Denial of Service

A use-after-free vulnerability exists in the Linux kernel's netfilter nft_set_pipapo (Pipelined Packet Processing) set type garbage collection mechanism. The vulnerability allows local attackers to trigger denial of service through soft lockup warnings and RCU stall reports by creating a large number of expired elements that trigger prolonged, non-preemptible garbage collection operations. The affected product is the Linux kernel across all versions, with patches available in the stable series via multiple commit references.

A NULL pointer dereference vulnerability exists in the Linux kernel's HID pidff (PID force feedback) driver due to incomplete clearing of conditional effect bits from the ffbit field. This affects all Linux kernel versions using the vulnerable pidff driver code. An attacker with local access to a system with a connected force feedback HID device could trigger a kernel panic, causing a denial of service. No CVSS score, EPSS score, or active KEV status is currently available, but three stable kernel commits addressing this issue have been merged, indicating the vulnerability has been formally patched.

A race condition exists in the Linux kernel's CXL (Compute Express Link) subsystem where the nvdimm_bus object can be invalidated while orphaned nvdimm objects attempt to reprobe, leading to a NULL pointer dereference in kobject_get() during device registration. This affects Linux kernels with CXL support enabled, allowing a local attacker or system administrator to trigger a kernel panic (denial of service) through module unload/reload sequences or specific timing during CXL ACPI probe operations. No active exploitation in the wild has been reported, but the vulnerability is easily reproducible via the cxl-translate.sh unit test with minimal timing manipulation.

A use-after-free vulnerability exists in the Linux kernel's CAN USB f81604 driver where URBs submitted in the read bulk callback are not properly anchored before submission, potentially allowing them to be leaked if usb_kill_anchored_urbs() is invoked. This affects all Linux kernel versions with the vulnerable f81604 driver code. An attacker with local access or control over a malicious USB CAN adapter could potentially trigger memory corruption or information disclosure by causing URB leaks during driver cleanup or device disconnection.

A memory protection vulnerability exists in the Linux kernel's ARM64 Guarded Control Stack (GCS) implementation when FEAT_LPA2 (52-bit virtual addressing) is enabled. The vulnerability occurs because GCS page table entries incorrectly use the PTE_SHARED bits (0b11) in positions that are repurposed for high-order address bits when LPA2 is active, causing page table corruption and kernel panics during GCS memory operations. This affects all Linux kernel versions with GCS support on ARM64 systems with LPA2 enabled, and while no active exploitation or public POC has been reported, the vulnerability causes immediate kernel crashes when GCS is enabled on affected hardware configurations.

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.

A race condition exists in the Linux kernel's eBPF CPU map implementation on PREEMPT_RT systems, where concurrent access to per-CPU packet queues can cause memory corruption and kernel crashes. This vulnerability affects Linux kernel versions across multiple branches and can be triggered by tasks running on the same CPU, potentially allowing local denial of service or information disclosure. A proof-of-concept has been made available via syzkaller, and patches have been released through the official Linux kernel stable repositories.

A null pointer dereference vulnerability exists in the Linux kernel's AMD XDNA accelerator driver (accel/amdxdna) that can cause a kernel crash when userspace attempts to destroy a hardware context that has been automatically suspended. The vulnerability affects all Linux kernel versions with the vulnerable amdxdna driver code path; an unprivileged local user with access to the driver's ioctl interface can trigger a denial of service by issuing a destroy context command on a suspended context, causing the kernel to crash when accessing a NULL mailbox channel pointer. No CVSS score, EPSS data, or KEV status is currently available, but the vulnerability is classified as a denial of service with straightforward triggering conditions.

This vulnerability allows userspace applications to trivially trigger kernel warning backtraces in the AMD GPU (amdgpu) driver's user queue (userq) implementation by passing intentionally small num_fences values or exploiting legitimate growth between successive ioctl calls. While not a traditional security vulnerability enabling code execution or data theft, it constitutes an information disclosure issue through kernel log pollution and denial-of-service potential via warning spam. The Linux kernel across all versions utilizing the affected amdgpu userq code path is impacted, though the actual attack surface is limited to systems with AMD GPUs and unprivileged users with access to the amdgpu device interface.

A memory leak vulnerability exists in the Linux kernel's pinctrl subsystem within the pinconf_generic_parse_dt_config() function. When the parse_dt_cfg() function fails, the code returns directly without executing cleanup logic, causing the cfg buffer to be leaked. This affects all Linux kernel versions containing the vulnerable pinctrl-generic code, and while the vulnerability itself does not enable direct code execution, it can lead to denial of service through memory exhaustion over time as the kernel gradually loses available memory.

