6.12.81, 6.18.22, 6.19.12, and 7.0.
A logic error in the Linux kernel's BPF (Berkeley Packet Filter) verifier allows local attackers with low privileges to exploit verifier/runtime divergence and achieve out-of-bounds map access, enabling arbitrary memory read/write and privilege escalation. The flaw affects the maybe_fork_scalars() function which incorrectly handles BPF_OR operations during state forking, tracking destination register as 0 when the runtime value is K (the constant operand). Patches are available from kernel.org for versions 6.12.80, 6.18.21, 6.19.11, and 7.0-rc5. EPSS score is extremely low (0.01%) and no public exploit or active exploitation has been identified at time of analysis.
Session hijacking in Linux kernel ksmbd SMB server allows authenticated network attackers to escalate privileges and access arbitrary sessions via failed multichannel binding requests. When SMB2_SESSION_SETUP with SMB2_SESSION_REQ_FLAG_BINDING fails, ksmbd incorrectly leaves the connection in a binding state, causing all subsequent session lookups to fall back to the global sessions table instead of connection-specific sessions. This enables attackers to access sessions across different connections, potentially leading to unauthorized data access and privilege escalation. Exploitation probability is extremely low (EPSS 0.01%, 1st percentile) with no public exploits or CISA KEV listing. Patches available for kernel versions 6.1.167, 6.6.130, 6.12.78, 6.18.20, 6.19.10, and mainline 7.0-rc5.
Use-after-free in Linux kernel Bluetooth SCO subsystem allows adjacent network attackers to achieve arbitrary code execution with high confidentiality, integrity, and availability impact. The vulnerability exists in sco_recv_frame() which releases a lock on conn->sk without holding a socket reference, creating a race condition where concurrent close() operations can free the socket before subsequent access. Vendor patches available across multiple stable kernel versions (6.6.131, 6.12.80, 6.18.21, 6.19.11, 7.0-rc6). EPSS score of 0.01% suggests minimal observed exploitation probability despite high CVSS 8.8 rating. No CISA KEV listing or public exploit identified at time of analysis.
Local out-of-bounds memory access in the Linux kernel netfilter connection-tracking (conntrack) subsystem allows a low-privileged user holding CAP_NET_ADMIN to read kernel slab memory well beyond object bounds. The flaw stems from ctnetlink and SCTP conntrack code trusting user-supplied netlink attributes without range validation, so a crafted CTA_PROTOINFO_SCTP_STATE value or an expectation with exp->dir=100 causes reads far past a 320-byte nf_conn object (confirmed via UBSAN by the reporter). No public exploit has been identified and EPSS is negligible (0.01%), but the bug is a confirmed, patched memory-safety defect suitable for kernel information disclosure or denial of service.
Local privilege-relevant memory corruption in the Linux kernel's IPsec (xfrm) NAT-keepalive subsystem arises from a use-after-free race during network namespace teardown, affecting kernels from 6.11 onward. When a netns is destroyed, xfrm_nat_keepalive_net_fini() cancels the keepalive work, but the subsequent state flush re-schedules nat_keepalive_work, which can then run against an already-freed net structure. This carries a CVSS 7.8 (local) rating; EPSS is negligible at 0.01% and it is not in CISA KEV, so no public exploit identified at time of analysis.
Out-of-bounds function-pointer read in the Linux kernel's DVB network (dvb-net) ULE decapsulation code allows a crafted MPEG-TS/ULE stream to index past the 255-element ule_mandatory_ext_handlers[]/ule_optional_ext_handlers[] tables when the extension header type equals 255, potentially invoking an arbitrary value as a function pointer. Affected systems are those using DVB adapters with the dvb-net ULE (Unidirectional Lightweight Encapsulation) path; the flaw is triggered by attacker-influenced network/broadcast data. No public exploit identified at time of analysis, EPSS is very low (0.01%), and the issue is not in CISA KEV, but the theoretical impact is control-flow hijack.
NULL pointer dereference in Linux kernel NFSD export cache cleanup allows local denial of service when RCU readers in e_show() and c_show() concurrently access export path and client name objects while cache_clean removes entries and drops the last reference prematurely. The vulnerability stems from path_put() and auth_domain_put() executing before the RCU grace period completes, freeing sub-objects still in use by readers. A fix has been merged upstream that defers these cleanup operations to a dedicated workqueue after the RCU grace period, ensuring safe resource release in process context where sleeping is permitted.
Use-after-free in Linux kernel NFSD /proc/fs/nfs/exports proc entry allows information disclosure when a network namespace is destroyed while an exports file descriptor remains open. The vulnerability occurs because exports_proc_open() captures a network namespace reference without holding a refcount, enabling nfsd_net_exit() to free the export cache while the fd is still active, leading to subsequent reads dereferencing freed memory. The fix holds a struct net reference for the lifetime of the
Heap overflow in Linux kernel NFSv4.0 LOCK replay cache allows unauthenticated remote attackers to corrupt kernel memory by triggering a denial-of-service or potential code execution. The vulnerability exists in nfsd4_encode_operation() which copies encoded LOCK responses up to 1024 bytes into a fixed 112-byte inline buffer without bounds checking, resulting in up to 944 bytes of slab-out-of-bounds writes. Exploitation requires two cooperating NFSv4.0 clients but no special privileges; upstream fixes are available across multiple stable kernel branches.
Buffer overflow in Linux kernel HID-BPF subsystem allows arbitrary return values from dispatch_hid_bpf_raw_requests() to overflow the hid_hw_request buffer without validation. The vulnerability affects all Linux kernel versions with HID-BPF support; attackers with the ability to load or influence BPF programs targeting HID devices can trigger memory corruption. No CVSS score, EPSS data, or confirmed active exploitation has been assigned at time of analysis.
Use-after-free in the Linux kernel's nvdimm/bus subsystem allows local privileged users to potentially trigger memory corruption when device_add() fails during nd_async_device_register() asynchronous initialization. The flaw stems from the parent device reference being dropped before the parent pointer is accessed on allocation failure paths. No public exploit identified at time of analysis, and EPSS exploitation probability is very low at 0.02%.
Linux kernel mm/rmap subsystem fails to correctly preserve page table entry attributes (writable and soft-dirty bits) when batching unmap operations on lazyfree folios, causing kernel panic via page table check violation when a large folio with mixed writable/non-writable PTEs is unmapped across multiple processes. The vulnerability affects all Linux kernel versions with the vulnerable folio_unmap_pte_batch() code path and can be triggered by local attackers through a specific sequence of memory management syscalls (MADV_DONTFORK, fork(), MADV_DOFORK, MADV_FREE, and memory reclaim), resulting in denial of service via kernel crash.
Linux kernel memory management allows installation of PMD entries pointing to non-existent physical memory or causes NULL pointer dereferences in move_pages_huge_pmd() when handling huge zero page migrations via UFFDIO_MOVE. The vulnerability occurs because the function incorrectly handles NULL folio pointers for huge zero pages, either producing bogus page frame numbers on SPARSEMEM_VMEMMAP systems or dereferencing NULL on other memory models. Additionally, destination PMD entries lose special mapping metadata (pmd_special flag), causing subsequent page reference counting corruption. No CVSS score is available; no active exploitation reported.