Null Pointer Dereference
Monthly
Remote Registry Service denial of service in Microsoft Windows allows network-authenticated attackers to crash the service via a crafted RPC request triggering a null pointer dereference. The CVSS vector (AV:N/AC:L/PR:L/UI:N) confirms that any domain or local account with network access to the service is sufficient for exploitation - no elevated privileges required. No public exploit code has been identified and this vulnerability is not listed in CISA KEV at time of analysis.
Null pointer dereference in the Windows Remote Registry Service enables an authenticated network attacker to crash the service, resulting in denial of availability for remote registry operations across a broad range of Microsoft platforms. Affected builds span Windows 10/11 consumer releases and Windows Server 2012 through Server 2025, representing the near-entirety of Microsoft's currently supported Windows footprint. No public exploit identified at time of analysis, and CISA's SSVC framework rates exploitation as 'none' with partial technical impact, positioning this as a standard patch-cycle priority rather than an out-of-band emergency.
Denial of service in Velociraptor allows any authenticated user - including those holding only the read-only reader role - to immediately terminate the entire server process with a single API call. By invoking SetPassword with a username that does not exist, an attacker triggers a null pointer dereference (CWE-476) that crashes the process, rendering the DFIR platform completely unavailable. No public exploit has been identified at time of analysis, but the trivially low exploitation barrier - any valid credential suffices - makes this a credible insider or compromised-account threat in any environment where Velociraptor is operationally depended upon.
NULL pointer dereference in Zephyr RTOS's experimental device_next USB DFU class crashes any device where DFU download is enabled when a USB host sends a zero-length DFU_DNLOAD terminator after initiating a valid transfer. The result is a fatal CPU fault causing device crash or reset - impact is strictly limited to availability, with the vendor and commit diff explicitly confirming no memory corruption or information disclosure. No public exploit has been identified at time of analysis, and exploitation requires physical control of the attached USB host.
NULL pointer dereference in the shim application's dp.c library exposes Red Hat Enterprise Linux 7, 8, and 9 systems using UEFI Secure Boot to a local denial-of-service condition. An attacker with high local privileges and the ability to interact with the shim boot path can trigger the missing NULL pointer check, potentially disrupting the boot process. No public exploit code has been identified at time of analysis, and the low CVSS score of 3.9 reflects the constrained attack prerequisites, though the changed scope (S:C) signals that the impact crosses from the shim component into the broader boot environment.
Null pointer dereference in OP-TEE OS through version 4.10.0 allows a low-privileged Normal World process to crash the entire Trusted Execution Environment by opening a session directly on the Widevine pseudo-TA when CFG_WIDEVINE_PTA is enabled. The open_session handler in core/pta/widevine.c calls is_user_ta_ctx(session->ctx) without first checking that session is non-NULL, faulting the TEE at S-EL1 and making all TEE services - including secure key storage and other Trusted Applications - unavailable until reboot. No public exploit code exists and no CISA KEV listing is present; the upstream fix is confirmed by commit 0aadfc2 and the CVSS 4.0 score of 5.7 reflects the local, low-privilege, configuration-dependent exploitation conditions.
Authenticated denial of service in HashiCorp Consul Community Edition and Consul Enterprise 1.18.0-2.0.2 allows a network attacker holding config-entry write permission to crash the Consul server agent by submitting a crafted service-router configuration entry. The flaw is rooted in a null pointer dereference (CWE-476) triggered along the Enterprise-to-Community Edition downgrade code path, meaning only deployments undergoing or having undergone that transition are exploitable. No public exploit code or active exploitation confirmed by CISA KEV has been identified; vendor-released patches are available and confirmed in Consul 2.0.3 and Consul Enterprise 1.21.17, 1.22.11, and 2.0.3.
Kernel null pointer dereference in Imagination Technologies Graphics DDK allows a local non-privileged user to crash the host system via crafted GPU system calls. Multiple release branches are affected, including DDK 26.1 RTM1, 25.1-25.3 RTM, 24.2 RTM2, 23.2 RTM2, and 1.18 RTM2. An attacker with a local shell account on a device running the affected kernel driver can trigger platform instability or a full denial of service - no exploit has been publicly identified at time of analysis, and EPSS probability is extremely low at 0.15% (5th percentile).
Null pointer dereference in the llama.cpp LLaMA-Android JNI wrapper's bench_1model() function allows denial of service via a crafted model file. Builds b1886 through b7445 (packaged releases 0.9.0-0.17.1) are affected; the function skips null validation on the model context pointer before dereferencing it, so supplying a malformed or truncated GGUF model file triggers a SIGSEGV that terminates the Android application process. No public exploit has been identified at time of analysis and this is not listed in CISA KEV, but the attack path is mechanically simple for anyone able to deliver a crafted model to the device.
Null pointer dereference in HDF5 through 2.3.0 allows denial of service when a user opens a crafted file containing a malformed N-Bit filter pipeline message with zero client-data values. The function H5Z__filter_nbit unconditionally reads cd_values[0] through cd_values[4] before checking whether the array is non-NULL or contains at least 5 elements, crashing any application - including the bundled h5ls and h5repack tools - that calls H5Dread on such a dataset. No active exploitation has been confirmed (not listed in CISA KEV) and no EPSS score was available, but the fix diff publicly exposes the exact crash path, lowering the barrier for proof-of-concept development.
Denial of service in ggml-org llama.cpp allows remote attackers to crash the application by sending a crafted JSON schema that triggers a null pointer dereference in the _visit_pattern function. No authentication or user interaction is required, and all versions up to the affected commits d006858/e15efe0 are vulnerable. The fix is pending merge; no public exploit code has been identified.
NULL pointer dereference in the Linux kernel tracing subsystem (`func_set_flag()`) allows a local attacker with tracefs write access to trigger a kernel panic and crash the system. The flaw arises when a process holds an open file descriptor to a function tracer option (e.g., `func_stack_trace`) while a concurrent tracer switch sets `tr->current_trace_flags` to NULL; a subsequent write to that option file then dereferences the NULL pointer before the function tracer guard executes. No active exploitation (KEV) or public exploit code has been identified; EPSS is 0.20% at the 10th percentile, consistent with a localized, technically specific DoS condition.
NULL pointer dereference in the Linux kernel's hid_logitech_dj driver causes a kernel crash (DoS) when a crafted HID descriptor is processed during device probe. The flaw exists in logi_dj_probe(): when a Logitech Unifying receiver emulation presents report ID 0x20 with only padding output items, hid-core registers the report with rep->maxfield == 0. The error-path validation then dereferences rep->field[0]->report_count while printing a diagnostic message, triggering a KASAN-visible null-ptr-deref and kernel panic. No public exploit is identified at time of analysis, but the kernel commit descriptions include a full uhid-based reproduction method, lowering the barrier for local attackers.
Kernel panic via NULL pointer dereference in the Linux kernel's memory shrinker debugfs interface allows a local attacker to crash the system. The shrinker_debugfs_add() function unconditionally creates 'count' and 'scan' debugfs files for all registered shrinkers, but some shrinkers - notably the xen-backend shrinker - only implement one of the two required callbacks (count_objects or scan_objects). Writing to the exposed 'scan' debugfs file on such a shrinker dispatches through a NULL function pointer, triggering a kernel panic. No public exploit has been identified at time of analysis, and EPSS score of 0.21% reflects low exploitation probability. Patches are available across multiple stable kernel branches.
NULL pointer dereference in the Linux kernel's swap cgroup subsystem (`mm/swap_cgroup.c`) causes a kernel panic and full system crash on swapless hosts running kernel versions after commit `bea67dcc5eea`. The batched PTE zap path introduced by that commit calls `lookup_swap_cgroup_id()` without validating the swap entry against `swap_info[]`, so any process exit involving a PTE corrupted into a type-0 swap entry dereferences the uninitialized `ctrl->map` pointer and takes the host down. The crash pattern was confirmed in production on kernel 6.12.58 and independently reproduced by syzbot; no public exploit exists, but the kernel teardown path is deterministically vulnerable once the prerequisite conditions are present.
NULL pointer dereference in the Linux kernel Bluetooth HCI connection handler crashes the kernel when aborting a pending connection while `hdev->sent_cmd` is NULL but `req_status` remains `HCI_REQ_PEND`. Local users with Bluetooth access can trigger a general protection fault from the `hci_rx_work()` receive path, producing a kernel panic and denying service to all users on the affected system. No public exploit has been identified and EPSS probability stands at 0.21% (12th percentile), indicating very limited real-world exploitation likelihood.
NULL pointer dereference in the Linux kernel's Bluetooth ISO subsystem can crash the kernel when a race condition is triggered during PA-sync broadcast sink socket operations. The flaw exists in iso_conn_big_sync(), which drops the socket lock to call hci_get_route() and then re-acquires it without re-validating that the connection structure is still intact - allowing concurrent teardown events (iso_disconn_cfm → iso_conn_del → iso_chan_del) to null out iso_pi(sk)->conn before it is dereferenced. A local low-privileged user with access to Bluetooth ISO sockets can reliably crash the kernel, resulting in a denial of service. No public exploit code has been identified and no active exploitation is confirmed.
Unconditional invocation of cancel_work_sync() in the mtk-jpeg media driver's release path triggers spurious WARN_ON kernel warnings on non-multicore MediaTek JPEG codec platforms where the workqueue callback pointer is NULL. Systems running affected Linux kernel versions (6.6.140-6.18.38, 7.0.4) on MediaTek SoC hardware may experience kernel log pollution or, on kernels compiled with CONFIG_PANIC_ON_WARN=y, a full system denial of service when the JPEG device is released. No public exploit has been identified and no active exploitation is recorded; this is a stability and correctness fix with strictly local trigger conditions.
NULL pointer dereference in the Linux kernel's usbip virtual UDC (vudc) subsystem crashes the kernel when FunctionFS AIO cancellations are processed. The `vep_alloc_request()` function never initialized `vrequest->udc`, so any AIO cancellation arriving at `vep_dequeue()` - such as one triggered by a host-side `usbip attach` - dereferences a null pointer and produces a kernel oops, denying service to the guest system. A local attacker with low privileges on a system configured for USB/IP with FunctionFS AIO endpoints can reliably reproduce this crash. No public exploit code exists, and EPSS at 0.22% (13th percentile) confirms the path has not seen meaningful exploitation despite the bug reportedly existing for approximately ten years since Linux 4.7.
NULL pointer dereference in the Linux kernel's mt76 driver for MediaTek mt7921/mt7925 WiFi chipsets causes a kernel panic (denial of service) via a race condition in Channel Switch Announcement (CSA) beacon processing. When a CSA beacon is received, cfg80211 queues a wiphy work item; if the station disconnects or the channel context is torn down before the work item executes, the driver's dev->new_ctx pointer is already NULL but dereferenced unconditionally in mt7921_channel_switch_rx_beacon() and mt7925_channel_switch_rx_beacon(). EPSS is 0.20% (10th percentile) and no public exploit or CISA KEV listing is identified at time of analysis.