A buffer handling vulnerability exists in the Linux kernel's CAN USB f81604 driver where improperly sized interrupt URB (USB Request Block) messages are not validated before processing, potentially leading to information disclosure or memory corruption. All Linux kernel versions with the affected CAN f81604 USB driver are impacted. An attacker with physical access to a malicious USB device or local system access could trigger abnormal URB message handling to leak kernel memory or cause denial of service. This vulnerability is not currently listed as actively exploited in known vulnerability databases, and no public proof-of-concept has been widely circulated, though patches are available across multiple kernel stable branches.

A validation bypass vulnerability exists in the Linux kernel's netfilter nft_set_rbtree module that fails to properly validate overlapping open intervals in packet filtering rule sets. This affects all Linux distributions running vulnerable kernel versions, allowing local or remote attackers with network configuration privileges to bypass firewall rules through malformed interval specifications. The vulnerability is classified as an information disclosure issue and has been patched upstream, though no active exploitation in the wild has been documented.

A NULL pointer dereference vulnerability exists in the Linux kernel's intel_pstate CPU frequency scaling driver that crashes the system when turbo boost is disabled on systems with CPU count limitations. This affects Linux kernel versions across multiple releases where the system is booted with 'nosmt' or 'maxcpus' kernel parameters and a user or administrator attempts to disable turbo via sysfs. An unprivileged local attacker with write access to /sys/devices/system/cpu/intel_pstate/no_turbo can trigger a kernel panic, resulting in denial of service. The vulnerability has been patched and fixes are available across multiple stable kernel branches.

A resource management vulnerability in the Linux kernel UDP implementation causes improper handling of socket state during disconnect operations. When a UDP socket is bound to a wildcard address, connected to a remote peer, and then disconnected, the kernel fails to properly remove the socket from the 4-tuple hash table, leaving stale entries that can lead to information disclosure or denial of service conditions. All Linux kernel versions using the affected UDP code path are impacted, with patches available through the Linux kernel stable tree.

A memory leak vulnerability exists in the Linux kernel's NFC (Near Field Communication) NCI subsystem where pending data exchange operations are not properly completed when a device is closed, causing socket references to be held indefinitely. This affects all Linux kernel versions with the vulnerable NFC NCI code path. An attacker with local access to NFC functionality could trigger repeated device close operations to exhaust memory resources, leading to denial of service. While no CVSS score or EPSS data is currently available, the issue is being actively addressed through kernel patches as evidenced by multiple commit references.

A null pointer dereference vulnerability exists in the Linux kernel's libie firmware logging module where the libie_fwlog_deinit() function attempts to unroll firmware logging structures even when logging was never properly initialized, causing kernel panics during driver unload. This affects the ixgbe driver and potentially other devices using the libie_fwlog module across multiple Linux kernel versions. An unprivileged local attacker with module unload capabilities can trigger a denial of service by unloading the affected driver, as demonstrated through rmmod operations in recovery mode.

A NULL pointer dereference vulnerability exists in the Linux kernel's AMD XDena accelerator driver (accel/amdxdna) where the mgmt_chann variable may be set to NULL if firmware returns an unexpected error during management message transmission, subsequently causing a kernel crash when aie2_hw_stop() attempts to access it. This affects Linux kernel versions across the amdxdna subsystem and can be exploited by local attackers with physical access or through malicious firmware to trigger a denial of service condition. Two stable kernel patches are available that introduce proper NULL checks and a dedicated helper function to safely destroy mgmt_chann.

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.

A resource leak vulnerability exists in the Linux kernel's ETAS ES58X USB CAN driver where URBs (USB Request Blocks) submitted in the read bulk callback are not properly anchored before submission, potentially causing memory leaks when usb_kill_anchored_urbs() is invoked. This affects all Linux kernel versions running the etas_es58x driver. An attacker with local access to trigger device disconnection or system shutdown could cause kernel memory exhaustion through repeated URB leaks, leading to denial of service or information disclosure of kernel memory contents.

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 logic error in the Linux kernel's MPTCP (MultiPath TCP) path management subsystem fails to properly track endpoint usage state when an endpoint is configured with both 'signal' and 'subflow' flags and subsequently removed. This causes a kernel warning and potential state inconsistency in the MPTCP connection management code. The vulnerability affects Linux kernel versions and is triggered through netlink socket manipulation by unprivileged users, potentially leading to denial of service or unexpected kernel behavior.

A lifecycle management vulnerability in the Linux kernel's USB NCM (Network Control Model) gadget function causes the network device to outlive its parent gadget device, resulting in NULL pointer dereferences and dangling sysfs symlinks when the USB gadget is disconnected. This affects all Linux kernel versions with the vulnerable USB gadget NCM implementation, and an attacker with local access to trigger USB gadget bind/unbind cycles can cause a kernel panic (denial of service). No CVSS vector, EPSS score, or active KEV status is available, but patches are confirmed available in the Linux stable tree.

