Linux
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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.
Use-after-free vulnerability in Linux kernel's Cadence MAC (macb) driver allows local attackers to read freed memory via ethtool get_ts_info calls on PTP-capable network interfaces. The PTP clock is registered when the interface opens and destroyed when it closes, but the ethtool handler can still access it after deallocation, causing a kernel memory access violation. No active exploitation confirmed; patch available in stable kernel releases.
Out-of-bounds read and write in the Broadcom bnxt_en network driver of the Linux kernel allows a malicious or compromised NIC to corrupt kernel heap memory or crash the system. The flaw resides in the DBG_BUF_PRODUCER async event handler, which uses a firmware-supplied 16-bit 'type' field as an unchecked index into the bp->bs_trace[] array. No public exploit identified at time of analysis and EPSS rates exploitation probability at just 0.02%, but the impact on confidentiality and availability is high where the trust boundary between NIC firmware and kernel is relevant.
Out-of-bounds read in Linux kernel Bluetooth L2CAP layer allows remote attackers to read adjacent kernel memory via truncated L2CAP_INFO_RSP packets with insufficient payload length. The l2cap_information_rsp() function validates only the fixed 4-byte header but then unconditionally accesses variable-length payload fields (feat_mask at offset +4 and fixed_chan at offset +1) without verifying the payload is present, triggering kernel memory disclosure on specially crafted Bluetooth frames.
Linux kernel SMB client incorrectly reuses Kerberos authentication sessions across multiple mounts with different username options, allowing an attacker or misconfigured system to access shares using unintended credentials. The vulnerability affects CIFS/SMB mounting with Kerberos (sec=krb5) when the username mount option is specified; the kernel fails to validate that the username parameter matches the authenticated session, causing subsequent mounts to inherit the first mount's credentials rather than failing with ENOKEY when the requested principal is absent from the keytab. This is a session management flaw that enables credential confusion and potential unauthorized share access.
Use-after-free vulnerability in Linux kernel SPI controller registration allows local attackers to trigger unclocked register accesses and potential information disclosure when per-CPU statistics allocation fails during controller initialization. The vulnerability affects all Linux kernel versions and is fixed via proper driver core deregistration on allocation failure; no CVSS score or active exploitation data available at time of analysis.
Linux kernel DRM/xe driver fails to protect GPU memory (GGTT) MMIO access during failed driver load or asynchronous buffer object teardown, potentially enabling information disclosure or memory corruption. The vulnerability affects systems with Intel Xe graphics where the driver's hotplug-based protection mechanism does not activate if initialization fails, leaving GGTT memory accessible after the driver should have been disabled. CVSS and KEV status not available; patches have been released in upstream Linux stable branches.
Use-after-free vulnerability in the Linux kernel's Bluetooth HIDP subsystem allows local attackers to trigger a kernel crash or potentially execute arbitrary code by failing to properly release L2CAP connection references when user callbacks are invoked. The flaw affects all Linux kernel versions in the CPE range and has been resolved through reference counting fixes in the L2CAP connection cleanup path; no public exploit code is currently identified, but the vulnerability requires local access to trigger via Bluetooth device manipulation.
Use-after-free in Linux kernel Bluetooth L2CAP layer allows local attackers to cause denial of service or potentially execute code via a race condition in l2cap_unregister_user(). The vulnerability arises because l2cap_register_user() and l2cap_unregister_user() access conn->users without proper locking (conn->lock), while l2cap_conn_del() protects the same structure with conn->lock, creating concurrent access to freed memory. All Linux kernel versions with Bluetooth L2CAP support are affected. Patch available via Linux stable kernel commits.
Memory corruption and potential kernel freezes occur in the Linux kernel's IP tunnel implementation when VXLAN or GENEVE tunnels transmit packets, due to incorrect offset calculations in per-CPU statistics tracking on 32-bit systems. The vulnerability arises from iptunnel_xmit_stats() assuming all tunnels use NETDEV_PCPU_STAT_TSTATS, but VXLAN and GENEVE actually use NETDEV_PCPU_STAT_DSTATS with a different memory layout, causing syncp sequence counter overwrites that corrupt statistics or deadlock the kernel. Patch commits are available in the Linux kernel stable tree and address this by adapting the statistics handler and repositioning the pcpu_stat_type field to improve cache efficiency.
Use-after-free in Linux kernel netfilter ctnetlink module allows local attackers to read freed kernel memory by triggering multiple-round netlink dump operations on conntrack expectations, exploiting improper reference counting in ctnetlink_dump_exp_ct() that drops conntrack references before the dump callback completes. The vulnerability requires local network namespace access and CAP_NET_ADMIN capability but enables information disclosure of kernel heap contents via KASAN-detected slab-use-after-free on ct->ext dereference.
Integer truncation in Linux kernel netfilter SIP helper allows remote attackers to bypass Content-Length validation and cause information disclosure via malformed SIP messages. The sip_help_tcp() function stores SIP Content-Length header values (returned as unsigned long) into an unsigned int variable, causing values exceeding UINT_MAX (4,294,967,295) to truncate silently on 64-bit systems. This miscalculation causes the parser to misidentify message boundaries, treating trailing TCP segment dat
Out-of-bounds read in Linux kernel netfilter H.323/RAS packet decoding allows local or remote attackers to read 1-4 bytes beyond allocated buffer boundaries via malformed packets. The vulnerability exists in decode_int() within nf_conntrack_h323, where insufficient boundary validation before reading variable-length integer fields permits information disclosure or potential denial of service. No CVSS score or KEV status published; patch available across multiple stable kernel branches via upstream commits.
Out-of-bounds read in Linux kernel netfilter nf_conntrack_h323 DecodeQ931() function allows remote attackers to trigger a kernel memory disclosure or denial of service by sending a specially crafted H.323 packet with zero-length UserUserIE field, causing integer underflow when a 16-bit length value is decremented without validation. No public exploit code identified at time of analysis, and CVSS severity not quantified in available data.
Use-after-free in Linux kernel MANA hardware channel teardown (net/mana driver) allows concurrent interrupt handlers to dereference freed memory in mana_hwc_destroy_channel(), potentially causing NULL pointer dereference or memory corruption. The vulnerability stems from improper teardown ordering where hwc->caller_ctx is freed before CQ/EQ IRQ handlers are fully synchronized, affecting all Linux kernel versions with the MANA driver. Fixes are available across stable kernel branches via upstream commit reordering.
Memory leak in Linux kernel's TI ICSSG PRU Ethernet driver XDP_DROP path causes page pool exhaustion and out-of-memory conditions on systems using XDP packet dropping in non-zero-copy mode. The vulnerability affects all Linux kernel versions with the vulnerable icssg-prueth driver code; page recycling was incorrectly removed from the XDP_DROP handler to support AF_XDP zero-copy mode, but this created a resource leak in standard mode. No active exploitation identified; this is a kernel stability and denial-of-service issue affecting embedded and edge systems using TI PRU Ethernet hardware.
Infinite loop in Linux kernel bonding device header parsing allows local denial of service when two bonding devices are stacked. The bond_header_parse() function can recurse indefinitely because skb->dev always points to the top of the device hierarchy. The fix adds a bounded recursion parameter to the header_ops parse() method to ensure the leaf parse method is called and prevent endless loops. This vulnerability affects all Linux kernel versions with the vulnerable bonding code and requires local access to trigger.
NULL dereference and use-after-free in the Linux kernel's SMC (Shared Memory Communications) socket implementation occur when smc_tcp_syn_recv_sock() races with socket close operations, allowing a local attacker to trigger a kernel panic via concurrent manipulation of TCP SYN handling and SMC listen socket closure. The vulnerability affects the Linux kernel across multiple versions via the net/smc subsystem and is addressed through RCU-protected access and refcount validation rather than lock-based serialization.
Double-free memory corruption in the Linux kernel's TEQL (Trivial Link Equalizer) qdisc implementation allows local attackers to cause kernel crashes via denial of service. The vulnerability occurs when qdisc_reset is called without proper synchronization on lockless Qdisc root configurations, creating a race condition that results in use-after-free and double-free conditions in packet buffer management. This affects all Linux kernel versions with the vulnerable TEQL code path and requires local access to trigger via specially crafted packet scheduling operations.
Out-of-bounds read in the Linux kernel's cdc_ncm USB networking driver allows a local attacker with a malicious or compromised USB CDC NCM device to read kernel memory beyond the skb buffer. The flaw lives in cdc_ncm_rx_verify_ndp16(), where the NDP16 nframes bounds check omits the ndpoffset value, letting DPE array iteration in cdc_ncm_rx_fixup() walk past the legitimate buffer when wNdpIndex points near the end of the NTB. No public exploit identified at time of analysis and EPSS exploitation probability is 0.02% (5th percentile), but a patch is available from upstream Linux maintainers.
Buffer overflow in Linux kernel cdc_ncm driver allows out-of-bounds memory reads when processing malformed USB CDC NCM (Network Control Model) packets with NDP32 (Normal Data Packet) headers positioned near the end of the network transfer buffer. The vulnerability exists in cdc_ncm_rx_verify_ndp32() where bounds checking fails to account for the ndpoffset value when validating the DPE (Data Packet Element) array size, potentially enabling local denial-of-service or information disclosure on systems with affected USB CDC NCM network devices. No active exploitation or public proof-of-concept identified at time of analysis.
A use-after-free vulnerability in the Linux kernel's mshv (Microsoft Hyper-V) driver allows local attackers to trigger a kernel panic by unmapping user memory after a failed mshv_map_user_memory() call. The error path incorrectly calls vfree() without unregistering the associated MMU notifier, leaving a dangling reference that fires when userspace performs subsequent memory operations. This is a memory safety issue affecting the Hyper-V virtualization subsystem in the Linux kernel.
Use-after-free in Linux kernel ksmbd SMB server allows local or remote attackers to read freed memory and potentially achieve denial of service or code execution via compound SMB2 requests that reuse a tree connection after it has been disconnected and its associated share_conf structure freed. The vulnerability exists because smb2_get_ksmbd_tcon() bypasses state validation checks when reusing connections in compound requests, enabling subsequent commands to dereference already-freed share_conf pointers. No CVE severity metrics are available, but KASAN confirms memory corruption is triggered in smb2_write operations during tree disconnect sequences.
Use-after-free in Linux kernel's ksmbd SMB server allows remote attackers to crash the kernel or potentially execute code via malicious SMB2 DURABLE_REQ_V2 replay operations. The vulnerability occurs when parse_durable_handle_context() unconditionally reassigns file handle connection pointers during replay operations, causing stale pointer dereferences when the reassigned connection is subsequently freed. A KASAN report confirms the use-after-free in spin_lock operations during file descriptor closure, triggered during SMB2 connection handling in the ksmbd-io workqueue. No public exploit code or active exploitation has been confirmed at time of analysis.
Interrupt storm in Linux kernel dpaa2-switch driver occurs when a bounds check rejects an out-of-bounds if_id in the IRQ handler but fails to clear the interrupt status, causing repeated spurious interrupts. This denial-of-service condition affects the NXP DPAA2 Ethernet switch driver on systems running vulnerable Linux kernel versions. An attacker with the ability to trigger malformed frames or hardware state transitions could exhaust CPU resources through interrupt flooding.