Null pointer dereference in the Linux kernel's chacha20poly1305 crypto template allows a local unprivileged user to crash the system. The flaw exists in chachapoly_create(), which passes the unvalidated return value of crypto_attr_alg_name() directly to strcmp() when the poly1305 sub-argument is absent in a malformed template string; since that function returns an ERR_PTR on failure, the subsequent strcmp() call dereferences an invalid pointer, triggering a kernel panic. Patches are available across multiple stable branches; no public exploit or active exploitation has been identified at time of analysis.
Null pointer dereference in the Linux kernel module decompression path crashes the kernel when a local user loads a compressed module under memory pressure. The flaw exists across multiple stable kernel branches and was introduced at commit b1ae6dc41eaa; patches are now available for all affected stable trees. No active exploitation confirmed (not in CISA KEV), and EPSS at 0.21% (12th percentile) reflects very low exploitation probability, consistent with the local-only, condition-dependent attack surface.
NULL pointer dereference in the Linux kernel's `page_ext` memory iteration API crashes systems during dynamic memory hotplug operations. The `page_ext_iter_next()` function fails to enforce the PFN boundary, advancing the iterator index past `__pgcount` and calling `page_ext_lookup()` on an uninitialized memory section, triggering a kernel panic. With EPSS at 0.21% (11th percentile) and no CISA KEV listing, real-world exploitation is low-probability and operationally constrained to environments actively performing memory hotplug, such as cloud hypervisors or NUMA-heavy servers with memory ballooning.
Null pointer dereference in the Linux kernel's KVM arm64 nested virtualization subsystem allows a local low-privileged attacker to crash the host kernel via a race condition in VNCR pseudo-TLB invalidation. The function kvm_invalidate_vncr_va() dereferences the VNCR pseudo-TLB pointer without first verifying allocation or validity, unlike its companion kvm_invalidate_vncr_ipa(). Exploitation results in a kernel panic that disrupts all virtual machines on the affected host; no public exploit has been identified at time of analysis, and EPSS of 0.21% (11th percentile) reflects minimal observed exploitation activity.
NULL pointer dereference in the Linux kernel's fuse-uring subsystem enables a local low-privilege attacker to crash the kernel, causing a denial of service. The flaw arises from a state management race in the fuse-uring request lifecycle: when a copy into a userspace io_uring ring buffer fails, the entry's request pointer is nullified but the entry remains on the active queue, allowing the expiration scanner to dereference the NULL pointer in a narrow race window. No public exploit has been identified and EPSS stands at 0.21% (11th percentile), indicating low likelihood of opportunistic exploitation.
NULL pointer dereference in the Linux kernel's `copy_process()` function allows a local low-privileged user to crash the host kernel via a denial-of-service condition. During `fork()`, the child process inherits the `PF_BLOCK_TS` process flag from the parent while the child's `blk_plug` pointer is simultaneously reset to NULL, breaking the invariant that `PF_BLOCK_TS` set implies `current->plug != NULL`. Any downstream block I/O subsystem code path that dereferences `current->plug` without a NULL guard in the child will trigger a kernel panic. No public exploit is identified at time of analysis, and EPSS at 0.16% (5th percentile) reflects minimal observed exploitation interest.
NULL pointer dereference in the Linux kernel's pch_uart serial driver allows a local low-privileged user to crash the kernel by triggering a failed DMA memory allocation in dma_handle_rx(). Systems running Intel PCH (Platform Controller Hub) hardware with the pch_uart driver active and DMA enabled are vulnerable to denial of service via kernel panic. No public exploit or CISA KEV listing exists; with an EPSS of 0.17% (6th percentile), real-world exploitation risk is low, but patches are confirmed across multiple stable kernel branches.
Kernel panic via NULL pointer dereference in the Linux tps65219 PMIC regulator driver crashes affected systems when a hardware IRQ fires on the device, producing a local denial-of-service condition. The regression was introduced by commit 64a6b577490c, which removed the helper function `tps65219_get_rdev_by_name()` and inadvertently eliminated the only code path that assigned `irq_data.rdev`, leaving the pointer uninitialized for every registered IRQ. Systems running Linux kernel versions from that commit through the stable-branch fix points (6.18.34 and 7.0.11) on hardware equipped with the TI tps65219 PMIC are affected; no public exploit has been identified and the EPSS score of 0.17% reflects low exploitation probability.
Broadcast TLB flush in the Linux kernel x86 memory management subsystem triggers a General Protection Fault (#GP) on AMD INVLPGB-capable systems booted with the 'nopcid' parameter, causing a kernel panic and local denial of service. When PCID is disabled via 'nopcid', CR4.PCIDE is not set, but the INVLPGB broadcast TLB invalidation path remains enabled; once a memory descriptor becomes active across more than three CPUs, the kernel assigns it a global ASID and issues INVLPGB with a non-zero PCID - an illegal state that crashes the kernel. No public exploit exists, EPSS is 0.17% (6th percentile), and this is not in CISA KEV; real-world impact is constrained to the uncommon 'nopcid' boot configuration on AMD hardware.
NULL pointer dereference in the Linux kernel ethtool PHY subsystem allows a local low-privileged user to trigger a kernel panic (denial of service) by unbinding a PHY driver via sysfs while the device remains registered in the ethtool link topology. Affected kernel versions span the 6.16, 6.18.x, 7.0.x, and 7.1 stable branches; upstream fixes are available in commits targeting 6.18.34 and 7.0.11. No public exploit code exists and no active exploitation has been identified at time of analysis, consistent with EPSS at 0.17% (6th percentile).
NULL pointer dereference in the Linux kernel ACPI platform driver subsystem crashes the kernel when 13 core ACPI drivers are force-matched to devices lacking an ACPI companion object. The root cause is the absence of ACPI_COMPANION() or ACPI_HANDLE() null-checks in affected drivers, combined with the kernel's device_match_driver_override() mechanism which can bypass normal device-ID matching. Impact is limited to local denial of service (kernel panic); no active exploitation is confirmed (not in CISA KEV) and EPSS sits at 0.17% (6th percentile), placing this firmly in the maintenance-fix rather than urgent-remediation category.
NULL pointer dereference in the Linux kernel's Qualcomm Adreno GPU driver (drm/msm/a6xx) crashes the kernel when `a8xx_hfi_send_perf_table()` proceeds to dereference a kzalloc() return value without first validating it against NULL. Systems running affected kernel versions with Qualcomm Adreno 6xx or 8xx GPU hardware - primarily Snapdragon-based ARM devices, smartphones, and servers - can be crashed by a local low-privileged user who triggers the GPU HFI performance table code path under memory pressure. EPSS of 0.16% (5th percentile) and no CISA KEV listing confirm no known active exploitation; patches are available in stable kernel releases 7.0.11 and 7.1.
Kernel panic in the Linux kernel's PowerPC-specific arch_irq_work_raise() function crashes affected systems when machine check exception handlers invoke the function from real mode, a context where virtual memory translation is disabled and preempt_count access via a virtual address faults with a bad area data access error. PowerPC deployments running kernel versions prior to 6.1.175, 6.6.142, 6.12.92, 6.18.34, 7.0.11, and 7.1 are affected; x86, ARM, and other non-PowerPC architectures are completely unaffected. No public exploit code exists and EPSS is 0.17% (7th percentile), consistent with a hardware-architecture-specific reliability defect rather than an attacker-driven threat; the vulnerability does not appear in the CISA KEV catalog.
NULL pointer dereference in the Linux kernel's iwlwifi MLD (Multi-Link Device) Wi-Fi driver allows a local low-privileged user to crash the kernel, resulting in a denial-of-service condition. The flaw resides in `iwl_mld_remove_link`, where the `link->fw_id` field is read before the `link` pointer is validated for NULL, enabling a kernel panic on affected systems with Intel wireless hardware. No public exploit code exists and the vulnerability is not listed in CISA KEV; patches are available in stable kernel releases 6.18.34, 7.0.11, and 7.1.
MongoDB Server terminates abnormally during outbound TLS handshake when a remote peer delivers a malformed OCSP response, producing a denial-of-service condition against the database process itself. OCSP stapling validation is enabled by default for all outgoing TLS connections, meaning no operator misconfiguration is required to expose this attack surface - any MongoDB server initiating TLS connections is potentially reachable. No public exploit code exists and no CISA KEV listing is present at time of analysis, but the default-enabled feature combined with the adjacent-network attack vector makes this a credible operational risk for MongoDB clusters traversing partially trusted or shared network segments.
Denial of service in NLnet Labs Unbound 1.10.0 through 1.25.1 allows a remote attacker controlling any delegated DNS zone to crash the resolver daemon via a NULL pointer dereference. The vulnerable path is activated only when both the serve-expired feature and a response-ip or RPZ CNAME redirect rule are configured simultaneously; the serve-expired-client-timeout callback's two-pass CNAME alias loop resets alias_rrset on the second pass without resetting partial_rep, causing an eventual null dereference and process crash. No public exploit code has been identified and this vulnerability is not listed in CISA KEV, but the network-accessible attack surface makes it a meaningful availability risk for any resolver running these co-configured features.
Null pointer dereference in Gitea's AddTime API (versions prior to 1.27.0) allows an authenticated repository administrator to crash the server by specifying a non-existent username in a time-tracking request. The root cause is a missing `return` statement in `routers/api/v1/repo/issue_tracked_time.go` after `GetUserByName()` returns an error, causing `AddTime()` to dereference a nil user pointer and trigger a Go runtime panic. No active exploitation is confirmed (not in CISA KEV), but a proof-of-concept is embedded in the GHSA advisory, making the issue trivially reproducible by any repository administrator.
NULL pointer dereference in NanoMQ 0.24.11 and earlier allows an authenticated REST API user to crash the entire broker process with a single malformed HTTP request. The `properties_parse()` function fails to validate that `user_properties` is a JSON object before iterating its elements, calling `strlen()` on a NULL pointer and causing a fatal segmentation fault. No active exploitation has been confirmed and no public exploit code has been identified at time of analysis; a vendor patch is available in version 0.24.14.
NULL pointer dereference in NanoMQ 0.24.11 and earlier allows a malicious MQTT broker to remotely crash any connecting NanoMQ MQTTv5 client - including bridge mode - with a single 35-byte crafted packet, triggering SIGSEGV and denial of service. The bug in mqtt_codec.c:1863 arises when a CONNECT packet carries will properties (will_prop != NULL) but no connect-level properties (prop == NULL); the code erroneously dereferences prop->next, reading from virtual address 0x38 (NULL plus struct field offset). No CISA KEV listing or public exploit is confirmed at time of analysis, but the minimal 35-byte trigger and auto-reconnect behavior in bridge mode can convert a single crash into a persistent DoS loop.