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 memory alignment fault vulnerability exists in the Linux kernel's IPv4 multipath routing hash seed implementation that causes kernel panics on ARM64 systems when compiled with Clang and Link Time Optimization (LTO) enabled. The vulnerability affects all Linux kernel versions with the vulnerable code path in net/ipv4/route.c, specifically impacting ARM64 architectures where strict alignment requirements for Load-Acquire instructions are enforced. An attacker with local access or ability to trigger multipath hash operations could cause a denial of service by crashing the kernel, though no active exploitation has been reported in the wild.

A device node reference leak exists in the Linux kernel's bq257xx regulator driver within the bq257xx_reg_dt_parse_gpio() function. When the function fails to retrieve a subchild device node, it returns prematurely without properly releasing the reference via of_node_put(child), causing a memory leak. This affects all Linux kernel versions containing this vulnerable code path in the bq257xx regulator driver, and while not directly exploitable for code execution, the memory leak can be triggered repeatedly to degrade system stability and availability.

A preempt count leak exists in the Linux kernel's i40e network driver within the napi poll tracepoint implementation, where get_cpu() is called without a corresponding put_cpu() to restore the preempt count. This affects all Linux kernel versions containing the vulnerable i40e driver code and can cause kernel accounting errors and potential system instability when the tracepoint is enabled. The vulnerability has no known active exploitation or public proof-of-concept code, and while not formally scored with CVSS, it represents a moderate kernel reliability issue that has persisted undetected for over three years.

The Linux kernel's kaweth USB driver fails to validate that probed USB devices have the expected number and types of endpoints before binding to them, allowing a malicious or malformed USB device to cause a kernel crash when the driver blindly accesses non-existent endpoints. This denial-of-service vulnerability affects Linux kernel versions across multiple stable branches and can be triggered by any user with the ability to connect a crafted USB device to a system running the vulnerable kernel. While CVSS and EPSS scores are not available, the vulnerability represents a straightforward crash vector with no reported active exploitation but patches are available across multiple kernel versions.

A NULL pointer dereference vulnerability exists in the Linux kernel's event tracing subsystem, specifically in the trigger_data_free() function which fails to validate NULL pointers before dereferencing the data->cmd_ops field. This affects all Linux kernel versions where the vulnerable tracing code is present, and can be exploited by local attackers with appropriate privileges to cause a denial of service through kernel panic. The vulnerability was discovered through automated code review rather than active exploitation in the wild, and patches have been committed to stable kernel branches.

A warning trace vulnerability exists in the Linux kernel's pinctrl equilibrium driver where the eqbr_irq_mask_ack() callback function incorrectly calls both eqbr_irq_mask() and eqbr_irq_ack(), causing gpiochip_disable_irq() to be invoked twice and generating spurious kernel warnings on every GPIO during driver load. All Linux kernel versions with the affected equilibrium pinctrl driver are impacted, though this is primarily a kernel stability and logging issue rather than a security vulnerability. The issue has been resolved in multiple stable kernel branches as evidenced by the five stable commit hashes referenced, indicating patches are available.

A buffer overflow vulnerability exists in the Linux kernel's EMS USB CAN driver (ems_usb) in the ems_usb_read_bulk_callback() function, where the driver fails to properly validate USB message lengths before parsing and copying data. An attacker with the ability to supply a malicious USB device or intercept USB communications could trigger a buffer overflow by providing specially crafted messages that exceed the expected message boundaries, potentially leading to kernel memory corruption, denial of service, or privilege escalation. No CVSS score, EPSS risk rating, or active exploitation data (KEV status) is currently available, though multiple stable kernel branches have received patches indicating vendor awareness of the issue's severity.

A memory safety vulnerability exists in the Linux kernel's accel/rocket driver where the error path in rocket_probe() fails to properly unwind resource allocations when rocket_core_init() fails, particularly during EPROBE_DEFER scenarios. This affects all Linux kernel versions containing the vulnerable accel/rocket driver code. An attacker with local access could trigger a probe failure condition to cause out-of-bounds memory accesses, potentially leading to denial of service or privilege escalation.

A NULL pointer dereference vulnerability exists in the Linux kernel's IPv6 routing code within the ip6_rt_get_dev_rcu() function, triggered when a slave device is being un-slaved from a Virtual Routing and Forwarding (VRF) context. The vulnerability affects all Linux kernel versions with the affected code path and can be exploited to cause a kernel panic and denial of service. This issue was introduced by commit 4832c30d5458 which removed the fallback to loopback device handling, and multiple stable kernel branches have received patches to restore the NULL pointer check and fallback logic.