Use-after-free vulnerability in Linux kernel futex handling allows local attackers to read freed memory via race condition between futex_key_to_node_opt() and vma_replace_policy(). When mbind() concurrently replaces virtual memory area policies, __futex_key_to_node() may dereference a freed mempolicy structure, enabling information disclosure of kernel memory. The vulnerability requires local access and precise timing but poses memory safety risk in multi-threaded applications using futex operations alongside memory policy changes.
Use-after-free in Linux kernel clsact qdisc initialization and destruction rollback allows local denial of service or potential information disclosure when qdisc replacement fails midway during tcf_block_get_ext() operations. The vulnerability stems from asymmetric initialization and cleanup paths where egress_entry references from a previous clsact instance remain valid during failure scenarios, leading to double-free or use-after-free conditions. Affected Linux kernel versions across all distributions that include the clsact traffic control qdisc require patching.
Use-after-free in Linux kernel netfilter BPF hook memory management allows local attackers to read sensitive kernel memory via concurrent nfnetlink_hooks dumping operations. The vulnerability arises from premature memory release in hook structures before RCU readers complete their access, enabling information disclosure through netlink interface. No active exploitation confirmed, but the KASAN report demonstrates reliable reproducer availability.
Use-after-free in Linux kernel AppArmor allows local authenticated users to achieve high confidentiality, integrity, and availability impact through a race condition between inode eviction and filesystem callbacks. The vulnerability stems from premature reference release of i_private data before inode cleanup completes. Patch available from kernel.org stable branches affecting Linux 4.13+ with Ubuntu marking priority=high across 729 releases. EPSS score of 0.02% suggests limited observed exploitation attempts despite widespread kernel deployment.
Use-after-free in Linux kernel AppArmor allows local authenticated attackers to achieve high-impact code execution, privilege escalation, or denial of service via race condition on rawdata inode dereference. Affects kernel 4.13+ including current LTS branches. Patches available for 6.6.130, 6.12.77, 6.18.18, 6.19.8, and 7.0-rc4. EPSS score is low (0.02%) with no public exploit identified at time of analysis, but Ubuntu rated this priority=high affecting 729 releases.
Double-free memory corruption in Linux kernel's AppArmor profile replacement allows local authenticated users to trigger kernel crashes or potentially execute arbitrary code with kernel privileges. The flaw affects Linux kernel versions from 5.5 onwards, with vendor patches available across multiple stable branches (6.6.130, 6.12.77, 6.18.18, 6.19.8, 7.0-rc4). EPSS exploitation probability is low (0.02%, 5th percentile) and no public exploit identified at time of analysis, though Ubuntu rates this medium priority with patches deployed across 729 releases.
Out-of-bounds read and write in Linux kernel AppArmor DFA verification allows local authenticated users to cause memory corruption and potential privilege escalation. Affects Linux kernel 4.17+ through 6.12.x, actively patched in stable branches 6.6.130, 6.12.77, 6.18.18, and 6.19.8. The vulnerability occurs during AppArmor policy loading when malformed DFA structures bypass bounds checking in verify_dfa(). EPSS score of 0.02% suggests low exploitation probability in the wild; no public exploit code or CISA KEV listing identified. Ubuntu rates this medium priority with patches released via USN-8152-1.
Out-of-bounds memory read in Linux kernel AppArmor DFA matching affects kernel versions since 4.17 due to macro side-effect bug. The match_char() macro evaluates its character parameter multiple times when called with *str++, causing the pointer to advance past buffer boundaries during differential encoding chain traversal. Ubuntu has released patches (USN-8152-1) with fixes available in kernels 6.6.130, 6.12.77, 6.18.18, 6.19.8, and 7.0-rc4. EPSS score of 0.02% (5th percentile) indicates very low exploitation probability, and no public exploit or CISA KEV listing exists. CVSS 7.8 reflects local high-privilege impact, but real-world risk is limited to authenticated local users who can trigger AppArmor path permission checks.
Linux kernel nfnetlink_osf module fails to validate TCP option lengths in OS fingerprint definitions, allowing null pointer dereference and out-of-bounds memory reads when processing packets with malformed or missing TCP options. The vulnerability affects Linux kernel versions across multiple stable branches (6.1.x through 6.19.x and 7.0-rc5), with EPSS score of 0.02% indicating low practical exploitation probability despite the memory safety issue. No public exploit code or active exploitation has been reported.
Buffer overflow in Linux kernel Bluetooth L2CAP subsystem allows adjacent network attackers to achieve code execution with high integrity and confidentiality impact. The flaw occurs when the kernel incorrectly accepts multiple L2CAP_ECRED_CONN_REQ commands with the same identifier, violating Bluetooth Core Specification requirements. This causes allocation beyond the L2CAP_ECRED_MAX_CID limit (5 channels) in l2cap_ecred_rsp_defer, triggering memory corruption. Affects Linux kernel 5.7+ through multiple stable branches. Vendor patches available for 6.1.167, 6.6.130, 6.12.78, 6.18.20, 6.19.10, and 7.0-rc5. EPSS score of 0.02% suggests low likelihood of mass exploitation, no public POC or active exploitation confirmed at time of analysis.
A race condition exists in the Linux kernel's bridge CFM (Connectivity Fault Management) peer MEP (Maintenance End Point) deletion code where a delayed work queue can be rescheduled between the cancellation check and memory freeing, leading to use-after-free on freed memory. This affects all Linux kernel versions with the vulnerable bridge CFM implementation. An attacker with local access to trigger peer MEP deletion while CFM frame reception occurs could cause a kernel use-after-free condition potentially leading to information disclosure or denial of service.
A use-after-free vulnerability exists in the Linux kernel's netfilter nf_tables flowtable implementation during error handling in the hook registration path. When hook registration fails (due to reaching maximum hook limits or hardware offload setup failures), the flowtable is not properly synchronized with RCU grace periods before being released, allowing concurrent packet processing or control plane operations (nfnetlink_hook) to access freed memory. This vulnerability affects all Linux kernel versions with the vulnerable nf_tables code and was discovered via KASAN reports during hook dumping operations; while not currently listed in known exploited vulnerabilities (KEV) databases, the use-after-free nature presents a real risk for denial of service or information disclosure in environments utilizing netfilter flowtables.
Local privilege escalation in Linux kernel netfilter subsystem (xt_CT module) allows authenticated attackers with low privileges to achieve arbitrary code execution, information disclosure, and denial of service. The vulnerability stems from improper handling of packets enqueued in nfqueue when connection tracking templates are removed, creating use-after-free conditions on helper modules or timeout policies. Patches released across stable branches 6.1.167, 6.6.130, 6.12.78, 6.18.20, 6.19.10, and mainline 7.0-rc5. EPSS score of 0.02% (7th percentile) indicates low probability of mass exploitation despite 7.8 CVSS severity, with no KEV listing or public POC identified.
A buffer overflow vulnerability exists in the Linux kernel's dma_map_sg tracepoint that can be triggered when tracing large scatter-gather lists, particularly with devices like virtio-gpu that create large DRM buffers exceeding 1000 entries. The vulnerability affects all Linux kernel versions prior to the fix and can cause perf buffer overflow warnings and potential kernel instability when dynamic array allocations exceed PERF_MAX_TRACE_SIZE (8192 bytes). While this is a kernel-level issue requiring local access to trigger tracing functionality, it poses a denial-of-service risk and memory safety concern for systems using performance tracing on workloads with large scatter-gather operations.
A metadata validation vulnerability in the Linux kernel's Squashfs filesystem implementation allows out-of-bounds memory access when processing corrupted or malicious filesystem images. Specifically, a negative metadata block offset derived from a corrupted index lookup table is passed to squashfs_copy_data without bounds checking, causing a general protection fault. Any Linux system mounting an untrusted Squashfs image is affected, potentially enabling denial of service or information disclosure attacks, though no active exploitation in the wild is currently documented.
A double-put vulnerability exists in the Linux kernel's pinctrl cirrus cs42l43 driver probe function, where devm_add_action_or_reset() already invokes cleanup on failure but the code explicitly calls put again, causing a double-free condition. This affects Linux kernel versions across multiple stable branches where the cs42l43 pinctrl driver is compiled. The vulnerability could lead to kernel memory corruption and potential denial of service or information disclosure when the driver probe path encounters failure conditions.
This vulnerability affects the Linux kernel's ARM64 BPF JIT compiler, where insufficient alignment requirements (4 bytes instead of 8 bytes) for the JIT buffer cause the bpf_plt structure's u64 target field to be misaligned. This misalignment creates two critical issues: UBSAN generates warnings for undefined behavior, and more dangerously, concurrent updates to the target field via WRITE_ONCE() in bpf_arch_text_poke() can result in torn 64-bit reads on ARM64 systems, causing the JIT to jump to corrupted addresses. Linux kernel versions using ARM64 BPF JIT are affected, and while there is no public exploit code available, this represents a memory corruption vulnerability that could lead to privilege escalation or denial of service. Multiple stable kernel patches are available addressing this issue.
A buffer overflow vulnerability exists in the Linux kernel's IFE (Intermediate Functional Element) traffic control action module where metadata list replacement incorrectly appends new metadata instead of replacing old entries, causing unbounded metadata accumulation. This affects all Linux kernel versions with the vulnerable IFE scheduling code (cpe:2.3:a:linux:linux). An attacker with the ability to modify traffic control rules can trigger an out-of-bounds write via the ife_tlv_meta_encode function, potentially achieving kernel memory corruption and denial of service. The vulnerability is not listed as actively exploited in public KEV databases, but patches are available across multiple stable kernel branches.
Local privilege escalation and denial of service in Linux kernel NFC rawsock implementation (versions 3.1 through 6.19.6, patched in 6.1.167, 6.6.130, 6.12.77, 6.18.17, 6.19.7, 7.0-rc3) allows authenticated local users to trigger use-after-free conditions via race between socket teardown and asynchronous NFC data transmission. CVSS 7.8 HIGH with local attack vector requiring low privileges. EPSS score 0.02% (6th percentile) indicates minimal real-world exploitation probability. Vendor patches available across all stable kernel branches since early 2026.
The Linux kernel's ksmbd (SMB server implementation) component uses the non-constant-time memcmp() function to compare Message Authentication Codes (MACs) instead of the cryptographically-secure crypto_memneq() function, enabling timing-based attacks to leak authentication credentials. All Linux kernel versions with ksmbd are affected, allowing attackers to potentially forge authentication by measuring response time differences during MAC validation. While no public exploit code is confirmed, multiple stable kernel branches have received patches addressing this vulnerability, indicating kernel maintainers treated this as a legitimate information disclosure risk.
An out-of-bounds (OOB) memory access vulnerability exists in the Linux kernel's MediaTek MT7925 WiFi driver in the mt7925_mac_write_txwi_80211() function, which fails to validate frame length before accessing management frame fields. This vulnerability affects systems running Linux kernel versions with the vulnerable MT7925 driver code and could allow an attacker with local access or the ability to craft malicious wireless frames to read or write out-of-bounds memory, potentially leading to information disclosure or denial of service. While no CVSS score, EPSS data, or active exploitation reports are currently documented, the vulnerability has been patched across multiple stable Linux kernel branches as indicated by four distinct commit references.