NULL pointer dereference in the Linux kernel's DualPI2 traffic scheduler crashes the kernel when GSO segmentation accounting mismatches occur under a QFQ parent queueing discipline. Systems running Linux kernels prior to 6.18.39, 7.1.4, or 7.2-rc1 with DualPI2 configured as a child of QFQ are vulnerable to a local denial-of-service via kernel panic. No public exploit code exists and EPSS is 0.15% (5th percentile), reflecting the niche configuration required; however, the availability impact is total (kernel crash) when conditions are met.
Kernel panic via NULL dereference in the Linux kernel BPF subsystem affects systems compiled with CONFIG_BPF_LSM=y where the BPF LSM is not activated at boot. A locally authenticated user with low privileges can create a BPF_MAP_TYPE_INODE_STORAGE map under this misconfigured state, causing bpf_inode() to alias the struct rcu_head.func callback pointer; when map cleanup nulls this aliased pointer, rcu_do_batch() subsequently attempts an instruction fetch at address 0x0, triggering an immediate kernel panic and complete system denial of service. No public exploit is identified at time of analysis; EPSS sits at 0.14% (4th percentile), consistent with the narrow triggering conditions required.
NULL pointer dereference in the Linux kernel's team network driver (net/team/team_core.c) allows a local attacker with CAP_NET_ADMIN to crash the kernel by racing a mode change against concurrent packet transmission. The vulnerability arises because __team_change_mode() wipes team->ops via memset() before reinstalling safe dummy handlers, creating a window where team_xmit() running under RCU on a parallel CPU can invoke a NULL function pointer. No public exploit code exists and the issue is not listed in CISA KEV, but the availability impact is total (kernel panic), and the fix is present in upstream stable commits.
NULL pointer dereference in the Linux kernel XFS log recovery path allows a local attacker to crash the kernel by mounting a crafted XFS filesystem image. The flaw exists in xlog_recover_reorder_trans() at fs/xfs/xfs_log_recover.c:1836, where a committed log transaction containing zero regions leaves ri_buf NULL, causing a fatal dereference when ITEM_TYPE() is called during recovery. EPSS is 0.16% (5th percentile) and no active exploitation has been observed; the vulnerability was discovered through an AI-assisted code audit, not in-the-wild activity.
Denial of service in SurrealDB's embedded JavaScript scripting engine allows any query-executing user - including unauthenticated guests when guest access is enabled alongside scripting - to immediately crash the server process by passing an oversized string to the QuickJS-NG v0.8 runtime for compilation, triggering a null pointer dereference. The crash requires a manual operator restart with no graceful shutdown, and cannot be leveraged for code execution or data compromise. The attack is constrained to instances where the non-default `--allow-scripting` capability is active; no public exploit identified at time of analysis, and the vulnerability is not listed in CISA KEV.
NULL pointer dereference in the Linux kernel's EFI runtime subsystem crashes affected systems when ACPI Platform Runtime Mechanism (PRM) handlers are invoked during early boot before the EFI runtime workqueue has been allocated. Systems with EFI PRM-capable firmware running unpatched kernels between the introduction of commit 5894cf571e14 and the respective stable-branch fixes are affected. No public exploit or CISA KEV listing exists; the vulnerability manifests as a kernel panic during initialization on susceptible hardware, resulting in a denial of service.
NULL pointer dereference in the Linux kernel's SPI QUP (Qualcomm Universal Peripheral) driver causes a local denial-of-service condition affecting Qualcomm SoC-based Linux systems. When DMA setup fails during driver probe, the fallback to PIO mode leaves DMA channel pointers in a stale error state rather than clearing them to NULL; a subsequent probe failure or driver unbind then dereferences those error pointers, triggering a kernel panic. Patches are available across all active stable branches (5.10.259, 5.15.210, 6.1.176, 6.6.142, 6.12.92, 6.18.34, 7.0.11, 7.1); no public exploit has been identified and EPSS is at the 6th percentile, indicating negligible exploitation probability at this time.
Error pointer dereference in the Linux kernel ep93xx SPI driver causes kernel panic (denial of service) under specific driver lifecycle conditions on Cirrus Logic EP93xx ARM SoC hardware. When DMA channel setup fails during driver probe and falls back to PIO mode, the driver fails to clear the DMA channel pointers; any subsequent probe error or driver unbind then dereferences those stale error pointers, triggering a kernel oops or panic. No public exploit exists and EPSS of 0.16% (5th percentile) reflects negligible real-world exploitation probability - this is a targeted stability fix for a niche embedded platform.
Error pointer dereference in the Linux kernel's spi-sprd driver causes local denial of service on systems equipped with Spreadtrum (SPRD) SoC hardware. When DMA setup fails during driver probe and the driver falls back to PIO mode, a subsequent late probe error triggers a cleanup path that does not check the dma.enabled flag before attempting to release DMA channels - resulting in an error pointer dereference or double-channel-release and consequent kernel panic. No public exploit exists and EPSS sits at 0.17% (6th percentile), reflecting the highly hardware-specific nature of this flaw. Vendor-released patches are confirmed across multiple Linux stable branches.
Crash kernel panic in Linux kernel's KHO (Kexec Handover) subsystem causes kdump capture to fail due to a missing crash-kernel guard in kho_fill_kimage(). Systems configured with both KHO and a crash kernel (kdump) are affected: when a kernel crash transfers control to the crash kernel, KHO metadata pointing outside the reserved crash region triggers an invalid phys_to_virt() translation in kho_memory_init(), crashing the crash kernel itself and defeating the crash dump mechanism. No public exploit exists and EPSS at 0.16% (6th percentile) reflects appropriately low exploitation probability given the local-only, configuration-dependent nature of the flaw.
NULL pointer dereference in the Linux kernel's ARM Firmware Framework for Armv8-A (arm_ffa) bus driver allows a local actor with kernel module loading rights to crash the host system. The bus match callback unconditionally dereferences the id_table pointer of any registering FF-A client driver; a driver that omits id_table triggers an immediate kernel panic, producing a denial-of-service condition. EPSS at 0.17% (6th percentile) and absence from the CISA KEV catalog indicate no public exploit and negligible observed exploitation activity.
Early boot initialization on ARM Integrator/CP hardware in the Linux kernel triggers a NULL pointer dereference by invoking memory allocation routines before the memory management subsystem is operational, causing a kernel panic that renders affected systems unbootable. The regression was introduced by commit bdb249fce9ad4 and affects all Linux stable branches from that point through patched releases (5.10.258, 5.15.209, 6.1.175, 6.6.142, 6.12.92, 6.18.34, 7.0.11, 7.1). No public exploit exists, CISA KEV does not list this vulnerability, and EPSS sits at 0.17% (7th percentile), reflecting the narrowly scoped, hardware-specific nature of the defect.
Sleep-in-atomic-context denial of service in the Linux kernel btrfs filesystem driver allows a local low-privileged user to crash the system by triggering file sync operations while kernel tracing is active. The btrfs_sync_file trace event erroneously calls dput() - a function that may sleep - within an atomic context where sleeping is forbidden, producing a kernel BUG splat and potential panic. No active exploitation has been identified, EPSS is 0.16% (6th percentile), and the vulnerability requires a non-default kernel tracing configuration to be exploitable, substantially limiting real-world exposure.
Null pointer dereference in the Linux kernel's Bluetooth ISO reassembly path allows any Bluetooth broadcaster within radio range to crash a victim Linux host by transmitting an ISO_END PDU without a preceding ISO_START on a BIS (Broadcast Isochronous Stream) connection. Affected kernels span all stable branches from the ISO introduction commit (ccf74f2390d60a2f9a75ef496d2564abb478f46a) through fixed releases 6.1.175, 6.6.142, 6.12.92, 6.18.34, 7.0.11, and 7.1. No public exploit code or CISA KEV listing exists at time of analysis; EPSS is 0.18% (8th percentile), reflecting low current exploitation probability despite the unauthenticated wireless trigger available to BIS attackers.
NULL pointer dereference in the Linux kernel's ethtool PHY subsystem allows a local low-privileged user to crash the kernel and cause a denial of service. The flaw in `phy_prepare_data()` fails to check return values from `kstrdup()` for the strings `name`, `drvname`, `upstream_sfp_name`, and `downstream_sfp_name`; when allocation fails and returns NULL, `phy_reply_size()` subsequently calls `strlen()` unconditionally on the NULL pointer, triggering a kernel oops and system panic. No public exploit code has been identified and EPSS stands at 0.17% (6th percentile), but the availability impact is total - a kernel panic - making this a standard patching priority for any multi-user or shared Linux environment.
NULL pointer dereference in the Linux kernel's PCM512x ASoC audio codec driver crashes the kernel when a local low-privileged user writes to the overclocking mixer kcontrol. The driver's pcm512x_overclock_xxx_put() handler incorrectly invokes snd_soc_dapm_kcontrol_to_dapm() on a standard mixer kcontrol - an accessor only valid for DAPM kcontrols - returning NULL and triggering a kernel panic. No public exploit has been identified and EPSS stands at 0.16% (6th percentile), reflecting low exploitation likelihood; impact is confined to denial of service on systems with PCM512x audio hardware.
NULL pointer dereference in the Linux kernel's batman-adv Bridge Loop Avoidance (BLA) subsystem crashes the kernel when a hard interface is concurrently decoupled from its mesh interface during ARP processing. Local users with low privileges on systems running batman-adv mesh networking can trigger a kernel panic, causing a full denial of service. No public exploit exists and EPSS stands at 0.21% (11th percentile), marking this as a low-urgency stability fix rather than an active threat.
NULL pointer dereference in the Linux kernel netfilter x_tables subsystem allows a local attacker to crash the kernel via a race condition during network namespace teardown. The flaw exists because arp/ip(6)t_register_table() adds a table to the per-netns linked list before allocating its per-namespace hook ops structure, leaving a window where ops=NULL is visible to concurrent readers. If a network namespace exit runs concurrently during this window, nf_unregister_net_hooks() receives a NULL ops pointer and triggers a general protection fault. No public exploit has been identified at time of analysis, and EPSS is very low at 0.15%.
Null pointer dereference in the Linux kernel's block bio-integrity subsystem (`bio_integrity_map_user()`) allows a local low-privileged attacker to crash the kernel, causing a denial of service. The flaw stems from `pin_user_pages_fast()` being permitted to return a partial page-pin result that is never validated before `bvec_from_pages()` dereferences the uninitialized zero-address entry. Patches are available across multiple stable kernel branches and Ubuntu has issued USN-8593-1; no active exploitation has been identified (EPSS 0.17%, no CISA KEV listing).