A kernel panic vulnerability exists in Linux IPv6 nexthop handling where standalone IPv6 nexthop objects created with loopback devices are misclassified as reject routes, causing the nhc_pcpu_rth_output field to remain unallocated. When an IPv4 route subsequently references this nexthop, a NULL pointer dereference in __mkroute_output() triggers a kernel panic, resulting in denial of service. All Linux kernel versions with IPv6 nexthop support are affected, and the vulnerability is remotely triggerable by unprivileged users with network configuration capabilities.

This vulnerability is a memory leak in the Linux kernel's Bluetooth subsystem where Socket Buffers (SKBs) queued into the sk_error_queue for TX timestamping are not properly purged during socket destruction, allowing sensitive timestamp data to persist in kernel memory. The vulnerability affects all Linux kernel versions that support Bluetooth with SO_TIMESTAMPING enabled (cpe:2.3:a:linux:linux:*:*:*:*:*:*:*:*). An attacker with local access could potentially read leaked kernel memory contents including timestamp information that should have been cleaned up, or trigger the leak by unexpectedly removing the Bluetooth controller while timestamped packets remain queued.

A denial-of-service vulnerability exists in the Linux kernel's ucan (CAN-over-USB) driver where malformed USB messages with a zero-length field cause an infinite loop in the ucan_read_bulk_callback() function, hanging the entire system. An attacker with physical access to a USB port can connect a malicious or compromised CAN device to trigger this condition, rendering the affected system unresponsive. While no CVSS or EPSS scores are available, the vulnerability is confirmed as patched across multiple stable kernel branches with six commits addressing the issue.

A reference count leak in the Linux kernel's SCSI core subsystem causes the tagset_refcnt reference counter to fail to decrement properly, resulting in resource exhaustion and system hangs during SCSI host teardown. This affects all Linux kernel versions with the vulnerable code path, particularly impacting iSCSI configurations where the leak manifests as indefinite blocking in scsi_remove_host() calls. While not actively exploited in the wild (no KEV status), this is a denial-of-service vulnerability that can be triggered by any user with the ability to manage SCSI sessions or trigger host removal operations.

A deadlock vulnerability exists in the Linux kernel's AMD XDNA accelerator driver (accel/amdxdna) that occurs when an application issues a query IOCTL while the device is undergoing auto-suspend. The vulnerability affects all Linux distributions shipping the vulnerable kernel code. An attacker with local access to the system can trigger this deadlock by issuing query IOCTLs concurrently with power management events, causing a complete hang of the AMD XDNA accelerator subsystem and denial of service to legitimate applications. This vulnerability is not listed in the CISA KEV catalog and no public exploit code has been identified, but the fix has been integrated into the stable Linux kernel.

A NULL pointer dereference vulnerability exists in the Linux kernel's VXLAN implementation when IPv6 is disabled via the 'ipv6.disable=1' boot parameter. When an IPv6 packet is injected into a VXLAN interface, the route_shortcircuit() function attempts to call neigh_lookup() on an uninitialized nd_tbl (neighbor discovery table), causing a kernel panic and denial of service. This affects all Linux distributions shipping vulnerable kernel versions, and while no CVSS score or EPSS data is provided, the presence of six stable kernel commits and reproducible crash conditions indicates high practical impact.

A recursive locking vulnerability exists in the Linux kernel's target core configfs implementation where the target_core_item_dbroot_store() function attempts to open a file using filp_open() while already holding a semaphore (frag_sem) acquired in flush_write_buffer(), creating a deadlock condition when the same configfs file is accessed. This affects all Linux kernel versions with the vulnerable target subsystem code, and while no CVSS score or EPSS data is publicly available, the vulnerability has been resolved across multiple stable kernel branches with patch commits available in the kernel git repository, suggesting active acknowledgment of the issue as a legitimate kernel bug requiring remediation.

This vulnerability involves improper resource cleanup in the Linux kernel's NFC PN533 USB driver, where a reference count on the USB interface is not properly released when a device is disconnected. Affected systems include all Linux kernel versions with the vulnerable PN533 driver code, impacting any system using NFC devices based on the PN533 chipset. While this is a resource management issue rather than a direct memory corruption vulnerability, it can lead to information disclosure or denial of service through USB interface resource exhaustion over repeated device attach/detach cycles. The vulnerability has been resolved in the Linux kernel with multiple backported patches available across stable branches.

The pegasus USB network driver in the Linux kernel fails to validate that connected USB devices have the proper number and types of endpoints before binding to them, allowing a malicious USB device to trigger a kernel crash through null pointer dereference or out-of-bounds memory access. This denial-of-service vulnerability affects Linux kernel versions across multiple stable branches, as evidenced by patches applied to at least six different kernel maintenance branches. An attacker with physical access to a target system or the ability to inject a crafted USB device into the network could crash the kernel without authentication or elevated privileges, though no public exploit code or active exploitation in the wild has been reported.