This vulnerability is a race condition in the Linux kernel's PCI Designware endpoint driver where MSI-X interrupt writes to the host can complete after the corresponding Address Translation Unit (ATU) entry is unmapped, potentially corrupting host memory or triggering IOMMU errors. The vulnerability affects all Linux kernel versions with the vulnerable code path in the PCI DWC endpoint implementation (cpe:2.3:a:linux:linux:*:*:*:*:*:*:*:*), specifically impacting systems using PCI endpoint devices with MSI-X interrupt support such as NVMe-PCI endpoint function drivers. An attacker with the ability to trigger high-frequency MSI-X interrupts from a malicious endpoint device could exploit this race condition to cause denial of service through IOMMU faults or potentially corrupt host memory.
A stack-out-of-bounds write vulnerability exists in the Linux kernel's BPF devmap implementation where the get_upper_ifindexes() function iterates over upper network devices without properly validating buffer bounds. An attacker with the ability to create multiple virtual network devices (e.g., more than 8 macvlans) and trigger XDP packet processing with BPF_F_BROADCAST and BPF_F_EXCLUDE_INGRESS flags can write beyond allocated stack memory, potentially causing denial of service or arbitrary code execution. The vulnerability affects all Linux kernel versions using the vulnerable devmap code path and has been patched across multiple stable kernel branches, indicating recognition as a real security concern requiring immediate updates.
This vulnerability is a speculative execution safety flaw in the Linux kernel's x86 FRED (Flexible Return and Event Delivery) interrupt handling code where array_index_nospec() is incorrectly positioned, allowing speculative memory predictions to leak sensitive information through side-channel attacks. The vulnerability affects all Linux kernel versions with FRED support (primarily x86-64 systems with newer Intel/AMD processors). An attacker with local access could potentially infer sensitive kernel memory values through timing or covert channel attacks exploiting the unsafe speculation window.
Use-after-free in Linux kernel's netfilter nft_set_pipapo enables local privilege escalation to kernel-level access (confidentiality/integrity/availability compromise). Affects Linux kernel 5.6+ through multiple stable branches (6.1.x, 6.6.x, 6.12.x, 6.18.x, 6.19.x). Vendor patches available across all affected kernel series. EPSS score of 0.03% (9th percentile) indicates low automated exploitation likelihood, consistent with local-access requirement and lack of public exploit code at time of analysis.
A resource management vulnerability exists in the Linux kernel's DRM/XE (Intel Graphics Execution Manager) queue initialization code where the finalization function is not called when execution queue creation fails, leaving the queue registered in the GuC (GPU Unified Compute) list and potentially causing invalid memory references. This affects all Linux kernel versions containing the vulnerable DRM/XE driver code. The vulnerability could lead to memory corruption or system instability when an exec queue creation failure occurs, though exploitation would require local kernel code execution capability or ability to trigger queue creation failures.
A use-after-free vulnerability exists in the Linux kernel's crypto subsystem (CCP driver) within the sev_tsm_init_locked() function error path, where a pr_err() statement dereferences freed memory to access structure fields t->tio_en and t->tio_init_done after kfree(t) has been executed. This vulnerability can lead to information disclosure by reading freed memory contents. The issue affects Linux kernel versions across distributions using the affected CCP crypto driver code and was identified by the Smatch static analyzer.
A memory corruption vulnerability exists in the Linux kernel's XDP (eXpress Data Path) subsystem where negative tailroom calculations are incorrectly reported as large unsigned integers, allowing buffer overflows during tail growth operations. This affects Linux kernel versions across multiple stable branches when certain Ethernet drivers (notably ixgbevf) report incorrect DMA write sizes, leading to heap corruption, segmentation faults, and general protection faults as demonstrated in the xskxceiver test utility. The vulnerability has no CVSS score assigned and shows no active KEV exploitation status, but represents a critical memory safety issue affecting systems using XDP with affected Ethernet drivers.
Use-after-free in Linux kernel network traffic control subsystem allows local authenticated attackers to execute arbitrary code with high privileges when changing network queue pair configurations on lockless qdiscs (virtio-net confirmed affected). Race condition between qdisc_reset_all_tx_gt() and dequeue operations causes memory to be freed while still in use. Vendor-released patches available for stable kernel branches 6.1.167, 6.6.130, 6.12.77, 6.18.17, 6.19.7, and mainline 7.0-rc3. EPSS exploitation probability is low (0.02%, 7th percentile) and no active exploitation confirmed at time of analysis, though a reliable reproducer exists using iperf3 and ethtool queue manipulation.
Use-after-free in Linux kernel cfg80211 WiFi subsystem allows local authenticated users with low privileges to achieve high impact on confidentiality, integrity, and availability through rfkill work-queue exploitation. The vulnerability affects Linux kernel versions 2.6.31 through 6.19-rc2, with patches released for stable branches 6.1.167, 6.6.130, 6.12.77, 6.18.17, 6.19.7, and 7.0-rc2. EPSS score of 0.02% (7th percentile) indicates very low probability of mass exploitation. No CISA KEV listing or public exploit identified at time of analysis, though the issue was discovered via syzkaller fuzzing, demonstrating automated exploit development potential.
A buffer over-read vulnerability exists in the Linux kernel's CXL mailbox command handler where the cxl_payload_from_user_allowed() function casts and dereferences user-supplied payload data without first validating its size. An unprivileged local attacker can send a raw mailbox command with an undersized payload (e.g., 1 byte instead of the expected 16 bytes for CXL_MBOX_OP_CLEAR_LOG) to trigger a kernel memory read past the allocated buffer, causing a KASAN splat and potential denial of service. While not yet listed in the KEV catalog or with public EPSS/CVSS scoring, patch commits are available in the Linux stable kernel repositories, indicating the vulnerability has been resolved upstream.
This vulnerability is a memory leak in the Linux kernel's AF_XDP socket implementation where buffers fail to be properly returned to the free list due to improper list node reinitialization. The vulnerability affects all Linux kernel versions with the AF_XDP subsystem enabled, potentially allowing local attackers or unprivileged users to exhaust kernel memory over time. While not actively exploited in the wild according to available intelligence, the vulnerability has clear patches available in stable kernel branches and represents a real denial-of-service risk for systems relying on XDP functionality.
An out-of-bounds (OOB) memory access vulnerability exists in the Linux kernel's MediaTek MT7996 WiFi driver (mt76) within the mt7996_mac_write_txwi_80211() function. The vulnerability occurs when the function accesses management frame fields without first validating the frame length, potentially allowing information disclosure or denial of service on systems using affected MT7996 hardware. Multiple stable kernel patches are available across several kernel versions, indicating the issue has been actively remediated in the upstream Linux project.
The Apple Silicon SMC hwmon driver (macsmc-hwmon) in the Linux kernel contains critical memory safety bugs in sensor population and float conversion logic. Specifically, voltage sensors are incorrectly registered to the temperature sensor array, and float-to-32-bit conversion has flawed exponent handling, potentially leading to out-of-bounds memory access, data corruption, or incorrect fan control on affected Apple Silicon systems. The vulnerability affects Linux kernel versions with the macsmc-hwmon driver and has been patched; no active exploitation or POC is currently known, but the nature of the bugs suggests high real-world risk for systems relying on thermal management.
A use-after-free and list corruption vulnerability exists in the Linux kernel's IPMI (Intelligent Platform Management Interface) subsystem when the SMI sender returns an error. The vulnerability affects all Linux kernel versions with the vulnerable IPMI code path, allowing local attackers or processes with IPMI access to trigger denial of service conditions through list corruption and NULL pointer dereferences. The vulnerability is not currently listed in CISA's KEV catalog, and no CVSS or EPSS scores have been published; however, the technical nature indicates high reliability for exploitation by local actors with kernel interface access.
A use-after-free (UAF) vulnerability exists in the Linux kernel's BPF subsystem within the bpf_trampoline_link_cgroup_shim function, where a race condition allows a process to reference memory after it has been freed. An attacker with CAP_BPF or CAP_PERFMON capabilities can trigger this vulnerability to cause a kernel crash (denial of service). A proof-of-concept has been demonstrated by the reporter, showing the bug can be reliably reproduced; the vulnerability is not listed on the CISA KEV catalog but affects all Linux kernel versions until patched.
A descriptor validation bypass in the Linux kernel's ALSA USB audio subsystem allows malicious USB devices to provide truncated UAC3 (USB Audio Class 3) header descriptors that escape validation checks, potentially causing out-of-bounds memory reads. The vulnerability stems from an incorrect protocol version constant (UAC_VERSION_2 instead of UAC_VERSION_3) in the validator table, causing validation logic to never execute for actual UAC3 devices. Affected are all Linux kernel versions containing the vulnerable code path; while CVSS and EPSS scores are not provided, this is a local privilege escalation / denial of service vector requiring physical USB device access or local code execution capability to exploit.
A logic error in the Linux kernel's drm/vmwgfx driver causes the vmw_translate_ptr functions to return success when pointer lookups actually fail, because the error handling was not updated when the underlying lookup function's return mechanism changed from returning a pointer to returning an error code with pointer as an out parameter. This allows uninitialized pointer dereferences and out-of-bounds memory access when the functions incorrectly report success, potentially enabling information disclosure or privilege escalation via the VMware graphics driver.
An out-of-bounds (OOB) memory access vulnerability exists in the Linux kernel's mt76 WiFi driver, specifically in the mt76_connac2_mac_write_txwi_80211() function which fails to validate frame length before accessing management frame fields. This affects all Linux kernel versions containing the vulnerable mt76 driver code and could allow an attacker to read sensitive kernel memory or trigger a denial of service through a specially crafted WiFi management frame. The vulnerability has been patched across multiple stable kernel branches with fixes available since the issue was identified.
A use-after-free vulnerability exists in the Linux kernel's pm8001 SCSI driver where the pm8001_queue_command() function incorrectly returns -ENODEV after already freeing a SAS task, causing the upper-layer libsas driver to attempt a second free operation. This affects all Linux kernel versions with the vulnerable pm8001 driver code, and while not remotely exploitable by default, it can lead to kernel memory corruption and denial of service on systems using PM8001-compatible SCSI controllers. No CVSS score, EPSS data, or active KEV status is currently available, but multiple stable kernel patches have been released across multiple branches.
Out-of-bounds memory access in the Linux kernel's accel/rocket DRM driver allows local authenticated users to trigger denial of service and potential information disclosure during probe failure paths. The flaw stems from improper error unwinding in rocket_probe() when rocket_core_init() fails (notably on EPROBE_DEFER), leaving stale counter state that subsequent code dereferences out of bounds. No public exploit identified at time of analysis, and EPSS scores exploitation likelihood at 0.02% (4th percentile), consistent with a hardware-driver-specific issue requiring local access.
This vulnerability is a race condition in the Linux kernel's BPF devmap subsystem that occurs on PREEMPT_RT kernels, where per-CPU bulk queue structures can be accessed concurrently by multiple preemptible tasks on the same CPU. An attacker or unprivileged local process can trigger use-after-free, double-free, or memory corruption conditions by crafting specific XDP (eXpress Data Path) redirect operations that cause concurrent access to shared queue structures, potentially leading to kernel crashes, information disclosure, or privilege escalation. The vulnerability affects all Linux kernel versions with the vulnerable devmap code path and has been patched upstream, though CVSS and EPSS scores are not yet assigned and no public exploit or KEV status is currently documented.