NULL pointer dereference in the Linux kernel's drm/msm/adreno driver allows local low-privilege users to crash systems equipped with older Qualcomm Adreno GPU generations (a2xx through a4xx). Querying UBWC (Universal Bandwidth Compression) parameters from userspace on these GPU families - which have no UBWC support and therefore no initialized UBWC config structure - triggers a NULL dereference in adreno_get_param(), resulting in a kernel panic. No public exploit has been identified at time of analysis; EPSS is 0.17% (6th percentile), consistent with the hardware-specific, local-only scope.
NULL pointer dereference in the Linux kernel's fbdev framebuffer subsystem allows a local low-privileged user to trigger a kernel panic (denial of service) by replacing the framebuffer modelist via sysfs while fbcon is unbound. The crash occurs when a subsequent console takeover calls fb_videomode_to_var() with a NULL mode pointer, resulting from the broken invariant that info->var always has a matching entry in info->modelist. No public exploit or CISA KEV listing exists; EPSS of 0.18% (7th percentile) reflects negligible observed exploitation interest.
Null pointer dereference in the Linux kernel's virtual console screen (vc_screen) subsystem causes a local denial-of-service via kernel panic. The flaw exists in vcs_write(), where a race condition between concurrent writes and virtual console deallocation leaves a stale vc_data pointer that is subsequently dereferenced in the notifier chain. An authenticated local user with write access to /dev/vcs* devices can trigger this to crash the kernel. No public exploit exists and EPSS is very low at 0.19% (9th percentile), though the fix is confirmed available across multiple stable kernel branches.
NULL pointer dereference in the Linux kernel's vidtv virtual DVB test driver crashes the kernel when memory allocation fails silently during PID context initialization. Systems running kernel versions between the introducing commit (f90cf6079bf6) and the patched releases with CONFIG_DVB_VIDTV enabled are vulnerable to local denial of service. No public exploit is identified at time of analysis, and EPSS probability is 0.19% (9th percentile), indicating very low exploitation likelihood; the vulnerability is absent from CISA KEV.
Nil pointer dereference in CoreDNS prior to 1.14.5 allows remote unauthenticated attackers to crash or degrade the DNS server by sending a single ordinary DNS query. The rewrite plugin's edns0 response rules dereference the result of IsEdns0() without a nil check; when a downstream plugin returns a response lacking an OPT record, the ResponseReverter panics, returning SERVFAIL in default deployments or terminating the CoreDNS process entirely when the debug directive is active. No public exploit code has been identified and the issue is fixed in v1.14.5.
Deterministic nil-pointer dereference in Envoy Gateway's gatewayapi runner allows a low-privileged tenant to permanently stall controller-wide xDS and Infrastructure IR publishing by submitting a single malformed CRD. Any tenant with namespace-scoped RBAC permission to create SecurityPolicy and TCPRoute resources can trigger a panic on every reconcile cycle by omitting the spec.authorization field, requiring administrator intervention to restore control-plane operations. No exploitation confirmed in the wild (not in CISA KEV); patches are available in versions 1.7.4 and 1.8.1.
Denial of service in the Matter SDK (connectedhomeip) before 1.4.0 lets a remote unauthenticated attacker crash a smart-home device by sending a crafted read request. The flaw lives in the ReadRevisionAttribute function, which is reused across multiple clusters (Channel, Account Login, TargetNavigator), so any device exposing those clusters is affected. No public exploit identified at time of analysis, and the issue is availability-only (no code execution or data exposure).
Null pointer dereference in the Windows SMB Server component allows an authenticated network attacker to crash the service across multiple Windows 10, 11, and Server editions. The CVSS vector (AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H) confirms network exploitability with low-privilege credentials and complete availability impact, though confidentiality and integrity are unaffected. No public exploit identified at time of analysis; SSVC exploitation status is 'none' and EPSS sits at 0.79%, indicating low active exploitation pressure despite the broad product footprint.
Null pointer dereference in Active Directory Domain Services (AD DS) on Windows allows an authenticated, network-adjacent attacker to crash the service and deny domain authentication to all dependent users and systems. Affecting Windows 10 versions 1607 through 22H2, Windows 11 versions 24H2 through 26H1, and Windows Server 2012 through 2025, this vulnerability carries a CVSS 6.5 with high availability impact. No public exploit identified at time of analysis and CISA SSVC assesses exploitation as none with non-automatable attack path, keeping real-world urgency at moderate despite the breadth of affected platforms.
Null pointer dereference in Windows Active Directory Domain Services (AD DS) enables a low-privileged authenticated attacker to crash the service remotely, causing denial of service across the affected domain. The flaw spans a wide range of Windows client and server releases, from Windows 10 version 1607 through Windows 11 version 26H1 and Windows Server 2012 through 2025. No public exploit code has been identified and this vulnerability is not listed in the CISA Known Exploited Vulnerabilities catalog at time of analysis, though the network-accessible attack surface and low privilege requirement lower the bar for abuse in environments with broad domain user access.
NULL pointer dereference in Zephyr RTOS's syscall verifier allows an unprivileged user-mode thread to crash the kernel across the userspace security boundary. The z_vrfy_k_thread_name_copy() verification handler in kernel/thread.c incorrectly guards against the caller-supplied thread pointer being NULL rather than the ko pointer returned by k_object_find(), so any non-NULL but unregistered address bypasses the check and triggers a supervisor-mode NULL dereference that halts or reboots the system. Affecting Zephyr v2.0.0 through v4.4.0 when built with CONFIG_USERSPACE and CONFIG_THREAD_NAME enabled, no public exploit code and no CISA KEV listing have been identified at time of analysis, but the one-syscall reproducibility makes this straightforward to trigger in qualifying builds.
Null pointer dereference in open62541's client library (versions up to 1.5.5) allows a remote OPC UA server to crash a connecting client by returning a malformed Server_NamespaceArray during session establishment, causing denial of service. The flaw is client-side only - server deployments are unaffected - and exploitation requires the attacker to control or impersonate a server the vulnerable client connects to, making practical exploitation high-complexity. A proof-of-concept exists as a GitHub issue report; no public exploit is confirmed as weaponized and the vulnerability is not listed in CISA KEV.
NULL pointer dereference in NanaZip's custom archive handlers crashes the application when a user tests or extracts archives of seven specific formats. All NanaZip versions prior to 6.5.1749.0 are affected; the seven vulnerable handlers cover WebAssembly, ElectronAsar, Zealfs, Romfs, Ufs, Littlefs, and DotNetSingleFile archive types. Impact is limited to a process crash (denial of service) with no confidentiality or integrity consequence; no public exploit or active exploitation has been identified at time of analysis.
NULL pointer dereference in the Juniper Networks Junos OS and Junos OS Evolved management daemon (mgd) allows a local, high-privileged attacker to crash the mgd process by manipulating a specific 'system services ssh' configuration parameter. Repeated execution of the offending configuration commands sustains the Denial of Service condition until the action ceases, as mgd will restart but crash again upon re-triggering. No public exploit code has been identified and this vulnerability is not listed in the CISA Known Exploited Vulnerabilities catalog; the attack barrier is high, requiring both local access and administrative-level credentials.
Null pointer dereference in GNU LibreDWG up to 0.13.4 allows a local low-privileged attacker to crash any application that processes a maliciously crafted DWG file via the `dwg_next_entity` function in `src/dwg.c`, resulting in denial of service. A proof-of-concept exploit file is publicly available (CVSS 4.0 E:P), though no active exploitation is confirmed in CISA KEV. The issue is fully resolved by upgrading to version 0.14, which includes a committed upstream patch.
GNU patch crashes with a NULL pointer dereference when a user applies a specially crafted unified-diff file, resulting in denial of service. Improper handling of consecutive end-of-file newline markers corrupts internal hunk data structures, causing a NULL pointer to be passed to fwrite() during processing. No public exploit has been identified at time of analysis and no CISA KEV listing exists; real-world impact is constrained by the requirement for user interaction with a malicious file.
Wireshark's SSH protocol dissector crashes via a null pointer dereference (CWE-476) in versions 4.4.0-4.4.16 and 4.6.0-4.6.6, enabling denial of service against any analyst or engineer running an affected build. The flaw is triggered locally when Wireshark processes malformed SSH protocol data, whether from a live capture or a crafted packet capture file, causing the application to crash and disrupting network analysis workflows. No active exploitation has been confirmed in CISA KEV, and no public exploit code is known at time of analysis.
NULL pointer dereference in SQLite's Session Extension crashes any application that passes attacker-controlled changeset blobs to sqlite3changeset_apply_v3(). Affected releases include SQLite 3.53.1 and all trunk builds prior to check-in e807d4e3798efd53. Impact is limited to availability - the process crashes - but because SQLite is embedded ubiquitously, the blast radius depends entirely on how widely consuming applications expose this code path to untrusted input. A public proof-of-concept gist is referenced in the CVE record; no public exploit identified at time of analysis beyond that demonstrator, and the vulnerability is not listed in CISA KEV.
Null pointer dereference in the ONNX Python library's version converter crashes any application that calls `onnx.version_converter.convert_version()` on a crafted model containing an Upsample node with zero inputs, producing an unrecoverable SIGSEGV. Affected versions include at minimum onnx 1.21.0 and 1.22.0, confirmed by a 107-byte public proof-of-concept; the vulnerability is part of a systemic pattern spanning eight adapters. No public active exploitation is confirmed in CISA KEV, but the trivially small PoC eliminates any meaningful exploitation barrier for threat actors targeting ML model conversion pipelines.
Kernel denial-of-service in Zephyr RTOS v4.4.0's Dhara flash translation layer driver crashes the system during FTL disk initialization when a flash error coincides with the journal-resume checkpoint scan. The driver's dhara_nand_read/erase/prog/copy callbacks unconditionally dereference the caller-supplied err pointer, but the upstream Dhara library legitimately passes NULL during its binary search in find_last_checkblock(), triggering a NULL write and kernel fault. No public exploit code has been identified and this CVE is absent from the CISA KEV catalog; exploitation is gated on specific flash media conditions (uncorrectable ECC, bad block, or induced fault) occurring on a checkpoint page at mount time, constraining real-world risk to physical or supply-chain threat models.
NULL pointer dereference in GPAC's smooth_parse_stream_index() function crashes the application when processing a maliciously crafted MPEG-DASH or Smooth Streaming media file, resulting in denial of service. Affected versions are all GPAC master HEAD builds prior to commit b35c61f104b85fbb16520ac2838d5d2ef70845b5. Exploitation requires local access and user interaction to open a crafted file; a proof-of-concept is publicly available via GitHub Gist, though EPSS sits at 0.17% (7th percentile) and no active exploitation has been confirmed by CISA KEV.
Null Pointer Dereference in Adobe DNG SDK versions 1.7.1 build 2536 and earlier allows an attacker to crash any application embedding the SDK by supplying a specially crafted DNG file. The flaw is strictly a denial-of-service with no confidentiality or integrity impact, and requires a victim to open the malicious file, constraining realistic exposure to imaging pipelines or end-user applications that ingest untrusted DNG content. No public exploit code and no active exploitation have been identified at time of analysis.