This vulnerability is a resource leak in the Linux kernel's InfiniBand mthca driver within the mthca_create_srq() function, where the mthca_unmap_user_db() cleanup call is missing on the error path. A user with local access can trigger this leak by causing the mthca_create_srq() system call to fail, resulting in persistent kernel memory not being freed, which could lead to denial of service through memory exhaustion. While no CVSS score, EPSS value, or KEV status is documented, the issue affects all Linux kernel versions using the mthca driver and has been patched across multiple stable kernel branches as evidenced by six linked commit fixes.

A race condition in the SiFive PLIC (Platform Level Interrupt Controller) interrupt handling code can cause interrupts to become frozen when interrupt affinity is modified while an interrupt is being processed. The vulnerability affects Linux kernel implementations using the SiFive PLIC irqchip driver, potentially causing system hangs or device unresponsiveness on RISC-V systems. While not actively exploited in the wild, the issue is easily reproducible through concurrent affinity changes and high interrupt load, making it a practical denial-of-service concern for affected systems.

A null pointer dereference vulnerability exists in the Linux kernel's ATM LANE module (lec_arp_clear_vccs function) where multiple ARP entries can share the same virtual circuit connection (VCC). When a VCC is closed, the kernel iterates through ARP entries and clears associated VCC pointers; if multiple entries share the same VCC, the first iteration frees the vpriv structure and sets it to NULL, causing subsequent iterations to crash when attempting to dereference the now-NULL pointer. A local attacker can trigger this denial of service condition through crafted ATM socket operations, as demonstrated by existing syzkaller reproducers.

A null-pointer dereference vulnerability exists in the Linux kernel's DRBD (Distributed Replicated Block Device) subsystem when handling local read errors. When a READ_COMPLETED_WITH_ERROR event occurs in drbd_request_endio(), a NULL peer_device pointer is passed to the __req_mod() function, which then unconditionally dereferences it in drbd_set_out_of_sync(), causing a kernel panic or system crash. This affects all Linux kernel versions with the vulnerable DRBD code, and while not actively exploited in the wild, it can be triggered by a local user or administrator through normal disk I/O error conditions, resulting in denial of service.

A PM runtime reference leak exists in the Linux kernel's fp9931 regulator driver hwmon interface, where the pm_runtime_put_autosuspend() function fails to be called when regmap_read() encounters an error, causing the power management reference count to become unbalanced. This affects all Linux kernel versions with the vulnerable fp9931 driver code. While not directly exploitable for code execution, the reference leak can lead to device power management failures, potential denial of service through resource exhaustion, or unexpected device behavior in systems using the FP9931 regulator hardware.

An uninitialized variable vulnerability exists in the Linux kernel's SMB2 client implementation within the smb2_unlink() function, where failure of SMB2_open_init() or SMB2_close_init() operations (such as during reconnection) leaves iovs structures uninitialized. If subsequent cleanup functions like SMB2_open_free(), SMB2_close_free(), or smb2_set_related() attempt to operate on these uninitialized structures, the kernel will oops (crash), resulting in a denial of service condition affecting all Linux distributions and versions using affected kernel code.

A use-after-free vulnerability exists in the Linux kernel's Libertas wireless driver (libertas) in the lbs_free_adapter() function, where timer_delete() is incorrectly used instead of timer_delete_sync() for command_timer and tx_lockup_timer cleanup. If a timer callback is executing when the adapter is freed, the callback will access already-freed memory structures, potentially leading to information disclosure, denial of service, or privilege escalation. This vulnerability affects all Linux kernel versions that include the Libertas driver and has been resolved through multiple commits across stable kernel branches, indicating patches are available but not yet universally deployed.

A NULL pointer dereference vulnerability exists in the Linux kernel's mac80211 mesh networking subsystem (CVE-2026-23279), specifically in the mesh_rx_csa_frame() function which fails to validate the presence of the Mesh Channel Switch Parameters IE before dereferencing it. A remote attacker with an established mesh peer link can trigger a kernel panic by sending a crafted SPECTRUM_MGMT/CHL_SWITCH action frame that includes matching Mesh ID and configuration elements but omits the required Channel Switch Parameters IE. This vulnerability affects all Linux kernel versions since v3.13 (January 2014) and requires no special authentication beyond the default open mesh peering, making it a trivial denial-of-service vector against systems with mesh networking enabled.

Apple's iOS, iPadOS, macOS, tvOS, and watchOS contain a use-after-free vulnerability that could allow a local attacker to corrupt kernel memory or cause unexpected system crashes. An installed application can trigger this memory corruption flaw through user interaction, potentially leading to denial of service or unauthorized kernel-level modifications. No patch is currently available for this vulnerability (CVSS 7.1).