An out-of-bounds memory write vulnerability exists in the Linux kernel's AMD XDNA accelerator driver (accel/amdxdna) where a memset() operation clears a command header before validating sufficient space is available in the command slot, potentially leading to memory corruption. The vulnerability affects Linux kernel versions across multiple releases where the amdxdna driver is present and enabled. An attacker with local access and appropriate capabilities to interact with the amdxdna device could trigger this memory corruption to achieve denial of service or potentially escalate privileges.
Use-after-free in the Linux kernel's libertas wireless driver (lbs_free_adapter()) allows local privileged users to corrupt memory when a timer callback races with adapter teardown. The flaw stems from using non-synchronous timer_delete() instead of timer_delete_sync() on command_timer and tx_lockup_timer, leaving callbacks free to dereference freed driver_lock, cur_cmd, and dev fields. EPSS is very low (0.02%, 7th percentile) and there is no public exploit identified at time of analysis, but the bug has existed since the driver's introduction and on stable trees through 6.18.x.
A size calculation overflow vulnerability exists in the Linux kernel's accel/amdxdna driver that can result in undersized buffer allocations and potential memory corruption. The vulnerability affects Linux kernel versions across multiple branches where the AMD XDNA accelerator driver is compiled. An attacker with local access could exploit this to trigger memory corruption, potentially leading to denial of service or privilege escalation, though exploitation complexity and attack surface requirements remain moderate.
Xen privcmd driver in Linux kernel allows root processes in unprivileged guest VMs to bypass secure boot protections by issuing arbitrary hypercalls that modify kernel memory. This Xen Security Advisory (XSA-482) affects Linux kernels running as Xen domU guests with secure boot enabled. The vulnerability is addressed in kernel patches 6.1.167, 6.6.130, 6.12.78, 6.18.20, and 6.19.10. EPSS score of 0.03% (9th percentile) indicates low probability of widespread exploitation. No active exploitation confirmed at time of analysis; POC status unknown.
A resource management flaw in the Linux kernel's netfilter nf_tables subsystem fails to properly iterate over all pending catchall elements during transaction processing, leading to incomplete cleanup when a map holding catchall elements is destroyed. This affects Linux kernel versions across multiple stable branches and can result in memory corruption, information disclosure, or denial of service when crafted netfilter rule transactions are processed. The vulnerability is not known to be actively exploited in the wild, but the presence of multiple stable branch patches and specific affected kernel versions indicates kernel maintainers have treated this as a material flaw requiring coordinated remediation.
A race condition exists in the Linux kernel's io_uring subsystem where task work flags can be manipulated on stale ring memory during concurrent ring resize operations when DEFER_TASKRUN or SETUP_TASKRUN modes are enabled. This vulnerability affects Linux kernel versions including 6.13, 6.18.19, 6.19.9, and 7.0-rc4, and could allow an attacker with local code execution capabilities to cause information disclosure or kernel memory corruption. The vulnerability has been patched across multiple stable kernel versions as evidenced by available git commits, though no active KEV status or EPSS score has been published.
Linux kernel netfilter xt_IDLETIMER subsystem crashes when revision 0 rules reuse ALARM-type timer labels created by revision 1, triggering mod_timer() on an uninitialized timer_list. Affects Linux kernel 5.7+ through 6.19.x series. Local authenticated attackers with CAP_NET_ADMIN (PR:L) can cause kernel panic on systems with panic_on_warn=1, achieving high-severity local denial of service or potential privilege escalation via kernel memory corruption. EPSS score is very low (0.02%, 4th percentile) indicating minimal observed exploitation likelihood. No public exploit code identified at time of analysis.
A use-after-free race condition exists in the Linux kernel's macvlan driver within the macvlan_common_newlink() error handling path. When a macvlan device creation fails after the network device becomes visible to the RCU (Read-Copy-Update) subsystem, the caller's subsequent free_netdev(dev) can race with ongoing packet forwarding operations, causing kernel memory corruption and potential information disclosure. This vulnerability affects Linux kernel versions 5.10 through 6.19 and later, and while no public exploit exists, the issue is reproducible via crafted netlink commands that trigger concurrent device creation and packet transmission.
A use-after-free vulnerability exists in the Linux kernel's netfilter nf_tables subsystem where a set element can be published and removed without waiting for RCU grace period completion, allowing concurrent RCU readers to access freed memory. This affects all Linux kernel versions across multiple stable branches (4.10 and later) as indicated by the CPE cpe:2.3:a:linux:linux:*:*:*:*:*:*:*:*. An attacker with local access to manipulate netfilter rules could trigger information disclosure or denial of service by exploiting the race condition during batch insertion of elements into a full netfilter set.
A race condition exists in the Linux kernel's perf subsystem where __perf_event_overflow() can execute with only preemption disabled (rather than IRQs disabled) on software events, creating a window for concurrent execution with perf_event_exit_event() and related cleanup functions. This race condition allows the overflow handler to access kernel structures (such as BPF programs) that are being freed concurrently, potentially leading to use-after-free conditions, memory corruption, or privilege escalation. The vulnerability affects multiple stable Linux kernel versions and has patches available across multiple kernel branches (6.12.77, 6.19.7, 7.0-rc2, and others as indicated by the git commit references).
Use-after-free in Linux kernel traffic control (net/sched) occurs when act_ct action returns TC_ACT_CONSUMED while a packet is held by the defragmentation engine, allowing local authenticated attackers with low privileges to achieve code execution, denial of service, or information disclosure. Affects Linux kernel 6.8 through 6.12.x and 6.18.x series. Vendor patches available across multiple stable branches (commits 524ce8b4, 380ad8b7, 9deda0fc, 11cb63b0). EPSS score of 0.02% (4th percentile) indicates very low observed exploitation likelihood despite 7.8 CVSS rating. No active exploitation confirmed; not listed in CISA KEV.
Out-of-bounds read in Linux kernel's AppArmor subsystem allows local authenticated attackers to disclose kernel memory and potentially crash the system via maliciously crafted security policies. Affects Linux kernels from 3.4 onwards with patches released for stable branches 6.12.77, 6.18.18, 6.19.8, and 7.0-rc4. No active exploitation confirmed (not in CISA KEV), EPSS probability low at 0.02%, but Ubuntu rates priority as medium with patches deployed across 729 releases. Requires local access with low privileges (PR:L) and ability to load AppArmor policies.
Local privilege escalation in Linux kernel AppArmor allows low-privilege users to manipulate security policy via confused deputy attack. Attackers pass file descriptors for apparmorfs interfaces to privileged processes, enabling full policy management capabilities including disabling confinement and bypassing user namespace restrictions. Publicly available exploit code exists. EPSS score 0.01% suggests low widespread exploitation probability. Patches released for kernel 6.12.77, 6.18.18, 6.19.8, and 7.0-rc4 with multiple distribution advisories available.
Linux kernel DVB digital video recorder driver allows local authenticated users to trigger use-after-free conditions via stale waitqueue entries, potentially achieving privilege escalation to root or causing kernel crashes. The vulnerability stems from improper waitqueue reinitialization when reopening DVR devices, orphaning existing epoll/io_uring poll entries. Affects Linux kernel versions from 2.6.17 through 6.19.6, with patches available in 6.12.77, 6.18.17, 6.19.7, and 7.0-rc2. EPSS score of 0.02% (4th percentile) indicates low observed exploitation activity, though CVSS 7.8 reflects high impact if local access is obtained.
A race condition in the Linux kernel's perf_mmap() function creates a use-after-free vulnerability when concurrent threads attempt to access a ring buffer during failed memory mapping operations. The vulnerability affects Linux kernel versions across 6.18.17, 6.19.7, and 7.0-rc2, allowing a local attacker with standard user privileges to trigger refcount saturation warnings and potential kernel crashes via denial of service. This issue was discovered by Syzkaller fuzzing and has patches available across multiple stable kernel branches.
A stack out-of-bounds write vulnerability exists in the Linux kernel's mac80211 WiFi subsystem in the ieee80211_ml_reconfiguration function, where the link_id parameter extracted from the ML Reconfiguration element is not properly bounds-checked before being used as an array index. The vulnerability affects Linux kernel versions across multiple release branches (6.5 through 7.0-rc2), allowing an attacker with network proximity to craft a malicious WiFi frame to trigger a buffer overflow and potentially cause denial of service or code execution. While no CVSS score or EPSS data is currently published, the vulnerability has been assigned EUVD-2026-12809 and patches are available across stable kernel branches.
Race condition in Linux kernel's Traffic Control act_gate scheduler allows local authenticated users to trigger memory corruption and potentially execute arbitrary code or cause denial of service. Affects Linux kernel 5.8+ through 6.19.x and 7.0-rc3. Vulnerability arises when concurrent gate action replacement occurs during hrtimer callback or dump operations, creating a use-after-free scenario. No active exploitation confirmed (EPSS 0.02%, not in CISA KEV). Vendor patches available across multiple stable branches including 6.18.18, 6.19.8, and 7.0-rc3.
A memory allocation vulnerability exists in the Linux kernel's NVMe Persistent Reservation implementation where the nvme_pr_read_keys() function fails to properly handle large num_keys values passed from userspace, resulting in excessive memory allocation attempts up to 4MB that trigger page allocator warnings and potential denial of service. This affects Linux kernel versions across multiple stable branches (6.5, 6.12.77, 6.18.17, 6.19.7, and 7.0-rc3) and requires local access with ioctl privileges to trigger. The vulnerability is addressed through replacement of kzalloc() with kvzalloc() to support larger allocations via vmalloc fallback, and patches are available across multiple kernel stable branches.
A negative integer underflow vulnerability exists in the Linux kernel's RDMA/umad subsystem where the ib_umad_write function fails to validate user-controlled data_len calculations, allowing a mismatch between user MAD header size and RMPP header length to produce negative values. This negative data_len can propagate to ib_create_send_mad() and trigger an out-of-bounds memset in alloc_send_rmpp_list(), causing kernel memory corruption and denial of service. The vulnerability affects Linux kernel versions from 2.6.24 through multiple stable branches (5.10, 5.15, 6.1, 6.6, 6.12, 6.18, 6.19) and requires local access to RDMA user-mode interface to exploit, with patches available across multiple stable kernel versions as referenced in the git commits.
A null pointer dereference vulnerability exists in the Linux kernel's RDMA/siw (Software iWARP) module in the TCP receive data path handler. When siw_get_hdr() returns an error before initializing the receive FPDU context, the error handling code attempts to dereference qp->rx_fpdu without null checking, potentially causing a kernel panic and denial of service. The vulnerability affects multiple Linux kernel versions across stable branches (5.10, 5.15, 6.1, 6.6, 6.12, and others) and has been patched across numerous kernel releases.
In the Linux kernel, the following vulnerability has been resolved: tls: Fix race condition in tls_sw_cancel_work_tx() This issue was discovered during a code audit.
In the Linux kernel, the following vulnerability has been resolved: espintcp: Fix race condition in espintcp_close() This issue was discovered during a code audit.
High severity vulnerability in ImageMagick. A stack buffer overflow exists in ImageMagick's morphology kernel parsing functions. User-controlled kernel strings exceeding a buffer are copied into fixed-size stack buffers via memcpy without bounds checking, resulting in stack corruption.