Null pointer dereference in GPAC 26.02.0's nhmldump_send_frame function (src/filters/write_nhml.c) allows a local, low-privileged attacker to crash the application by supplying crafted media input to the NHML write filter. Impact is strictly limited to availability - a process-level denial of service with no confidentiality or integrity implications. A publicly available proof-of-concept exploit exists (GitHub issue #3596), though the vendor itself characterizes this class of issue as 'more bugs than vulns,' contextualizing it as a robustness fix rather than an urgent security incident.
NULL pointer dereference in the Zephyr RTOS MAX32xxx USB device controller driver (udc_max32.c) crashes devices running Zephyr v4.4.0 when a physically connected USB host aborts an in-flight EP0 control transfer by sending a new SETUP packet - a completely legal USB protocol action. The race condition between interrupt-queued transfer-completion events and asynchronous FIFO draining by the driver thread causes net_buf_add(NULL, ...) when udc_buf_get() returns NULL on an empty FIFO, producing a near-NULL pointer dereference and device fault. No active exploitation has been confirmed (not in CISA KEV), and no public proof-of-concept code has been identified at time of analysis; real-world risk is constrained by the physical access prerequisite and the specific MAX32xxx hardware dependency.
Insufficient intelligence to synthesize. CVE-2026-47709 description is marked unknown, CVSS vector is not available, CWE is not available, and no product name or affected versions are specified - only that Ubuntu reported it. Comprehensive vulnerability analysis requires description, CVSS vector, affected product details, and remediation data.
Denial-of-service via NULL pointer dereference in PipeWire's RAOP (Remote Audio Output Protocol) module affects Red Hat Enterprise Linux 8, 9, and 10. The RAOP module fails to enforce an upper bound on Content-Length values in incoming requests and does not validate the return value of pw_array_add(); when a sufficiently large Content-Length triggers an allocation failure, the unchecked NULL return causes a crash of the PipeWire daemon, resulting in complete loss of audio services. No special authentication is required from the adjacent network, and no public exploit or CISA KEV listing has been identified at time of analysis.
NULL pointer dereference in the Linux kernel's ASoC wm_adsp driver crashes the kernel when firmware controls are removed without a prior NULL check on private control data. Systems running affected kernel versions (5.16 through multiple stable branches) with Wolfson/Cirrus Logic ADSP hardware are exposed to local denial-of-service via kernel panic. No active exploitation has been identified, EPSS sits at 0.16% (6th percentile), and patches have been backported to all active stable branches.
NULL pointer dereference in the Linux kernel's ASoC SDCA (SoundWire Device Class for Audio) subsystem crashes the kernel during audio device cleanup, resulting in a denial of service. The `sdca_dev_unregister_functions()` routine iterates over SDCA function descriptors without validating for NULL entries, which can be present when function registration fails partway through or when device cleanup races with probe deferral. This crash was observed in practice on Lenovo ThinkPad X1 Carbon G14 (Panther Lake) systems where missing SOF firmware caused the SOF audio driver probe to fail, triggering the NULL dereference during subsequent SoundWire device teardown. No public exploit exists and EPSS sits at 0.14% (4th percentile), reflecting the hardware-specific and locally-triggered nature of this flaw.
NULL pointer dereference in the Linux kernel's Qualcomm Camera Control Interface (CCI) i2c driver crashes the kernel during driver removal on boards where only one of the two available I2C masters is initialized. Triggering device unbinding or module unloading on affected Qualcomm hardware configurations causes cci_remove() to call cci_halt() for both masters, dereferencing an uninitialized completion pointer for the disabled master and producing a kernel panic. No public exploit exists and EPSS is at the 6th percentile, indicating no meaningful exploitation activity; impact is limited to availability via local denial of service on specific Qualcomm SoC configurations.
NULL pointer dereference in the Linux kernel's Airoha QDMA network driver crashes the kernel when a misconfigured Device Tree Source (DTS) causes `of_reserved_mem_lookup()` to return NULL without a guard check. Systems running the `net/airoha` driver with a DTS referencing a non-existent or removed `memory-region` node in the reserved memory table trigger a kernel panic during driver initialization at `airoha_qdma_init_hfwd_queues()`. The impact is exclusively a local denial-of-service (system crash); no confidentiality or integrity compromise is possible. No public exploit exists and EPSS places exploitation probability at 0.15% (5th percentile), consistent with the highly specific hardware and configuration prerequisites.
NULL pointer dereference in the Linux kernel bonding subsystem crashes the kernel when a local user with CAP_NET_ADMIN invokes bond_do_ioctl() with a non-existent slave interface name. The slave_dbg() macro unconditionally dereferences slave_dev->name before the NULL guard is evaluated, producing a kernel oops and local denial-of-service. No public exploit has been identified and EPSS sits at 0.16% (6th percentile), indicating very low observed exploitation activity; patches are available across all active stable branches.
NULL pointer dereference in the Linux kernel's DAMON LRU Sort subsystem crashes the kernel when damon_ctx allocation fails under memory pressure. Affected are Linux kernel versions through 6.18 and 7.0.x before 7.0.13, where damon_lru_sort_enabled_store() omits a NULL check before passing the allocation result to damon_commit_ctx(). A local attacker with low privileges can trigger a kernel panic, causing a denial of service. No active exploitation is confirmed (not in CISA KEV), and EPSS sits at 0.17% (6th percentile), reflecting negligible observed exploitation activity.
Remote Registry Service denial of service in Microsoft Windows allows network-authenticated attackers to crash the service via a crafted RPC request triggering a null pointer dereference. The CVSS vector (AV:N/AC:L/PR:L/UI:N) confirms that any domain or local account with network access to the service is sufficient for exploitation - no elevated privileges required. No public exploit code has been identified and this vulnerability is not listed in CISA KEV at time of analysis.
Null pointer dereference in the Windows Remote Registry Service enables an authenticated network attacker to crash the service, resulting in denial of availability for remote registry operations across a broad range of Microsoft platforms. Affected builds span Windows 10/11 consumer releases and Windows Server 2012 through Server 2025, representing the near-entirety of Microsoft's currently supported Windows footprint. No public exploit identified at time of analysis, and CISA's SSVC framework rates exploitation as 'none' with partial technical impact, positioning this as a standard patch-cycle priority rather than an out-of-band emergency.
Denial of service in Velociraptor allows any authenticated user - including those holding only the read-only reader role - to immediately terminate the entire server process with a single API call. By invoking SetPassword with a username that does not exist, an attacker triggers a null pointer dereference (CWE-476) that crashes the process, rendering the DFIR platform completely unavailable. No public exploit has been identified at time of analysis, but the trivially low exploitation barrier - any valid credential suffices - makes this a credible insider or compromised-account threat in any environment where Velociraptor is operationally depended upon.
NULL pointer dereference in Zephyr RTOS's experimental device_next USB DFU class crashes any device where DFU download is enabled when a USB host sends a zero-length DFU_DNLOAD terminator after initiating a valid transfer. The result is a fatal CPU fault causing device crash or reset - impact is strictly limited to availability, with the vendor and commit diff explicitly confirming no memory corruption or information disclosure. No public exploit has been identified at time of analysis, and exploitation requires physical control of the attached USB host.
NULL pointer dereference in the shim application's dp.c library exposes Red Hat Enterprise Linux 7, 8, and 9 systems using UEFI Secure Boot to a local denial-of-service condition. An attacker with high local privileges and the ability to interact with the shim boot path can trigger the missing NULL pointer check, potentially disrupting the boot process. No public exploit code has been identified at time of analysis, and the low CVSS score of 3.9 reflects the constrained attack prerequisites, though the changed scope (S:C) signals that the impact crosses from the shim component into the broader boot environment.
Null pointer dereference in OP-TEE OS through version 4.10.0 allows a low-privileged Normal World process to crash the entire Trusted Execution Environment by opening a session directly on the Widevine pseudo-TA when CFG_WIDEVINE_PTA is enabled. The open_session handler in core/pta/widevine.c calls is_user_ta_ctx(session->ctx) without first checking that session is non-NULL, faulting the TEE at S-EL1 and making all TEE services - including secure key storage and other Trusted Applications - unavailable until reboot. No public exploit code exists and no CISA KEV listing is present; the upstream fix is confirmed by commit 0aadfc2 and the CVSS 4.0 score of 5.7 reflects the local, low-privilege, configuration-dependent exploitation conditions.
Authenticated denial of service in HashiCorp Consul Community Edition and Consul Enterprise 1.18.0-2.0.2 allows a network attacker holding config-entry write permission to crash the Consul server agent by submitting a crafted service-router configuration entry. The flaw is rooted in a null pointer dereference (CWE-476) triggered along the Enterprise-to-Community Edition downgrade code path, meaning only deployments undergoing or having undergone that transition are exploitable. No public exploit code or active exploitation confirmed by CISA KEV has been identified; vendor-released patches are available and confirmed in Consul 2.0.3 and Consul Enterprise 1.21.17, 1.22.11, and 2.0.3.
Kernel null pointer dereference in Imagination Technologies Graphics DDK allows a local non-privileged user to crash the host system via crafted GPU system calls. Multiple release branches are affected, including DDK 26.1 RTM1, 25.1-25.3 RTM, 24.2 RTM2, 23.2 RTM2, and 1.18 RTM2. An attacker with a local shell account on a device running the affected kernel driver can trigger platform instability or a full denial of service - no exploit has been publicly identified at time of analysis, and EPSS probability is extremely low at 0.15% (5th percentile).
Null pointer dereference in the llama.cpp LLaMA-Android JNI wrapper's bench_1model() function allows denial of service via a crafted model file. Builds b1886 through b7445 (packaged releases 0.9.0-0.17.1) are affected; the function skips null validation on the model context pointer before dereferencing it, so supplying a malformed or truncated GGUF model file triggers a SIGSEGV that terminates the Android application process. No public exploit has been identified at time of analysis and this is not listed in CISA KEV, but the attack path is mechanically simple for anyone able to deliver a crafted model to the device.
Null pointer dereference in HDF5 through 2.3.0 allows denial of service when a user opens a crafted file containing a malformed N-Bit filter pipeline message with zero client-data values. The function H5Z__filter_nbit unconditionally reads cd_values[0] through cd_values[4] before checking whether the array is non-NULL or contains at least 5 elements, crashing any application - including the bundled h5ls and h5repack tools - that calls H5Dread on such a dataset. No active exploitation has been confirmed (not listed in CISA KEV) and no EPSS score was available, but the fix diff publicly exposes the exact crash path, lowering the barrier for proof-of-concept development.
Denial of service in ggml-org llama.cpp allows remote attackers to crash the application by sending a crafted JSON schema that triggers a null pointer dereference in the _visit_pattern function. No authentication or user interaction is required, and all versions up to the affected commits d006858/e15efe0 are vulnerable. The fix is pending merge; no public exploit code has been identified.