Denial-of-service attacks against multiple Apple platforms (iOS, iPadOS, macOS, tvOS, visionOS, and watchOS) result from improper null pointer handling that allows attackers in privileged network positions to crash affected systems. An attacker exploiting this CWE-476 vulnerability can render devices unavailable without user interaction. No patch is currently available, requiring users to apply mitigations until updates are released.

Unpatched denial-of-service vulnerability in Apple iOS and iPadOS allows unauthenticated remote attackers to crash applications due to insufficient input validation. The vulnerability requires no user interaction and affects all versions prior to 26.4, with no security patch currently available.

Apple's iOS, iPadOS, macOS, tvOS, visionOS, and watchOS contain a use-after-free vulnerability that could allow remote attackers to crash affected applications by processing maliciously crafted web content. The vulnerability stems from improper memory management and requires user interaction to exploit. No patch is currently available, leaving users vulnerable until official updates are released.

Denial of service in Apple iOS, iPadOS, and macOS due to a use-after-free memory corruption vulnerability allows local attackers to trigger unexpected system termination. The flaw affects multiple Apple platforms including iOS 18.x, macOS Sequoia, Sonoma, and Tahoe versions. No patch is currently available.

NATS.io nats-server WebSockets service is vulnerable to unbounded memory consumption when malicious unauthenticated clients connect and transmit large amounts of data. This denial-of-service vulnerability affects versions before v2.12.6 or v2.11.15 and has a moderate CVSS score of 5.3 (CWE-770: Allocation of Resources Without Limits or Throttling). Unlike the related CVE-2026-27571 compression bomb variant, this attack requires significant client-side bandwidth rather than algorithmic compression exploitation.

A pre-authentication vulnerability in NATS.io nats-server allows unauthenticated attackers to crash the server by sending a specially crafted malformed message to the leafnode port. All versions of nats-server prior to v2.12.6 and v2.11.15 are affected. This is a high-severity denial-of-service vulnerability with a CVSS score of 7.5, exploitable over the network without authentication, though no active exploitation (KEV) or public proof-of-concept has been reported at this time.

NATS server with leafnode clustering enabled is vulnerable to a denial-of-service crash triggered by remote attackers who exploit null pointer dereference in the compression negotiation handler prior to authentication. Any attacker capable of connecting to a leafnode-configured NATS server can trigger a server panic, causing service disruption. A patch is available to remediate this high-severity vulnerability.

NVIDIA Triton Inference Server contains a denial of service vulnerability in its HTTP endpoint that can be exploited by sending large compressed payloads. The vulnerability has a CVSS score of 7.5 (High) and is exploitable remotely without authentication or user interaction. There is no evidence of active exploitation (not in CISA KEV), and no public proof-of-concept has been identified at this time.

NVIDIA Triton Inference Server contains a race condition vulnerability (CWE-362) that allows unauthenticated remote attackers to corrupt internal server state, resulting in a denial of service. The vulnerability affects NVIDIA Triton Inference Server across multiple versions and can be exploited over the network with low attack complexity requiring no privileges or user interaction. With a CVSS score of 7.5 (High) and an EPSS score not provided, this represents a significant availability risk for organizations running AI/ML inference workloads.

NVIDIA Triton Inference Server's Sagemaker HTTP server contains a race condition vulnerability that allows unauthenticated remote attackers to trigger an exception, resulting in denial of service. The vulnerability affects NVIDIA Triton Inference Server deployments using the Sagemaker HTTP server component and can be exploited over the network without authentication or user interaction. There is no indication of active exploitation (not in CISA KEV), and EPSS data was not provided, but the CVSS score of 7.5 (High) reflects the ease of exploitation.

NVIDIA APEX for Linux contains a deserialization of untrusted data vulnerability that affects environments using PyTorch versions earlier than 2.6. An attacker with low privileges on an adjacent network can exploit this flaw to achieve code execution, denial of service, privilege escalation, data tampering, and information disclosure with scope change (CVSS 9.0 Critical). No KEV listing or public POC availability has been reported at this time.

This vulnerability in NVIDIA's B300 MCU (specifically the CX8 MCU component) allows privileged attackers with network access to modify unsupported hardware registries, potentially causing denial of service and data tampering. The flaw affects HGX and DGX B300 systems and requires high privileges and non-trivial attack complexity to exploit, though no public exploit code or active exploitation has been reported at this time. SSVC assessment indicates the vulnerability presents partial technical impact with no known automated exploitation capability.