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.
Use-after-free vulnerability in Linux kernel's Cadence MAC (macb) driver allows local attackers to read freed memory via ethtool get_ts_info calls on PTP-capable network interfaces. The PTP clock is registered when the interface opens and destroyed when it closes, but the ethtool handler can still access it after deallocation, causing a kernel memory access violation. No active exploitation confirmed; patch available in stable kernel releases.
Out-of-bounds read and write in the Broadcom bnxt_en network driver of the Linux kernel allows a malicious or compromised NIC to corrupt kernel heap memory or crash the system. The flaw resides in the DBG_BUF_PRODUCER async event handler, which uses a firmware-supplied 16-bit 'type' field as an unchecked index into the bp->bs_trace[] array. No public exploit identified at time of analysis and EPSS rates exploitation probability at just 0.02%, but the impact on confidentiality and availability is high where the trust boundary between NIC firmware and kernel is relevant.
Out-of-bounds read in Linux kernel Bluetooth L2CAP layer allows remote attackers to read adjacent kernel memory via truncated L2CAP_INFO_RSP packets with insufficient payload length. The l2cap_information_rsp() function validates only the fixed 4-byte header but then unconditionally accesses variable-length payload fields (feat_mask at offset +4 and fixed_chan at offset +1) without verifying the payload is present, triggering kernel memory disclosure on specially crafted Bluetooth frames.
Linux kernel SMB client incorrectly reuses Kerberos authentication sessions across multiple mounts with different username options, allowing an attacker or misconfigured system to access shares using unintended credentials. The vulnerability affects CIFS/SMB mounting with Kerberos (sec=krb5) when the username mount option is specified; the kernel fails to validate that the username parameter matches the authenticated session, causing subsequent mounts to inherit the first mount's credentials rather than failing with ENOKEY when the requested principal is absent from the keytab. This is a session management flaw that enables credential confusion and potential unauthorized share access.
Use-after-free vulnerability in Linux kernel SPI controller registration allows local attackers to trigger unclocked register accesses and potential information disclosure when per-CPU statistics allocation fails during controller initialization. The vulnerability affects all Linux kernel versions and is fixed via proper driver core deregistration on allocation failure; no CVSS score or active exploitation data available at time of analysis.
Linux kernel DRM/xe driver fails to protect GPU memory (GGTT) MMIO access during failed driver load or asynchronous buffer object teardown, potentially enabling information disclosure or memory corruption. The vulnerability affects systems with Intel Xe graphics where the driver's hotplug-based protection mechanism does not activate if initialization fails, leaving GGTT memory accessible after the driver should have been disabled. CVSS and KEV status not available; patches have been released in upstream Linux stable branches.
Use-after-free vulnerability in the Linux kernel's Bluetooth HIDP subsystem allows local attackers to trigger a kernel crash or potentially execute arbitrary code by failing to properly release L2CAP connection references when user callbacks are invoked. The flaw affects all Linux kernel versions in the CPE range and has been resolved through reference counting fixes in the L2CAP connection cleanup path; no public exploit code is currently identified, but the vulnerability requires local access to trigger via Bluetooth device manipulation.
Use-after-free in Linux kernel Bluetooth L2CAP layer allows local attackers to cause denial of service or potentially execute code via a race condition in l2cap_unregister_user(). The vulnerability arises because l2cap_register_user() and l2cap_unregister_user() access conn->users without proper locking (conn->lock), while l2cap_conn_del() protects the same structure with conn->lock, creating concurrent access to freed memory. All Linux kernel versions with Bluetooth L2CAP support are affected. Patch available via Linux stable kernel commits.
Memory corruption and potential kernel freezes occur in the Linux kernel's IP tunnel implementation when VXLAN or GENEVE tunnels transmit packets, due to incorrect offset calculations in per-CPU statistics tracking on 32-bit systems. The vulnerability arises from iptunnel_xmit_stats() assuming all tunnels use NETDEV_PCPU_STAT_TSTATS, but VXLAN and GENEVE actually use NETDEV_PCPU_STAT_DSTATS with a different memory layout, causing syncp sequence counter overwrites that corrupt statistics or deadlock the kernel. Patch commits are available in the Linux kernel stable tree and address this by adapting the statistics handler and repositioning the pcpu_stat_type field to improve cache efficiency.
Use-after-free in Linux kernel netfilter ctnetlink module allows local attackers to read freed kernel memory by triggering multiple-round netlink dump operations on conntrack expectations, exploiting improper reference counting in ctnetlink_dump_exp_ct() that drops conntrack references before the dump callback completes. The vulnerability requires local network namespace access and CAP_NET_ADMIN capability but enables information disclosure of kernel heap contents via KASAN-detected slab-use-after-free on ct->ext dereference.
Integer truncation in Linux kernel netfilter SIP helper allows remote attackers to bypass Content-Length validation and cause information disclosure via malformed SIP messages. The sip_help_tcp() function stores SIP Content-Length header values (returned as unsigned long) into an unsigned int variable, causing values exceeding UINT_MAX (4,294,967,295) to truncate silently on 64-bit systems. This miscalculation causes the parser to misidentify message boundaries, treating trailing TCP segment dat
Out-of-bounds read in Linux kernel netfilter H.323/RAS packet decoding allows local or remote attackers to read 1-4 bytes beyond allocated buffer boundaries via malformed packets. The vulnerability exists in decode_int() within nf_conntrack_h323, where insufficient boundary validation before reading variable-length integer fields permits information disclosure or potential denial of service. No CVSS score or KEV status published; patch available across multiple stable kernel branches via upstream commits.
Out-of-bounds read in Linux kernel netfilter nf_conntrack_h323 DecodeQ931() function allows remote attackers to trigger a kernel memory disclosure or denial of service by sending a specially crafted H.323 packet with zero-length UserUserIE field, causing integer underflow when a 16-bit length value is decremented without validation. No public exploit code identified at time of analysis, and CVSS severity not quantified in available data.
Use-after-free in Linux kernel MANA hardware channel teardown (net/mana driver) allows concurrent interrupt handlers to dereference freed memory in mana_hwc_destroy_channel(), potentially causing NULL pointer dereference or memory corruption. The vulnerability stems from improper teardown ordering where hwc->caller_ctx is freed before CQ/EQ IRQ handlers are fully synchronized, affecting all Linux kernel versions with the MANA driver. Fixes are available across stable kernel branches via upstream commit reordering.
Memory leak in Linux kernel's TI ICSSG PRU Ethernet driver XDP_DROP path causes page pool exhaustion and out-of-memory conditions on systems using XDP packet dropping in non-zero-copy mode. The vulnerability affects all Linux kernel versions with the vulnerable icssg-prueth driver code; page recycling was incorrectly removed from the XDP_DROP handler to support AF_XDP zero-copy mode, but this created a resource leak in standard mode. No active exploitation identified; this is a kernel stability and denial-of-service issue affecting embedded and edge systems using TI PRU Ethernet hardware.
Infinite loop in Linux kernel bonding device header parsing allows local denial of service when two bonding devices are stacked. The bond_header_parse() function can recurse indefinitely because skb->dev always points to the top of the device hierarchy. The fix adds a bounded recursion parameter to the header_ops parse() method to ensure the leaf parse method is called and prevent endless loops. This vulnerability affects all Linux kernel versions with the vulnerable bonding code and requires local access to trigger.
NULL dereference and use-after-free in the Linux kernel's SMC (Shared Memory Communications) socket implementation occur when smc_tcp_syn_recv_sock() races with socket close operations, allowing a local attacker to trigger a kernel panic via concurrent manipulation of TCP SYN handling and SMC listen socket closure. The vulnerability affects the Linux kernel across multiple versions via the net/smc subsystem and is addressed through RCU-protected access and refcount validation rather than lock-based serialization.
Double-free memory corruption in the Linux kernel's TEQL (Trivial Link Equalizer) qdisc implementation allows local attackers to cause kernel crashes via denial of service. The vulnerability occurs when qdisc_reset is called without proper synchronization on lockless Qdisc root configurations, creating a race condition that results in use-after-free and double-free conditions in packet buffer management. This affects all Linux kernel versions with the vulnerable TEQL code path and requires local access to trigger via specially crafted packet scheduling operations.
Out-of-bounds read in the Linux kernel's cdc_ncm USB networking driver allows a local attacker with a malicious or compromised USB CDC NCM device to read kernel memory beyond the skb buffer. The flaw lives in cdc_ncm_rx_verify_ndp16(), where the NDP16 nframes bounds check omits the ndpoffset value, letting DPE array iteration in cdc_ncm_rx_fixup() walk past the legitimate buffer when wNdpIndex points near the end of the NTB. No public exploit identified at time of analysis and EPSS exploitation probability is 0.02% (5th percentile), but a patch is available from upstream Linux maintainers.
Buffer overflow in Linux kernel cdc_ncm driver allows out-of-bounds memory reads when processing malformed USB CDC NCM (Network Control Model) packets with NDP32 (Normal Data Packet) headers positioned near the end of the network transfer buffer. The vulnerability exists in cdc_ncm_rx_verify_ndp32() where bounds checking fails to account for the ndpoffset value when validating the DPE (Data Packet Element) array size, potentially enabling local denial-of-service or information disclosure on systems with affected USB CDC NCM network devices. No active exploitation or public proof-of-concept identified at time of analysis.
A use-after-free vulnerability in the Linux kernel's mshv (Microsoft Hyper-V) driver allows local attackers to trigger a kernel panic by unmapping user memory after a failed mshv_map_user_memory() call. The error path incorrectly calls vfree() without unregistering the associated MMU notifier, leaving a dangling reference that fires when userspace performs subsequent memory operations. This is a memory safety issue affecting the Hyper-V virtualization subsystem in the Linux kernel.
Use-after-free in Linux kernel ksmbd SMB server allows local or remote attackers to read freed memory and potentially achieve denial of service or code execution via compound SMB2 requests that reuse a tree connection after it has been disconnected and its associated share_conf structure freed. The vulnerability exists because smb2_get_ksmbd_tcon() bypasses state validation checks when reusing connections in compound requests, enabling subsequent commands to dereference already-freed share_conf pointers. No CVE severity metrics are available, but KASAN confirms memory corruption is triggered in smb2_write operations during tree disconnect sequences.
Use-after-free in Linux kernel's ksmbd SMB server allows remote attackers to crash the kernel or potentially execute code via malicious SMB2 DURABLE_REQ_V2 replay operations. The vulnerability occurs when parse_durable_handle_context() unconditionally reassigns file handle connection pointers during replay operations, causing stale pointer dereferences when the reassigned connection is subsequently freed. A KASAN report confirms the use-after-free in spin_lock operations during file descriptor closure, triggered during SMB2 connection handling in the ksmbd-io workqueue. No public exploit code or active exploitation has been confirmed at time of analysis.
Interrupt storm in Linux kernel dpaa2-switch driver occurs when a bounds check rejects an out-of-bounds if_id in the IRQ handler but fails to clear the interrupt status, causing repeated spurious interrupts. This denial-of-service condition affects the NXP DPAA2 Ethernet switch driver on systems running vulnerable Linux kernel versions. An attacker with the ability to trigger malformed frames or hardware state transitions could exhaust CPU resources through interrupt flooding.