NULL pointer dereference in the Linux kernel tracing subsystem (`func_set_flag()`) allows a local attacker with tracefs write access to trigger a kernel panic and crash the system. The flaw arises when a process holds an open file descriptor to a function tracer option (e.g., `func_stack_trace`) while a concurrent tracer switch sets `tr->current_trace_flags` to NULL; a subsequent write to that option file then dereferences the NULL pointer before the function tracer guard executes. No active exploitation (KEV) or public exploit code has been identified; EPSS is 0.20% at the 10th percentile, consistent with a localized, technically specific DoS condition.
NULL pointer dereference in the Linux kernel's hid_logitech_dj driver causes a kernel crash (DoS) when a crafted HID descriptor is processed during device probe. The flaw exists in logi_dj_probe(): when a Logitech Unifying receiver emulation presents report ID 0x20 with only padding output items, hid-core registers the report with rep->maxfield == 0. The error-path validation then dereferences rep->field[0]->report_count while printing a diagnostic message, triggering a KASAN-visible null-ptr-deref and kernel panic. No public exploit is identified at time of analysis, but the kernel commit descriptions include a full uhid-based reproduction method, lowering the barrier for local attackers.
Kernel panic via NULL pointer dereference in the Linux kernel's memory shrinker debugfs interface allows a local attacker to crash the system. The shrinker_debugfs_add() function unconditionally creates 'count' and 'scan' debugfs files for all registered shrinkers, but some shrinkers - notably the xen-backend shrinker - only implement one of the two required callbacks (count_objects or scan_objects). Writing to the exposed 'scan' debugfs file on such a shrinker dispatches through a NULL function pointer, triggering a kernel panic. No public exploit has been identified at time of analysis, and EPSS score of 0.21% reflects low exploitation probability. Patches are available across multiple stable kernel branches.
NULL pointer dereference in the Linux kernel's swap cgroup subsystem (`mm/swap_cgroup.c`) causes a kernel panic and full system crash on swapless hosts running kernel versions after commit `bea67dcc5eea`. The batched PTE zap path introduced by that commit calls `lookup_swap_cgroup_id()` without validating the swap entry against `swap_info[]`, so any process exit involving a PTE corrupted into a type-0 swap entry dereferences the uninitialized `ctrl->map` pointer and takes the host down. The crash pattern was confirmed in production on kernel 6.12.58 and independently reproduced by syzbot; no public exploit exists, but the kernel teardown path is deterministically vulnerable once the prerequisite conditions are present.
NULL pointer dereference in the Linux kernel Bluetooth HCI connection handler crashes the kernel when aborting a pending connection while `hdev->sent_cmd` is NULL but `req_status` remains `HCI_REQ_PEND`. Local users with Bluetooth access can trigger a general protection fault from the `hci_rx_work()` receive path, producing a kernel panic and denying service to all users on the affected system. No public exploit has been identified and EPSS probability stands at 0.21% (12th percentile), indicating very limited real-world exploitation likelihood.
NULL pointer dereference in the Linux kernel's Bluetooth ISO subsystem can crash the kernel when a race condition is triggered during PA-sync broadcast sink socket operations. The flaw exists in iso_conn_big_sync(), which drops the socket lock to call hci_get_route() and then re-acquires it without re-validating that the connection structure is still intact - allowing concurrent teardown events (iso_disconn_cfm → iso_conn_del → iso_chan_del) to null out iso_pi(sk)->conn before it is dereferenced. A local low-privileged user with access to Bluetooth ISO sockets can reliably crash the kernel, resulting in a denial of service. No public exploit code has been identified and no active exploitation is confirmed.
Unconditional invocation of cancel_work_sync() in the mtk-jpeg media driver's release path triggers spurious WARN_ON kernel warnings on non-multicore MediaTek JPEG codec platforms where the workqueue callback pointer is NULL. Systems running affected Linux kernel versions (6.6.140-6.18.38, 7.0.4) on MediaTek SoC hardware may experience kernel log pollution or, on kernels compiled with CONFIG_PANIC_ON_WARN=y, a full system denial of service when the JPEG device is released. No public exploit has been identified and no active exploitation is recorded; this is a stability and correctness fix with strictly local trigger conditions.
NULL pointer dereference in the Linux kernel's usbip virtual UDC (vudc) subsystem crashes the kernel when FunctionFS AIO cancellations are processed. The `vep_alloc_request()` function never initialized `vrequest->udc`, so any AIO cancellation arriving at `vep_dequeue()` - such as one triggered by a host-side `usbip attach` - dereferences a null pointer and produces a kernel oops, denying service to the guest system. A local attacker with low privileges on a system configured for USB/IP with FunctionFS AIO endpoints can reliably reproduce this crash. No public exploit code exists, and EPSS at 0.22% (13th percentile) confirms the path has not seen meaningful exploitation despite the bug reportedly existing for approximately ten years since Linux 4.7.
NULL pointer dereference in the Linux kernel's mt76 driver for MediaTek mt7921/mt7925 WiFi chipsets causes a kernel panic (denial of service) via a race condition in Channel Switch Announcement (CSA) beacon processing. When a CSA beacon is received, cfg80211 queues a wiphy work item; if the station disconnects or the channel context is torn down before the work item executes, the driver's dev->new_ctx pointer is already NULL but dereferenced unconditionally in mt7921_channel_switch_rx_beacon() and mt7925_channel_switch_rx_beacon(). EPSS is 0.20% (10th percentile) and no public exploit or CISA KEV listing is identified at time of analysis.
Null pointer dereference in the Linux kernel's chacha20poly1305 crypto template allows a local unprivileged user to crash the system. The flaw exists in chachapoly_create(), which passes the unvalidated return value of crypto_attr_alg_name() directly to strcmp() when the poly1305 sub-argument is absent in a malformed template string; since that function returns an ERR_PTR on failure, the subsequent strcmp() call dereferences an invalid pointer, triggering a kernel panic. Patches are available across multiple stable branches; no public exploit or active exploitation has been identified at time of analysis.
Null pointer dereference in the Linux kernel module decompression path crashes the kernel when a local user loads a compressed module under memory pressure. The flaw exists across multiple stable kernel branches and was introduced at commit b1ae6dc41eaa; patches are now available for all affected stable trees. No active exploitation confirmed (not in CISA KEV), and EPSS at 0.21% (12th percentile) reflects very low exploitation probability, consistent with the local-only, condition-dependent attack surface.
NULL pointer dereference in the Linux kernel's `page_ext` memory iteration API crashes systems during dynamic memory hotplug operations. The `page_ext_iter_next()` function fails to enforce the PFN boundary, advancing the iterator index past `__pgcount` and calling `page_ext_lookup()` on an uninitialized memory section, triggering a kernel panic. With EPSS at 0.21% (11th percentile) and no CISA KEV listing, real-world exploitation is low-probability and operationally constrained to environments actively performing memory hotplug, such as cloud hypervisors or NUMA-heavy servers with memory ballooning.
Null pointer dereference in the Linux kernel's KVM arm64 nested virtualization subsystem allows a local low-privileged attacker to crash the host kernel via a race condition in VNCR pseudo-TLB invalidation. The function kvm_invalidate_vncr_va() dereferences the VNCR pseudo-TLB pointer without first verifying allocation or validity, unlike its companion kvm_invalidate_vncr_ipa(). Exploitation results in a kernel panic that disrupts all virtual machines on the affected host; no public exploit has been identified at time of analysis, and EPSS of 0.21% (11th percentile) reflects minimal observed exploitation activity.
NULL pointer dereference in the Linux kernel's fuse-uring subsystem enables a local low-privilege attacker to crash the kernel, causing a denial of service. The flaw arises from a state management race in the fuse-uring request lifecycle: when a copy into a userspace io_uring ring buffer fails, the entry's request pointer is nullified but the entry remains on the active queue, allowing the expiration scanner to dereference the NULL pointer in a narrow race window. No public exploit has been identified and EPSS stands at 0.21% (11th percentile), indicating low likelihood of opportunistic exploitation.
NULL pointer dereference in the Linux kernel's `copy_process()` function allows a local low-privileged user to crash the host kernel via a denial-of-service condition. During `fork()`, the child process inherits the `PF_BLOCK_TS` process flag from the parent while the child's `blk_plug` pointer is simultaneously reset to NULL, breaking the invariant that `PF_BLOCK_TS` set implies `current->plug != NULL`. Any downstream block I/O subsystem code path that dereferences `current->plug` without a NULL guard in the child will trigger a kernel panic. No public exploit is identified at time of analysis, and EPSS at 0.16% (5th percentile) reflects minimal observed exploitation interest.
NULL pointer dereference in the Linux kernel's pch_uart serial driver allows a local low-privileged user to crash the kernel by triggering a failed DMA memory allocation in dma_handle_rx(). Systems running Intel PCH (Platform Controller Hub) hardware with the pch_uart driver active and DMA enabled are vulnerable to denial of service via kernel panic. No public exploit or CISA KEV listing exists; with an EPSS of 0.17% (6th percentile), real-world exploitation risk is low, but patches are confirmed across multiple stable kernel branches.
Kernel panic via NULL pointer dereference in the Linux tps65219 PMIC regulator driver crashes affected systems when a hardware IRQ fires on the device, producing a local denial-of-service condition. The regression was introduced by commit 64a6b577490c, which removed the helper function `tps65219_get_rdev_by_name()` and inadvertently eliminated the only code path that assigned `irq_data.rdev`, leaving the pointer uninitialized for every registered IRQ. Systems running Linux kernel versions from that commit through the stable-branch fix points (6.18.34 and 7.0.11) on hardware equipped with the TI tps65219 PMIC are affected; no public exploit has been identified and the EPSS score of 0.17% reflects low exploitation probability.
Broadcast TLB flush in the Linux kernel x86 memory management subsystem triggers a General Protection Fault (#GP) on AMD INVLPGB-capable systems booted with the 'nopcid' parameter, causing a kernel panic and local denial of service. When PCID is disabled via 'nopcid', CR4.PCIDE is not set, but the INVLPGB broadcast TLB invalidation path remains enabled; once a memory descriptor becomes active across more than three CPUs, the kernel assigns it a global ASID and issues INVLPGB with a non-zero PCID - an illegal state that crashes the kernel. No public exploit exists, EPSS is 0.17% (6th percentile), and this is not in CISA KEV; real-world impact is constrained to the uncommon 'nopcid' boot configuration on AMD hardware.
NULL pointer dereference in the Linux kernel ethtool PHY subsystem allows a local low-privileged user to trigger a kernel panic (denial of service) by unbinding a PHY driver via sysfs while the device remains registered in the ethtool link topology. Affected kernel versions span the 6.16, 6.18.x, 7.0.x, and 7.1 stable branches; upstream fixes are available in commits targeting 6.18.34 and 7.0.11. No public exploit code exists and no active exploitation has been identified at time of analysis, consistent with EPSS at 0.17% (6th percentile).