NVIDIA SNAP-4 Container contains a buffer size calculation vulnerability in its configuration interface that allows an authenticated attacker on the same virtualized environment to trigger a denial of service condition. An attacker with local VM access and low-level privileges can send specially crafted configuration payloads that cause incorrect buffer size calculations, resulting in crashes of the SNAP storage service and loss of storage availability to the host. There is currently no evidence of active exploitation or public proof-of-concept code, and the SSVC framework indicates no known exploitation has occurred, though the vulnerability is automatable in principle.

NVIDIA SNAP-4 Container contains a use-of-out-of-range pointer offset vulnerability in the VIRTIO-BLK component that allows a malicious guest VM to trigger memory corruption and denial of service. The vulnerability affects NVIDIA SNAP-4 Container across all versions as indicated by the CPE string. A successful exploit results in denial of service to the DPA (Data Processing Appliance) and impacts storage availability to other VMs, though no code execution or information disclosure is possible. There is no evidence of active exploitation in the wild (KEV status indicates none), and the CVSS score of 6.8 reflects moderate severity with high availability impact but limited exploitability due to requiring adjacent network access and user privileges.

A command injection vulnerability (CVSS 6.7). Remediation should follow standard vulnerability management procedures. Vendor patch is available.

A SQL injection vulnerability (CVSS 5.3). Remediation should follow standard vulnerability management procedures. Vendor patch is available.

Astro web framework versions prior to 10.0.0 contain an unbounded JSON parsing vulnerability in the Server Islands POST handler that allows unauthenticated remote attackers to exhaust server memory and cause denial of service. The vulnerability affects all Astro SSR applications using the Node standalone adapter, regardless of whether Server Islands functionality is actually used, because the request body is parsed before route validation occurs. An attacker can craft a payload containing many small JSON objects to achieve approximately 15x memory amplification, crashing the process with a single malicious request.

An unauthenticated denial-of-service vulnerability exists in Parse Server versions prior to 8.6.58 and 9.6.0-alpha.52, where attackers can submit authentication requests with arbitrary, unconfigured provider names to trigger expensive unindexed database queries. Each malicious request causes a full collection scan on the user database, and since these requests can be parallelized, an attacker can rapidly exhaust database resources and degrade service availability. The vulnerability requires no authentication or special privileges, making it trivial to exploit at scale, and patches are available in the referenced versions.

LibVNCServer versions 0.9.15 and earlier contain null pointer dereference vulnerabilities in the HTTP proxy handlers within httpd.c that allow remote attackers to cause denial of service by sending specially crafted HTTP requests. The vulnerability affects systems with both httpd and proxy features enabled, and while no CVSS score or EPSS data is currently available, the presence of a public patch and vendor advisory indicates this is a recognized security issue requiring prompt attention.

A signed integer overflow vulnerability exists in the libtiff library's putcontig8bitYCbCr44tile function that leads to out-of-bounds heap writes through incorrect memory pointer calculations. Red Hat Enterprise Linux versions 6, 7, 8, 9, and 10 are confirmed affected. An attacker can exploit this by tricking a user into opening a specially crafted TIFF file, potentially achieving arbitrary code execution or causing application crashes.

NGINX worker process crashes via null pointer dereference in the mail authentication module when CRAM-MD5 or APOP authentication is configured with retry-enabled backend servers. This denial of service vulnerability affects NGINX Plus and NGINX Open Source with no patch currently available, allowing unauthenticated remote attackers to terminate worker processes and degrade service availability.

Mozilla NSS Libraries contain a denial-of-service vulnerability affecting Firefox versions below 149 that allows unauthenticated remote attackers to crash affected systems without requiring user interaction. The flaw stems from improper resource handling and currently lacks an available patch. Given the high CVSS score of 7.5 and network-based attack vector, this poses significant availability risk to Mozilla Firefox users.

Firefox versions below 149 are vulnerable to a resource exhaustion attack through malformed XML processing that an unauthenticated attacker can trigger remotely without user interaction. This denial-of-service vulnerability allows attackers to crash affected Firefox instances or degrade performance. No patch is currently available for this vulnerability.

Mozilla Firefox versions prior to 149 and Firefox ESR prior to 140.9 are vulnerable to denial-of-service attacks through the WebRTC signaling component, which an unauthenticated remote attacker can exploit without user interaction to crash affected browsers. The vulnerability stems from improper resource handling and currently has no available patch, leaving users of affected versions at risk of service disruption.

A NULL pointer dereference vulnerability exists in MolotovCherry Android-ImageMagick7 before version 7.1.2-10 that allows local attackers with user interaction to trigger a denial of service condition by crashing the application. The vulnerability affects the Android-ImageMagick7 library (CWE-476) and requires local access and user interaction to exploit, resulting in high availability impact but no confidentiality or integrity compromise. A patch is available from the vendor via GitHub pull request #183.