Use-after-free vulnerability in Linux kernel futex handling allows local attackers to read freed memory via race condition between futex_key_to_node_opt() and vma_replace_policy(). When mbind() concurrently replaces virtual memory area policies, __futex_key_to_node() may dereference a freed mempolicy structure, enabling information disclosure of kernel memory. The vulnerability requires local access and precise timing but poses memory safety risk in multi-threaded applications using futex operations alongside memory policy changes.
Use-after-free in Linux kernel clsact qdisc initialization and destruction rollback allows local denial of service or potential information disclosure when qdisc replacement fails midway during tcf_block_get_ext() operations. The vulnerability stems from asymmetric initialization and cleanup paths where egress_entry references from a previous clsact instance remain valid during failure scenarios, leading to double-free or use-after-free conditions. Affected Linux kernel versions across all distributions that include the clsact traffic control qdisc require patching.
Use-after-free in Linux kernel netfilter BPF hook memory management allows local attackers to read sensitive kernel memory via concurrent nfnetlink_hooks dumping operations. The vulnerability arises from premature memory release in hook structures before RCU readers complete their access, enabling information disclosure through netlink interface. No active exploitation confirmed, but the KASAN report demonstrates reliable reproducer availability.
Use-after-free in Linux kernel AppArmor allows local authenticated users to achieve high confidentiality, integrity, and availability impact through a race condition between inode eviction and filesystem callbacks. The vulnerability stems from premature reference release of i_private data before inode cleanup completes. Patch available from kernel.org stable branches affecting Linux 4.13+ with Ubuntu marking priority=high across 729 releases. EPSS score of 0.02% suggests limited observed exploitation attempts despite widespread kernel deployment.
Use-after-free in Linux kernel AppArmor allows local authenticated attackers to achieve high-impact code execution, privilege escalation, or denial of service via race condition on rawdata inode dereference. Affects kernel 4.13+ including current LTS branches. Patches available for 6.6.130, 6.12.77, 6.18.18, 6.19.8, and 7.0-rc4. EPSS score is low (0.02%) with no public exploit identified at time of analysis, but Ubuntu rated this priority=high affecting 729 releases.
Double-free memory corruption in Linux kernel's AppArmor profile replacement allows local authenticated users to trigger kernel crashes or potentially execute arbitrary code with kernel privileges. The flaw affects Linux kernel versions from 5.5 onwards, with vendor patches available across multiple stable branches (6.6.130, 6.12.77, 6.18.18, 6.19.8, 7.0-rc4). EPSS exploitation probability is low (0.02%, 5th percentile) and no public exploit identified at time of analysis, though Ubuntu rates this medium priority with patches deployed across 729 releases.
Out-of-bounds read and write in Linux kernel AppArmor DFA verification allows local authenticated users to cause memory corruption and potential privilege escalation. Affects Linux kernel 4.17+ through 6.12.x, actively patched in stable branches 6.6.130, 6.12.77, 6.18.18, and 6.19.8. The vulnerability occurs during AppArmor policy loading when malformed DFA structures bypass bounds checking in verify_dfa(). EPSS score of 0.02% suggests low exploitation probability in the wild; no public exploit code or CISA KEV listing identified. Ubuntu rates this medium priority with patches released via USN-8152-1.
Out-of-bounds memory read in Linux kernel AppArmor DFA matching affects kernel versions since 4.17 due to macro side-effect bug. The match_char() macro evaluates its character parameter multiple times when called with *str++, causing the pointer to advance past buffer boundaries during differential encoding chain traversal. Ubuntu has released patches (USN-8152-1) with fixes available in kernels 6.6.130, 6.12.77, 6.18.18, 6.19.8, and 7.0-rc4. EPSS score of 0.02% (5th percentile) indicates very low exploitation probability, and no public exploit or CISA KEV listing exists. CVSS 7.8 reflects local high-privilege impact, but real-world risk is limited to authenticated local users who can trigger AppArmor path permission checks.
Linux kernel nfnetlink_osf module fails to validate TCP option lengths in OS fingerprint definitions, allowing null pointer dereference and out-of-bounds memory reads when processing packets with malformed or missing TCP options. The vulnerability affects Linux kernel versions across multiple stable branches (6.1.x through 6.19.x and 7.0-rc5), with EPSS score of 0.02% indicating low practical exploitation probability despite the memory safety issue. No public exploit code or active exploitation has been reported.
Buffer overflow in Linux kernel Bluetooth L2CAP subsystem allows adjacent network attackers to achieve code execution with high integrity and confidentiality impact. The flaw occurs when the kernel incorrectly accepts multiple L2CAP_ECRED_CONN_REQ commands with the same identifier, violating Bluetooth Core Specification requirements. This causes allocation beyond the L2CAP_ECRED_MAX_CID limit (5 channels) in l2cap_ecred_rsp_defer, triggering memory corruption. Affects Linux kernel 5.7+ through multiple stable branches. Vendor patches available for 6.1.167, 6.6.130, 6.12.78, 6.18.20, 6.19.10, and 7.0-rc5. EPSS score of 0.02% suggests low likelihood of mass exploitation, no public POC or active exploitation confirmed at time of analysis.
A race condition exists in the Linux kernel's bridge CFM (Connectivity Fault Management) peer MEP (Maintenance End Point) deletion code where a delayed work queue can be rescheduled between the cancellation check and memory freeing, leading to use-after-free on freed memory. This affects all Linux kernel versions with the vulnerable bridge CFM implementation. An attacker with local access to trigger peer MEP deletion while CFM frame reception occurs could cause a kernel use-after-free condition potentially leading to information disclosure or denial of service.
A use-after-free vulnerability exists in the Linux kernel's netfilter nf_tables flowtable implementation during error handling in the hook registration path. When hook registration fails (due to reaching maximum hook limits or hardware offload setup failures), the flowtable is not properly synchronized with RCU grace periods before being released, allowing concurrent packet processing or control plane operations (nfnetlink_hook) to access freed memory. This vulnerability affects all Linux kernel versions with the vulnerable nf_tables code and was discovered via KASAN reports during hook dumping operations; while not currently listed in known exploited vulnerabilities (KEV) databases, the use-after-free nature presents a real risk for denial of service or information disclosure in environments utilizing netfilter flowtables.
Local privilege escalation in Linux kernel netfilter subsystem (xt_CT module) allows authenticated attackers with low privileges to achieve arbitrary code execution, information disclosure, and denial of service. The vulnerability stems from improper handling of packets enqueued in nfqueue when connection tracking templates are removed, creating use-after-free conditions on helper modules or timeout policies. Patches released across stable branches 6.1.167, 6.6.130, 6.12.78, 6.18.20, 6.19.10, and mainline 7.0-rc5. EPSS score of 0.02% (7th percentile) indicates low probability of mass exploitation despite 7.8 CVSS severity, with no KEV listing or public POC identified.
A buffer overflow vulnerability exists in the Linux kernel's dma_map_sg tracepoint that can be triggered when tracing large scatter-gather lists, particularly with devices like virtio-gpu that create large DRM buffers exceeding 1000 entries. The vulnerability affects all Linux kernel versions prior to the fix and can cause perf buffer overflow warnings and potential kernel instability when dynamic array allocations exceed PERF_MAX_TRACE_SIZE (8192 bytes). While this is a kernel-level issue requiring local access to trigger tracing functionality, it poses a denial-of-service risk and memory safety concern for systems using performance tracing on workloads with large scatter-gather operations.
A metadata validation vulnerability in the Linux kernel's Squashfs filesystem implementation allows out-of-bounds memory access when processing corrupted or malicious filesystem images. Specifically, a negative metadata block offset derived from a corrupted index lookup table is passed to squashfs_copy_data without bounds checking, causing a general protection fault. Any Linux system mounting an untrusted Squashfs image is affected, potentially enabling denial of service or information disclosure attacks, though no active exploitation in the wild is currently documented.
A double-put vulnerability exists in the Linux kernel's pinctrl cirrus cs42l43 driver probe function, where devm_add_action_or_reset() already invokes cleanup on failure but the code explicitly calls put again, causing a double-free condition. This affects Linux kernel versions across multiple stable branches where the cs42l43 pinctrl driver is compiled. The vulnerability could lead to kernel memory corruption and potential denial of service or information disclosure when the driver probe path encounters failure conditions.
This vulnerability affects the Linux kernel's ARM64 BPF JIT compiler, where insufficient alignment requirements (4 bytes instead of 8 bytes) for the JIT buffer cause the bpf_plt structure's u64 target field to be misaligned. This misalignment creates two critical issues: UBSAN generates warnings for undefined behavior, and more dangerously, concurrent updates to the target field via WRITE_ONCE() in bpf_arch_text_poke() can result in torn 64-bit reads on ARM64 systems, causing the JIT to jump to corrupted addresses. Linux kernel versions using ARM64 BPF JIT are affected, and while there is no public exploit code available, this represents a memory corruption vulnerability that could lead to privilege escalation or denial of service. Multiple stable kernel patches are available addressing this issue.
A buffer overflow vulnerability exists in the Linux kernel's IFE (Intermediate Functional Element) traffic control action module where metadata list replacement incorrectly appends new metadata instead of replacing old entries, causing unbounded metadata accumulation. This affects all Linux kernel versions with the vulnerable IFE scheduling code (cpe:2.3:a:linux:linux). An attacker with the ability to modify traffic control rules can trigger an out-of-bounds write via the ife_tlv_meta_encode function, potentially achieving kernel memory corruption and denial of service. The vulnerability is not listed as actively exploited in public KEV databases, but patches are available across multiple stable kernel branches.
Local privilege escalation and denial of service in Linux kernel NFC rawsock implementation (versions 3.1 through 6.19.6, patched in 6.1.167, 6.6.130, 6.12.77, 6.18.17, 6.19.7, 7.0-rc3) allows authenticated local users to trigger use-after-free conditions via race between socket teardown and asynchronous NFC data transmission. CVSS 7.8 HIGH with local attack vector requiring low privileges. EPSS score 0.02% (6th percentile) indicates minimal real-world exploitation probability. Vendor patches available across all stable kernel branches since early 2026.
The Linux kernel's ksmbd (SMB server implementation) component uses the non-constant-time memcmp() function to compare Message Authentication Codes (MACs) instead of the cryptographically-secure crypto_memneq() function, enabling timing-based attacks to leak authentication credentials. All Linux kernel versions with ksmbd are affected, allowing attackers to potentially forge authentication by measuring response time differences during MAC validation. While no public exploit code is confirmed, multiple stable kernel branches have received patches addressing this vulnerability, indicating kernel maintainers treated this as a legitimate information disclosure risk.
An out-of-bounds (OOB) memory access vulnerability exists in the Linux kernel's MediaTek MT7925 WiFi driver in the mt7925_mac_write_txwi_80211() function, which fails to validate frame length before accessing management frame fields. This vulnerability affects systems running Linux kernel versions with the vulnerable MT7925 driver code and could allow an attacker with local access or the ability to craft malicious wireless frames to read or write out-of-bounds memory, potentially leading to information disclosure or denial of service. While no CVSS score, EPSS data, or active exploitation reports are currently documented, the vulnerability has been patched across multiple stable Linux kernel branches as indicated by four distinct commit references.