NULL pointer dereference in the Linux kernel ACPI platform driver subsystem crashes the kernel when 13 core ACPI drivers are force-matched to devices lacking an ACPI companion object. The root cause is the absence of ACPI_COMPANION() or ACPI_HANDLE() null-checks in affected drivers, combined with the kernel's device_match_driver_override() mechanism which can bypass normal device-ID matching. Impact is limited to local denial of service (kernel panic); no active exploitation is confirmed (not in CISA KEV) and EPSS sits at 0.17% (6th percentile), placing this firmly in the maintenance-fix rather than urgent-remediation category.
NULL pointer dereference in the Linux kernel's Qualcomm Adreno GPU driver (drm/msm/a6xx) crashes the kernel when `a8xx_hfi_send_perf_table()` proceeds to dereference a kzalloc() return value without first validating it against NULL. Systems running affected kernel versions with Qualcomm Adreno 6xx or 8xx GPU hardware - primarily Snapdragon-based ARM devices, smartphones, and servers - can be crashed by a local low-privileged user who triggers the GPU HFI performance table code path under memory pressure. EPSS of 0.16% (5th percentile) and no CISA KEV listing confirm no known active exploitation; patches are available in stable kernel releases 7.0.11 and 7.1.
Kernel panic in the Linux kernel's PowerPC-specific arch_irq_work_raise() function crashes affected systems when machine check exception handlers invoke the function from real mode, a context where virtual memory translation is disabled and preempt_count access via a virtual address faults with a bad area data access error. PowerPC deployments running kernel versions prior to 6.1.175, 6.6.142, 6.12.92, 6.18.34, 7.0.11, and 7.1 are affected; x86, ARM, and other non-PowerPC architectures are completely unaffected. No public exploit code exists and EPSS is 0.17% (7th percentile), consistent with a hardware-architecture-specific reliability defect rather than an attacker-driven threat; the vulnerability does not appear in the CISA KEV catalog.
NULL pointer dereference in the Linux kernel's iwlwifi MLD (Multi-Link Device) Wi-Fi driver allows a local low-privileged user to crash the kernel, resulting in a denial-of-service condition. The flaw resides in `iwl_mld_remove_link`, where the `link->fw_id` field is read before the `link` pointer is validated for NULL, enabling a kernel panic on affected systems with Intel wireless hardware. No public exploit code exists and the vulnerability is not listed in CISA KEV; patches are available in stable kernel releases 6.18.34, 7.0.11, and 7.1.
MongoDB Server terminates abnormally during outbound TLS handshake when a remote peer delivers a malformed OCSP response, producing a denial-of-service condition against the database process itself. OCSP stapling validation is enabled by default for all outgoing TLS connections, meaning no operator misconfiguration is required to expose this attack surface - any MongoDB server initiating TLS connections is potentially reachable. No public exploit code exists and no CISA KEV listing is present at time of analysis, but the default-enabled feature combined with the adjacent-network attack vector makes this a credible operational risk for MongoDB clusters traversing partially trusted or shared network segments.
Denial of service in NLnet Labs Unbound 1.10.0 through 1.25.1 allows a remote attacker controlling any delegated DNS zone to crash the resolver daemon via a NULL pointer dereference. The vulnerable path is activated only when both the serve-expired feature and a response-ip or RPZ CNAME redirect rule are configured simultaneously; the serve-expired-client-timeout callback's two-pass CNAME alias loop resets alias_rrset on the second pass without resetting partial_rep, causing an eventual null dereference and process crash. No public exploit code has been identified and this vulnerability is not listed in CISA KEV, but the network-accessible attack surface makes it a meaningful availability risk for any resolver running these co-configured features.
Null pointer dereference in Gitea's AddTime API (versions prior to 1.27.0) allows an authenticated repository administrator to crash the server by specifying a non-existent username in a time-tracking request. The root cause is a missing `return` statement in `routers/api/v1/repo/issue_tracked_time.go` after `GetUserByName()` returns an error, causing `AddTime()` to dereference a nil user pointer and trigger a Go runtime panic. No active exploitation is confirmed (not in CISA KEV), but a proof-of-concept is embedded in the GHSA advisory, making the issue trivially reproducible by any repository administrator.
NULL pointer dereference in NanoMQ 0.24.11 and earlier allows an authenticated REST API user to crash the entire broker process with a single malformed HTTP request. The `properties_parse()` function fails to validate that `user_properties` is a JSON object before iterating its elements, calling `strlen()` on a NULL pointer and causing a fatal segmentation fault. No active exploitation has been confirmed and no public exploit code has been identified at time of analysis; a vendor patch is available in version 0.24.14.
NULL pointer dereference in NanoMQ 0.24.11 and earlier allows a malicious MQTT broker to remotely crash any connecting NanoMQ MQTTv5 client - including bridge mode - with a single 35-byte crafted packet, triggering SIGSEGV and denial of service. The bug in mqtt_codec.c:1863 arises when a CONNECT packet carries will properties (will_prop != NULL) but no connect-level properties (prop == NULL); the code erroneously dereferences prop->next, reading from virtual address 0x38 (NULL plus struct field offset). No CISA KEV listing or public exploit is confirmed at time of analysis, but the minimal 35-byte trigger and auto-reconnect behavior in bridge mode can convert a single crash into a persistent DoS loop.
NULL pointer dereference in the Linux kernel's DualPI2 traffic scheduler crashes the kernel when GSO segmentation accounting mismatches occur under a QFQ parent queueing discipline. Systems running Linux kernels prior to 6.18.39, 7.1.4, or 7.2-rc1 with DualPI2 configured as a child of QFQ are vulnerable to a local denial-of-service via kernel panic. No public exploit code exists and EPSS is 0.15% (5th percentile), reflecting the niche configuration required; however, the availability impact is total (kernel crash) when conditions are met.
Kernel panic via NULL dereference in the Linux kernel BPF subsystem affects systems compiled with CONFIG_BPF_LSM=y where the BPF LSM is not activated at boot. A locally authenticated user with low privileges can create a BPF_MAP_TYPE_INODE_STORAGE map under this misconfigured state, causing bpf_inode() to alias the struct rcu_head.func callback pointer; when map cleanup nulls this aliased pointer, rcu_do_batch() subsequently attempts an instruction fetch at address 0x0, triggering an immediate kernel panic and complete system denial of service. No public exploit is identified at time of analysis; EPSS sits at 0.14% (4th percentile), consistent with the narrow triggering conditions required.
NULL pointer dereference in the Linux kernel's team network driver (net/team/team_core.c) allows a local attacker with CAP_NET_ADMIN to crash the kernel by racing a mode change against concurrent packet transmission. The vulnerability arises because __team_change_mode() wipes team->ops via memset() before reinstalling safe dummy handlers, creating a window where team_xmit() running under RCU on a parallel CPU can invoke a NULL function pointer. No public exploit code exists and the issue is not listed in CISA KEV, but the availability impact is total (kernel panic), and the fix is present in upstream stable commits.
NULL pointer dereference in the Linux kernel XFS log recovery path allows a local attacker to crash the kernel by mounting a crafted XFS filesystem image. The flaw exists in xlog_recover_reorder_trans() at fs/xfs/xfs_log_recover.c:1836, where a committed log transaction containing zero regions leaves ri_buf NULL, causing a fatal dereference when ITEM_TYPE() is called during recovery. EPSS is 0.16% (5th percentile) and no active exploitation has been observed; the vulnerability was discovered through an AI-assisted code audit, not in-the-wild activity.
Denial of service in SurrealDB's embedded JavaScript scripting engine allows any query-executing user - including unauthenticated guests when guest access is enabled alongside scripting - to immediately crash the server process by passing an oversized string to the QuickJS-NG v0.8 runtime for compilation, triggering a null pointer dereference. The crash requires a manual operator restart with no graceful shutdown, and cannot be leveraged for code execution or data compromise. The attack is constrained to instances where the non-default `--allow-scripting` capability is active; no public exploit identified at time of analysis, and the vulnerability is not listed in CISA KEV.
NULL pointer dereference in the Linux kernel's EFI runtime subsystem crashes affected systems when ACPI Platform Runtime Mechanism (PRM) handlers are invoked during early boot before the EFI runtime workqueue has been allocated. Systems with EFI PRM-capable firmware running unpatched kernels between the introduction of commit 5894cf571e14 and the respective stable-branch fixes are affected. No public exploit or CISA KEV listing exists; the vulnerability manifests as a kernel panic during initialization on susceptible hardware, resulting in a denial of service.
NULL pointer dereference in the Linux kernel's SPI QUP (Qualcomm Universal Peripheral) driver causes a local denial-of-service condition affecting Qualcomm SoC-based Linux systems. When DMA setup fails during driver probe, the fallback to PIO mode leaves DMA channel pointers in a stale error state rather than clearing them to NULL; a subsequent probe failure or driver unbind then dereferences those error pointers, triggering a kernel panic. Patches are available across all active stable branches (5.10.259, 5.15.210, 6.1.176, 6.6.142, 6.12.92, 6.18.34, 7.0.11, 7.1); no public exploit has been identified and EPSS is at the 6th percentile, indicating negligible exploitation probability at this time.
Error pointer dereference in the Linux kernel ep93xx SPI driver causes kernel panic (denial of service) under specific driver lifecycle conditions on Cirrus Logic EP93xx ARM SoC hardware. When DMA channel setup fails during driver probe and falls back to PIO mode, the driver fails to clear the DMA channel pointers; any subsequent probe error or driver unbind then dereferences those stale error pointers, triggering a kernel oops or panic. No public exploit exists and EPSS of 0.16% (5th percentile) reflects negligible real-world exploitation probability - this is a targeted stability fix for a niche embedded platform.
Error pointer dereference in the Linux kernel's spi-sprd driver causes local denial of service on systems equipped with Spreadtrum (SPRD) SoC hardware. When DMA setup fails during driver probe and the driver falls back to PIO mode, a subsequent late probe error triggers a cleanup path that does not check the dma.enabled flag before attempting to release DMA channels - resulting in an error pointer dereference or double-channel-release and consequent kernel panic. No public exploit exists and EPSS sits at 0.17% (6th percentile), reflecting the highly hardware-specific nature of this flaw. Vendor-released patches are confirmed across multiple Linux stable branches.
Crash kernel panic in Linux kernel's KHO (Kexec Handover) subsystem causes kdump capture to fail due to a missing crash-kernel guard in kho_fill_kimage(). Systems configured with both KHO and a crash kernel (kdump) are affected: when a kernel crash transfers control to the crash kernel, KHO metadata pointing outside the reserved crash region triggers an invalid phys_to_virt() translation in kho_memory_init(), crashing the crash kernel itself and defeating the crash dump mechanism. No public exploit exists and EPSS at 0.16% (6th percentile) reflects appropriately low exploitation probability given the local-only, configuration-dependent nature of the flaw.