A Use After Free (UAF) vulnerability exists in No-Chicken Echo-Mate prior to version V250329, allowing an attacker with high privileges to cause memory corruption that may lead to information disclosure, data integrity violations, or denial of service. The vulnerability is classified as CWE-416 and carries a CVSS score of 6.4; a security patch is available from the vendor via GitHub pull request.

A NULL pointer dereference vulnerability exists in tmate versions prior to 2.4.0, allowing unauthenticated remote attackers to cause a denial of service condition by crashing the application. The vulnerability has a CVSS score of 5.3 (medium severity) with low attack complexity and no privilege requirements, making it readily exploitable over the network. A patch is available from the vendor, and this issue does not compromise confidentiality or integrity-only availability.

A resource exhaustion vulnerability exists in Undertow where remote attackers can send HTTP GET requests with multipart/form-data content to trigger premature parsing and disk storage of request data, leading to Denial of Service when applications use parameter retrieval methods like getParameterMap(). The vulnerability affects multiple Red Hat products including Enterprise Linux 8, 9, and 10, JBoss Enterprise Application Platform 7 and 8, Red Hat Fuse 7, and several Apache Camel variants. An attacker with network access and no authentication can exhaust server disk resources with moderate attack complexity, causing service unavailability.

ncmdump versions before 1.4.0 contain a null pointer dereference vulnerability in the cJSON.cpp module that allows local attackers to cause a denial of service through application crash. An attacker with local access and user interaction can trigger this vulnerability to disable the affected ncmdump utility. A patch is available for affected users.

A Use After Free vulnerability exists in the No-Chicken Echo-Mate SDK, specifically within the kernel memory management modules (rmap.C file), that can lead to denial of service and memory corruption. This vulnerability affects Echo-Mate versions prior to V250329 and has been reported by GovTech CSG. An attacker exploiting this flaw could trigger a crash or potentially achieve code execution through memory corruption, though the specific attack vector complexity remains dependent on the exposure of the affected kernel module.

A buffer overflow vulnerability in Modizer before v4.3 allows remote attackers to execute arbitrary code with high privileges by sending specially crafted input that bypasses memory boundary restrictions in the IMAP module. The network-accessible flaw requires minimal user interaction and affects the integrated libopenmpt curl library. A patch is available and should be applied immediately given the critical severity and confirmed attack vector.

Remote code execution in Google Chrome's Federated Credential Management (FedCM) prior to version 146.0.7680.165 enables unauthenticated attackers to execute arbitrary code within the browser sandbox through a malicious HTML page. This use-after-free vulnerability in memory management affects Chrome on all supported platforms and requires only user interaction to trigger. A patch is available in Chrome 146.0.7680.165 and later.

Sandboxed code execution in Google Chrome's WebGPU implementation (prior to 146.0.7680.165) stems from a use-after-free memory vulnerability that can be triggered via malicious HTML pages. An unauthenticated remote attacker can exploit this to execute arbitrary code within the Chrome sandbox without user interaction beyond viewing a crafted webpage. A patch is available for affected users.

Sandbox escape in Google Chrome prior to version 146.0.7680.165 via a use-after-free vulnerability in the Dawn graphics component enables remote attackers to execute arbitrary code when users visit malicious HTML pages. The vulnerability affects multiple platforms including Debian systems and requires only user interaction to trigger, bypassing Chrome's sandbox isolation. A patch is available to remediate this high-severity memory corruption flaw.

Freeciv21, an open-source turn-based strategy game, contains a stack overflow vulnerability that allows remote attackers to crash servers or client applications through specially-crafted network packets. All versions prior to 3.1.1 are affected, with exploitation requiring no authentication and leaving no useful logs by default. While there is no evidence of active exploitation (not in CISA KEV) or public proof-of-concept code, Debian has issued security advisory DSA-6173-1 indicating distribution-level concern.

Free5GC versions 4.2.0 and earlier are vulnerable to denial of service attacks through improper handling of authentication failures in the AMF component, allowing unauthenticated remote attackers to crash the service. The vulnerability requires no user interaction and can be exploited over the network, potentially disrupting 5G core network operations. No patch is currently available.

ConcreteCMS version 9.4.7 contains a memory exhaustion vulnerability in the File Manager's download functionality that allows authenticated attackers to trigger a Denial of Service condition. The vulnerability exists in the 'download' method of 'concrete/controllers/backend/file.php', where improper memory management during zip archive creation using ZipArchive::addFromString combined with file_get_contents loads entire file contents into PHP memory without streaming or size validation. An attacker with valid authentication credentials can exploit this by requesting bulk downloads of large files, exhausting available PHP memory and causing the PHP-FPM process to crash with a SIGSEGV signal, rendering the web application unavailable with HTTP 500 errors.