This vulnerability is a race condition in the Linux kernel's PCI Designware endpoint driver where MSI-X interrupt writes to the host can complete after the corresponding Address Translation Unit (ATU) entry is unmapped, potentially corrupting host memory or triggering IOMMU errors. The vulnerability affects all Linux kernel versions with the vulnerable code path in the PCI DWC endpoint implementation (cpe:2.3:a:linux:linux:*:*:*:*:*:*:*:*), specifically impacting systems using PCI endpoint devices with MSI-X interrupt support such as NVMe-PCI endpoint function drivers. An attacker with the ability to trigger high-frequency MSI-X interrupts from a malicious endpoint device could exploit this race condition to cause denial of service through IOMMU faults or potentially corrupt host memory.
A stack-out-of-bounds write vulnerability exists in the Linux kernel's BPF devmap implementation where the get_upper_ifindexes() function iterates over upper network devices without properly validating buffer bounds. An attacker with the ability to create multiple virtual network devices (e.g., more than 8 macvlans) and trigger XDP packet processing with BPF_F_BROADCAST and BPF_F_EXCLUDE_INGRESS flags can write beyond allocated stack memory, potentially causing denial of service or arbitrary code execution. The vulnerability affects all Linux kernel versions using the vulnerable devmap code path and has been patched across multiple stable kernel branches, indicating recognition as a real security concern requiring immediate updates.
This vulnerability is a speculative execution safety flaw in the Linux kernel's x86 FRED (Flexible Return and Event Delivery) interrupt handling code where array_index_nospec() is incorrectly positioned, allowing speculative memory predictions to leak sensitive information through side-channel attacks. The vulnerability affects all Linux kernel versions with FRED support (primarily x86-64 systems with newer Intel/AMD processors). An attacker with local access could potentially infer sensitive kernel memory values through timing or covert channel attacks exploiting the unsafe speculation window.
Use-after-free in Linux kernel's netfilter nft_set_pipapo enables local privilege escalation to kernel-level access (confidentiality/integrity/availability compromise). Affects Linux kernel 5.6+ through multiple stable branches (6.1.x, 6.6.x, 6.12.x, 6.18.x, 6.19.x). Vendor patches available across all affected kernel series. EPSS score of 0.03% (9th percentile) indicates low automated exploitation likelihood, consistent with local-access requirement and lack of public exploit code at time of analysis.
A resource management vulnerability exists in the Linux kernel's DRM/XE (Intel Graphics Execution Manager) queue initialization code where the finalization function is not called when execution queue creation fails, leaving the queue registered in the GuC (GPU Unified Compute) list and potentially causing invalid memory references. This affects all Linux kernel versions containing the vulnerable DRM/XE driver code. The vulnerability could lead to memory corruption or system instability when an exec queue creation failure occurs, though exploitation would require local kernel code execution capability or ability to trigger queue creation failures.
A use-after-free vulnerability exists in the Linux kernel's crypto subsystem (CCP driver) within the sev_tsm_init_locked() function error path, where a pr_err() statement dereferences freed memory to access structure fields t->tio_en and t->tio_init_done after kfree(t) has been executed. This vulnerability can lead to information disclosure by reading freed memory contents. The issue affects Linux kernel versions across distributions using the affected CCP crypto driver code and was identified by the Smatch static analyzer.
A memory corruption vulnerability exists in the Linux kernel's XDP (eXpress Data Path) subsystem where negative tailroom calculations are incorrectly reported as large unsigned integers, allowing buffer overflows during tail growth operations. This affects Linux kernel versions across multiple stable branches when certain Ethernet drivers (notably ixgbevf) report incorrect DMA write sizes, leading to heap corruption, segmentation faults, and general protection faults as demonstrated in the xskxceiver test utility. The vulnerability has no CVSS score assigned and shows no active KEV exploitation status, but represents a critical memory safety issue affecting systems using XDP with affected Ethernet drivers.
Use-after-free in Linux kernel network traffic control subsystem allows local authenticated attackers to execute arbitrary code with high privileges when changing network queue pair configurations on lockless qdiscs (virtio-net confirmed affected). Race condition between qdisc_reset_all_tx_gt() and dequeue operations causes memory to be freed while still in use. Vendor-released patches available for stable kernel branches 6.1.167, 6.6.130, 6.12.77, 6.18.17, 6.19.7, and mainline 7.0-rc3. EPSS exploitation probability is low (0.02%, 7th percentile) and no active exploitation confirmed at time of analysis, though a reliable reproducer exists using iperf3 and ethtool queue manipulation.
Use-after-free in Linux kernel cfg80211 WiFi subsystem allows local authenticated users with low privileges to achieve high impact on confidentiality, integrity, and availability through rfkill work-queue exploitation. The vulnerability affects Linux kernel versions 2.6.31 through 6.19-rc2, with patches released for stable branches 6.1.167, 6.6.130, 6.12.77, 6.18.17, 6.19.7, and 7.0-rc2. EPSS score of 0.02% (7th percentile) indicates very low probability of mass exploitation. No CISA KEV listing or public exploit identified at time of analysis, though the issue was discovered via syzkaller fuzzing, demonstrating automated exploit development potential.
A buffer over-read vulnerability exists in the Linux kernel's CXL mailbox command handler where the cxl_payload_from_user_allowed() function casts and dereferences user-supplied payload data without first validating its size. An unprivileged local attacker can send a raw mailbox command with an undersized payload (e.g., 1 byte instead of the expected 16 bytes for CXL_MBOX_OP_CLEAR_LOG) to trigger a kernel memory read past the allocated buffer, causing a KASAN splat and potential denial of service. While not yet listed in the KEV catalog or with public EPSS/CVSS scoring, patch commits are available in the Linux stable kernel repositories, indicating the vulnerability has been resolved upstream.
This vulnerability is a memory leak in the Linux kernel's AF_XDP socket implementation where buffers fail to be properly returned to the free list due to improper list node reinitialization. The vulnerability affects all Linux kernel versions with the AF_XDP subsystem enabled, potentially allowing local attackers or unprivileged users to exhaust kernel memory over time. While not actively exploited in the wild according to available intelligence, the vulnerability has clear patches available in stable kernel branches and represents a real denial-of-service risk for systems relying on XDP functionality.
An out-of-bounds (OOB) memory access vulnerability exists in the Linux kernel's MediaTek MT7996 WiFi driver (mt76) within the mt7996_mac_write_txwi_80211() function. The vulnerability occurs when the function accesses management frame fields without first validating the frame length, potentially allowing information disclosure or denial of service on systems using affected MT7996 hardware. Multiple stable kernel patches are available across several kernel versions, indicating the issue has been actively remediated in the upstream Linux project.
The Apple Silicon SMC hwmon driver (macsmc-hwmon) in the Linux kernel contains critical memory safety bugs in sensor population and float conversion logic. Specifically, voltage sensors are incorrectly registered to the temperature sensor array, and float-to-32-bit conversion has flawed exponent handling, potentially leading to out-of-bounds memory access, data corruption, or incorrect fan control on affected Apple Silicon systems. The vulnerability affects Linux kernel versions with the macsmc-hwmon driver and has been patched; no active exploitation or POC is currently known, but the nature of the bugs suggests high real-world risk for systems relying on thermal management.
A use-after-free and list corruption vulnerability exists in the Linux kernel's IPMI (Intelligent Platform Management Interface) subsystem when the SMI sender returns an error. The vulnerability affects all Linux kernel versions with the vulnerable IPMI code path, allowing local attackers or processes with IPMI access to trigger denial of service conditions through list corruption and NULL pointer dereferences. The vulnerability is not currently listed in CISA's KEV catalog, and no CVSS or EPSS scores have been published; however, the technical nature indicates high reliability for exploitation by local actors with kernel interface access.
A use-after-free (UAF) vulnerability exists in the Linux kernel's BPF subsystem within the bpf_trampoline_link_cgroup_shim function, where a race condition allows a process to reference memory after it has been freed. An attacker with CAP_BPF or CAP_PERFMON capabilities can trigger this vulnerability to cause a kernel crash (denial of service). A proof-of-concept has been demonstrated by the reporter, showing the bug can be reliably reproduced; the vulnerability is not listed on the CISA KEV catalog but affects all Linux kernel versions until patched.
A descriptor validation bypass in the Linux kernel's ALSA USB audio subsystem allows malicious USB devices to provide truncated UAC3 (USB Audio Class 3) header descriptors that escape validation checks, potentially causing out-of-bounds memory reads. The vulnerability stems from an incorrect protocol version constant (UAC_VERSION_2 instead of UAC_VERSION_3) in the validator table, causing validation logic to never execute for actual UAC3 devices. Affected are all Linux kernel versions containing the vulnerable code path; while CVSS and EPSS scores are not provided, this is a local privilege escalation / denial of service vector requiring physical USB device access or local code execution capability to exploit.
A logic error in the Linux kernel's drm/vmwgfx driver causes the vmw_translate_ptr functions to return success when pointer lookups actually fail, because the error handling was not updated when the underlying lookup function's return mechanism changed from returning a pointer to returning an error code with pointer as an out parameter. This allows uninitialized pointer dereferences and out-of-bounds memory access when the functions incorrectly report success, potentially enabling information disclosure or privilege escalation via the VMware graphics driver.
An out-of-bounds (OOB) memory access vulnerability exists in the Linux kernel's mt76 WiFi driver, specifically in the mt76_connac2_mac_write_txwi_80211() function which fails to validate frame length before accessing management frame fields. This affects all Linux kernel versions containing the vulnerable mt76 driver code and could allow an attacker to read sensitive kernel memory or trigger a denial of service through a specially crafted WiFi management frame. The vulnerability has been patched across multiple stable kernel branches with fixes available since the issue was identified.
A use-after-free vulnerability exists in the Linux kernel's pm8001 SCSI driver where the pm8001_queue_command() function incorrectly returns -ENODEV after already freeing a SAS task, causing the upper-layer libsas driver to attempt a second free operation. This affects all Linux kernel versions with the vulnerable pm8001 driver code, and while not remotely exploitable by default, it can lead to kernel memory corruption and denial of service on systems using PM8001-compatible SCSI controllers. No CVSS score, EPSS data, or active KEV status is currently available, but multiple stable kernel patches have been released across multiple branches.
Out-of-bounds memory access in the Linux kernel's accel/rocket DRM driver allows local authenticated users to trigger denial of service and potential information disclosure during probe failure paths. The flaw stems from improper error unwinding in rocket_probe() when rocket_core_init() fails (notably on EPROBE_DEFER), leaving stale counter state that subsequent code dereferences out of bounds. No public exploit identified at time of analysis, and EPSS scores exploitation likelihood at 0.02% (4th percentile), consistent with a hardware-driver-specific issue requiring local access.
This vulnerability is a race condition in the Linux kernel's BPF devmap subsystem that occurs on PREEMPT_RT kernels, where per-CPU bulk queue structures can be accessed concurrently by multiple preemptible tasks on the same CPU. An attacker or unprivileged local process can trigger use-after-free, double-free, or memory corruption conditions by crafting specific XDP (eXpress Data Path) redirect operations that cause concurrent access to shared queue structures, potentially leading to kernel crashes, information disclosure, or privilege escalation. The vulnerability affects all Linux kernel versions with the vulnerable devmap code path and has been patched upstream, though CVSS and EPSS scores are not yet assigned and no public exploit or KEV status is currently documented.
An out-of-bounds memory write vulnerability exists in the Linux kernel's AMD XDNA accelerator driver (accel/amdxdna) where a memset() operation clears a command header before validating sufficient space is available in the command slot, potentially leading to memory corruption. The vulnerability affects Linux kernel versions across multiple releases where the amdxdna driver is present and enabled. An attacker with local access and appropriate capabilities to interact with the amdxdna device could trigger this memory corruption to achieve denial of service or potentially escalate privileges.
Use-after-free in the Linux kernel's libertas wireless driver (lbs_free_adapter()) allows local privileged users to corrupt memory when a timer callback races with adapter teardown. The flaw stems from using non-synchronous timer_delete() instead of timer_delete_sync() on command_timer and tx_lockup_timer, leaving callbacks free to dereference freed driver_lock, cur_cmd, and dev fields. EPSS is very low (0.02%, 7th percentile) and there is no public exploit identified at time of analysis, but the bug has existed since the driver's introduction and on stable trees through 6.18.x.
A size calculation overflow vulnerability exists in the Linux kernel's accel/amdxdna driver that can result in undersized buffer allocations and potential memory corruption. The vulnerability affects Linux kernel versions across multiple branches where the AMD XDNA accelerator driver is compiled. An attacker with local access could exploit this to trigger memory corruption, potentially leading to denial of service or privilege escalation, though exploitation complexity and attack surface requirements remain moderate.
Xen privcmd driver in Linux kernel allows root processes in unprivileged guest VMs to bypass secure boot protections by issuing arbitrary hypercalls that modify kernel memory. This Xen Security Advisory (XSA-482) affects Linux kernels running as Xen domU guests with secure boot enabled. The vulnerability is addressed in kernel patches 6.1.167, 6.6.130, 6.12.78, 6.18.20, and 6.19.10. EPSS score of 0.03% (9th percentile) indicates low probability of widespread exploitation. No active exploitation confirmed at time of analysis; POC status unknown.
A resource management flaw in the Linux kernel's netfilter nf_tables subsystem fails to properly iterate over all pending catchall elements during transaction processing, leading to incomplete cleanup when a map holding catchall elements is destroyed. This affects Linux kernel versions across multiple stable branches and can result in memory corruption, information disclosure, or denial of service when crafted netfilter rule transactions are processed. The vulnerability is not known to be actively exploited in the wild, but the presence of multiple stable branch patches and specific affected kernel versions indicates kernel maintainers have treated this as a material flaw requiring coordinated remediation.
A race condition exists in the Linux kernel's io_uring subsystem where task work flags can be manipulated on stale ring memory during concurrent ring resize operations when DEFER_TASKRUN or SETUP_TASKRUN modes are enabled. This vulnerability affects Linux kernel versions including 6.13, 6.18.19, 6.19.9, and 7.0-rc4, and could allow an attacker with local code execution capabilities to cause information disclosure or kernel memory corruption. The vulnerability has been patched across multiple stable kernel versions as evidenced by available git commits, though no active KEV status or EPSS score has been published.
Linux kernel netfilter xt_IDLETIMER subsystem crashes when revision 0 rules reuse ALARM-type timer labels created by revision 1, triggering mod_timer() on an uninitialized timer_list. Affects Linux kernel 5.7+ through 6.19.x series. Local authenticated attackers with CAP_NET_ADMIN (PR:L) can cause kernel panic on systems with panic_on_warn=1, achieving high-severity local denial of service or potential privilege escalation via kernel memory corruption. EPSS score is very low (0.02%, 4th percentile) indicating minimal observed exploitation likelihood. No public exploit code identified at time of analysis.
A use-after-free race condition exists in the Linux kernel's macvlan driver within the macvlan_common_newlink() error handling path. When a macvlan device creation fails after the network device becomes visible to the RCU (Read-Copy-Update) subsystem, the caller's subsequent free_netdev(dev) can race with ongoing packet forwarding operations, causing kernel memory corruption and potential information disclosure. This vulnerability affects Linux kernel versions 5.10 through 6.19 and later, and while no public exploit exists, the issue is reproducible via crafted netlink commands that trigger concurrent device creation and packet transmission.
A use-after-free vulnerability exists in the Linux kernel's netfilter nf_tables subsystem where a set element can be published and removed without waiting for RCU grace period completion, allowing concurrent RCU readers to access freed memory. This affects all Linux kernel versions across multiple stable branches (4.10 and later) as indicated by the CPE cpe:2.3:a:linux:linux:*:*:*:*:*:*:*:*. An attacker with local access to manipulate netfilter rules could trigger information disclosure or denial of service by exploiting the race condition during batch insertion of elements into a full netfilter set.
A race condition exists in the Linux kernel's perf subsystem where __perf_event_overflow() can execute with only preemption disabled (rather than IRQs disabled) on software events, creating a window for concurrent execution with perf_event_exit_event() and related cleanup functions. This race condition allows the overflow handler to access kernel structures (such as BPF programs) that are being freed concurrently, potentially leading to use-after-free conditions, memory corruption, or privilege escalation. The vulnerability affects multiple stable Linux kernel versions and has patches available across multiple kernel branches (6.12.77, 6.19.7, 7.0-rc2, and others as indicated by the git commit references).
Use-after-free in Linux kernel traffic control (net/sched) occurs when act_ct action returns TC_ACT_CONSUMED while a packet is held by the defragmentation engine, allowing local authenticated attackers with low privileges to achieve code execution, denial of service, or information disclosure. Affects Linux kernel 6.8 through 6.12.x and 6.18.x series. Vendor patches available across multiple stable branches (commits 524ce8b4, 380ad8b7, 9deda0fc, 11cb63b0). EPSS score of 0.02% (4th percentile) indicates very low observed exploitation likelihood despite 7.8 CVSS rating. No active exploitation confirmed; not listed in CISA KEV.
Out-of-bounds read in Linux kernel's AppArmor subsystem allows local authenticated attackers to disclose kernel memory and potentially crash the system via maliciously crafted security policies. Affects Linux kernels from 3.4 onwards with patches released for stable branches 6.12.77, 6.18.18, 6.19.8, and 7.0-rc4. No active exploitation confirmed (not in CISA KEV), EPSS probability low at 0.02%, but Ubuntu rates priority as medium with patches deployed across 729 releases. Requires local access with low privileges (PR:L) and ability to load AppArmor policies.
Local privilege escalation in Linux kernel AppArmor allows low-privilege users to manipulate security policy via confused deputy attack. Attackers pass file descriptors for apparmorfs interfaces to privileged processes, enabling full policy management capabilities including disabling confinement and bypassing user namespace restrictions. Publicly available exploit code exists. EPSS score 0.01% suggests low widespread exploitation probability. Patches released for kernel 6.12.77, 6.18.18, 6.19.8, and 7.0-rc4 with multiple distribution advisories available.
Linux kernel DVB digital video recorder driver allows local authenticated users to trigger use-after-free conditions via stale waitqueue entries, potentially achieving privilege escalation to root or causing kernel crashes. The vulnerability stems from improper waitqueue reinitialization when reopening DVR devices, orphaning existing epoll/io_uring poll entries. Affects Linux kernel versions from 2.6.17 through 6.19.6, with patches available in 6.12.77, 6.18.17, 6.19.7, and 7.0-rc2. EPSS score of 0.02% (4th percentile) indicates low observed exploitation activity, though CVSS 7.8 reflects high impact if local access is obtained.
A race condition in the Linux kernel's perf_mmap() function creates a use-after-free vulnerability when concurrent threads attempt to access a ring buffer during failed memory mapping operations. The vulnerability affects Linux kernel versions across 6.18.17, 6.19.7, and 7.0-rc2, allowing a local attacker with standard user privileges to trigger refcount saturation warnings and potential kernel crashes via denial of service. This issue was discovered by Syzkaller fuzzing and has patches available across multiple stable kernel branches.
A stack out-of-bounds write vulnerability exists in the Linux kernel's mac80211 WiFi subsystem in the ieee80211_ml_reconfiguration function, where the link_id parameter extracted from the ML Reconfiguration element is not properly bounds-checked before being used as an array index. The vulnerability affects Linux kernel versions across multiple release branches (6.5 through 7.0-rc2), allowing an attacker with network proximity to craft a malicious WiFi frame to trigger a buffer overflow and potentially cause denial of service or code execution. While no CVSS score or EPSS data is currently published, the vulnerability has been assigned EUVD-2026-12809 and patches are available across stable kernel branches.
Race condition in Linux kernel's Traffic Control act_gate scheduler allows local authenticated users to trigger memory corruption and potentially execute arbitrary code or cause denial of service. Affects Linux kernel 5.8+ through 6.19.x and 7.0-rc3. Vulnerability arises when concurrent gate action replacement occurs during hrtimer callback or dump operations, creating a use-after-free scenario. No active exploitation confirmed (EPSS 0.02%, not in CISA KEV). Vendor patches available across multiple stable branches including 6.18.18, 6.19.8, and 7.0-rc3.
A memory allocation vulnerability exists in the Linux kernel's NVMe Persistent Reservation implementation where the nvme_pr_read_keys() function fails to properly handle large num_keys values passed from userspace, resulting in excessive memory allocation attempts up to 4MB that trigger page allocator warnings and potential denial of service. This affects Linux kernel versions across multiple stable branches (6.5, 6.12.77, 6.18.17, 6.19.7, and 7.0-rc3) and requires local access with ioctl privileges to trigger. The vulnerability is addressed through replacement of kzalloc() with kvzalloc() to support larger allocations via vmalloc fallback, and patches are available across multiple kernel stable branches.
A negative integer underflow vulnerability exists in the Linux kernel's RDMA/umad subsystem where the ib_umad_write function fails to validate user-controlled data_len calculations, allowing a mismatch between user MAD header size and RMPP header length to produce negative values. This negative data_len can propagate to ib_create_send_mad() and trigger an out-of-bounds memset in alloc_send_rmpp_list(), causing kernel memory corruption and denial of service. The vulnerability affects Linux kernel versions from 2.6.24 through multiple stable branches (5.10, 5.15, 6.1, 6.6, 6.12, 6.18, 6.19) and requires local access to RDMA user-mode interface to exploit, with patches available across multiple stable kernel versions as referenced in the git commits.
A null pointer dereference vulnerability exists in the Linux kernel's RDMA/siw (Software iWARP) module in the TCP receive data path handler. When siw_get_hdr() returns an error before initializing the receive FPDU context, the error handling code attempts to dereference qp->rx_fpdu without null checking, potentially causing a kernel panic and denial of service. The vulnerability affects multiple Linux kernel versions across stable branches (5.10, 5.15, 6.1, 6.6, 6.12, and others) and has been patched across numerous kernel releases.
In the Linux kernel, the following vulnerability has been resolved: tls: Fix race condition in tls_sw_cancel_work_tx() This issue was discovered during a code audit.
In the Linux kernel, the following vulnerability has been resolved: espintcp: Fix race condition in espintcp_close() This issue was discovered during a code audit.
High severity vulnerability in ImageMagick. A stack buffer overflow exists in ImageMagick's morphology kernel parsing functions. User-controlled kernel strings exceeding a buffer are copied into fixed-size stack buffers via memcpy without bounds checking, resulting in stack corruption.