NULL pointer dereference in the Linux kernel's ARM Firmware Framework for Armv8-A (arm_ffa) bus driver allows a local actor with kernel module loading rights to crash the host system. The bus match callback unconditionally dereferences the id_table pointer of any registering FF-A client driver; a driver that omits id_table triggers an immediate kernel panic, producing a denial-of-service condition. EPSS at 0.17% (6th percentile) and absence from the CISA KEV catalog indicate no public exploit and negligible observed exploitation activity.
Early boot initialization on ARM Integrator/CP hardware in the Linux kernel triggers a NULL pointer dereference by invoking memory allocation routines before the memory management subsystem is operational, causing a kernel panic that renders affected systems unbootable. The regression was introduced by commit bdb249fce9ad4 and affects all Linux stable branches from that point through patched releases (5.10.258, 5.15.209, 6.1.175, 6.6.142, 6.12.92, 6.18.34, 7.0.11, 7.1). No public exploit exists, CISA KEV does not list this vulnerability, and EPSS sits at 0.17% (7th percentile), reflecting the narrowly scoped, hardware-specific nature of the defect.
Sleep-in-atomic-context denial of service in the Linux kernel btrfs filesystem driver allows a local low-privileged user to crash the system by triggering file sync operations while kernel tracing is active. The btrfs_sync_file trace event erroneously calls dput() - a function that may sleep - within an atomic context where sleeping is forbidden, producing a kernel BUG splat and potential panic. No active exploitation has been identified, EPSS is 0.16% (6th percentile), and the vulnerability requires a non-default kernel tracing configuration to be exploitable, substantially limiting real-world exposure.
Null pointer dereference in the Linux kernel's Bluetooth ISO reassembly path allows any Bluetooth broadcaster within radio range to crash a victim Linux host by transmitting an ISO_END PDU without a preceding ISO_START on a BIS (Broadcast Isochronous Stream) connection. Affected kernels span all stable branches from the ISO introduction commit (ccf74f2390d60a2f9a75ef496d2564abb478f46a) through fixed releases 6.1.175, 6.6.142, 6.12.92, 6.18.34, 7.0.11, and 7.1. No public exploit code or CISA KEV listing exists at time of analysis; EPSS is 0.18% (8th percentile), reflecting low current exploitation probability despite the unauthenticated wireless trigger available to BIS attackers.
NULL pointer dereference in the Linux kernel's ethtool PHY subsystem allows a local low-privileged user to crash the kernel and cause a denial of service. The flaw in `phy_prepare_data()` fails to check return values from `kstrdup()` for the strings `name`, `drvname`, `upstream_sfp_name`, and `downstream_sfp_name`; when allocation fails and returns NULL, `phy_reply_size()` subsequently calls `strlen()` unconditionally on the NULL pointer, triggering a kernel oops and system panic. No public exploit code has been identified and EPSS stands at 0.17% (6th percentile), but the availability impact is total - a kernel panic - making this a standard patching priority for any multi-user or shared Linux environment.
NULL pointer dereference in the Linux kernel's PCM512x ASoC audio codec driver crashes the kernel when a local low-privileged user writes to the overclocking mixer kcontrol. The driver's pcm512x_overclock_xxx_put() handler incorrectly invokes snd_soc_dapm_kcontrol_to_dapm() on a standard mixer kcontrol - an accessor only valid for DAPM kcontrols - returning NULL and triggering a kernel panic. No public exploit has been identified and EPSS stands at 0.16% (6th percentile), reflecting low exploitation likelihood; impact is confined to denial of service on systems with PCM512x audio hardware.
NULL pointer dereference in the Linux kernel's batman-adv Bridge Loop Avoidance (BLA) subsystem crashes the kernel when a hard interface is concurrently decoupled from its mesh interface during ARP processing. Local users with low privileges on systems running batman-adv mesh networking can trigger a kernel panic, causing a full denial of service. No public exploit exists and EPSS stands at 0.21% (11th percentile), marking this as a low-urgency stability fix rather than an active threat.
NULL pointer dereference in the Linux kernel netfilter x_tables subsystem allows a local attacker to crash the kernel via a race condition during network namespace teardown. The flaw exists because arp/ip(6)t_register_table() adds a table to the per-netns linked list before allocating its per-namespace hook ops structure, leaving a window where ops=NULL is visible to concurrent readers. If a network namespace exit runs concurrently during this window, nf_unregister_net_hooks() receives a NULL ops pointer and triggers a general protection fault. No public exploit has been identified at time of analysis, and EPSS is very low at 0.15%.
Null pointer dereference in the Linux kernel's block bio-integrity subsystem (`bio_integrity_map_user()`) allows a local low-privileged attacker to crash the kernel, causing a denial of service. The flaw stems from `pin_user_pages_fast()` being permitted to return a partial page-pin result that is never validated before `bvec_from_pages()` dereferences the uninitialized zero-address entry. Patches are available across multiple stable kernel branches and Ubuntu has issued USN-8593-1; no active exploitation has been identified (EPSS 0.17%, no CISA KEV listing).
NULL pointer dereference in the Linux kernel's drm/msm/adreno driver allows local low-privilege users to crash systems equipped with older Qualcomm Adreno GPU generations (a2xx through a4xx). Querying UBWC (Universal Bandwidth Compression) parameters from userspace on these GPU families - which have no UBWC support and therefore no initialized UBWC config structure - triggers a NULL dereference in adreno_get_param(), resulting in a kernel panic. No public exploit has been identified at time of analysis; EPSS is 0.17% (6th percentile), consistent with the hardware-specific, local-only scope.
NULL pointer dereference in the Linux kernel's fbdev framebuffer subsystem allows a local low-privileged user to trigger a kernel panic (denial of service) by replacing the framebuffer modelist via sysfs while fbcon is unbound. The crash occurs when a subsequent console takeover calls fb_videomode_to_var() with a NULL mode pointer, resulting from the broken invariant that info->var always has a matching entry in info->modelist. No public exploit or CISA KEV listing exists; EPSS of 0.18% (7th percentile) reflects negligible observed exploitation interest.
Null pointer dereference in the Linux kernel's virtual console screen (vc_screen) subsystem causes a local denial-of-service via kernel panic. The flaw exists in vcs_write(), where a race condition between concurrent writes and virtual console deallocation leaves a stale vc_data pointer that is subsequently dereferenced in the notifier chain. An authenticated local user with write access to /dev/vcs* devices can trigger this to crash the kernel. No public exploit exists and EPSS is very low at 0.19% (9th percentile), though the fix is confirmed available across multiple stable kernel branches.
NULL pointer dereference in the Linux kernel's vidtv virtual DVB test driver crashes the kernel when memory allocation fails silently during PID context initialization. Systems running kernel versions between the introducing commit (f90cf6079bf6) and the patched releases with CONFIG_DVB_VIDTV enabled are vulnerable to local denial of service. No public exploit is identified at time of analysis, and EPSS probability is 0.19% (9th percentile), indicating very low exploitation likelihood; the vulnerability is absent from CISA KEV.
Nil pointer dereference in CoreDNS prior to 1.14.5 allows remote unauthenticated attackers to crash or degrade the DNS server by sending a single ordinary DNS query. The rewrite plugin's edns0 response rules dereference the result of IsEdns0() without a nil check; when a downstream plugin returns a response lacking an OPT record, the ResponseReverter panics, returning SERVFAIL in default deployments or terminating the CoreDNS process entirely when the debug directive is active. No public exploit code has been identified and the issue is fixed in v1.14.5.
Deterministic nil-pointer dereference in Envoy Gateway's gatewayapi runner allows a low-privileged tenant to permanently stall controller-wide xDS and Infrastructure IR publishing by submitting a single malformed CRD. Any tenant with namespace-scoped RBAC permission to create SecurityPolicy and TCPRoute resources can trigger a panic on every reconcile cycle by omitting the spec.authorization field, requiring administrator intervention to restore control-plane operations. No exploitation confirmed in the wild (not in CISA KEV); patches are available in versions 1.7.4 and 1.8.1.
Denial of service in the Matter SDK (connectedhomeip) before 1.4.0 lets a remote unauthenticated attacker crash a smart-home device by sending a crafted read request. The flaw lives in the ReadRevisionAttribute function, which is reused across multiple clusters (Channel, Account Login, TargetNavigator), so any device exposing those clusters is affected. No public exploit identified at time of analysis, and the issue is availability-only (no code execution or data exposure).
Null pointer dereference in the Windows SMB Server component allows an authenticated network attacker to crash the service across multiple Windows 10, 11, and Server editions. The CVSS vector (AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H) confirms network exploitability with low-privilege credentials and complete availability impact, though confidentiality and integrity are unaffected. No public exploit identified at time of analysis; SSVC exploitation status is 'none' and EPSS sits at 0.79%, indicating low active exploitation pressure despite the broad product footprint.
Null pointer dereference in Active Directory Domain Services (AD DS) on Windows allows an authenticated, network-adjacent attacker to crash the service and deny domain authentication to all dependent users and systems. Affecting Windows 10 versions 1607 through 22H2, Windows 11 versions 24H2 through 26H1, and Windows Server 2012 through 2025, this vulnerability carries a CVSS 6.5 with high availability impact. No public exploit identified at time of analysis and CISA SSVC assesses exploitation as none with non-automatable attack path, keeping real-world urgency at moderate despite the breadth of affected platforms.
Null pointer dereference in Windows Active Directory Domain Services (AD DS) enables a low-privileged authenticated attacker to crash the service remotely, causing denial of service across the affected domain. The flaw spans a wide range of Windows client and server releases, from Windows 10 version 1607 through Windows 11 version 26H1 and Windows Server 2012 through 2025. No public exploit code has been identified and this vulnerability is not listed in the CISA Known Exploited Vulnerabilities catalog at time of analysis, though the network-accessible attack surface and low privilege requirement lower the bar for abuse in environments with broad domain user access.
NULL pointer dereference in Zephyr RTOS's syscall verifier allows an unprivileged user-mode thread to crash the kernel across the userspace security boundary. The z_vrfy_k_thread_name_copy() verification handler in kernel/thread.c incorrectly guards against the caller-supplied thread pointer being NULL rather than the ko pointer returned by k_object_find(), so any non-NULL but unregistered address bypasses the check and triggers a supervisor-mode NULL dereference that halts or reboots the system. Affecting Zephyr v2.0.0 through v4.4.0 when built with CONFIG_USERSPACE and CONFIG_THREAD_NAME enabled, no public exploit code and no CISA KEV listing have been identified at time of analysis, but the one-syscall reproducibility makes this straightforward to trigger in qualifying builds.
Null pointer dereference in open62541's client library (versions up to 1.5.5) allows a remote OPC UA server to crash a connecting client by returning a malformed Server_NamespaceArray during session establishment, causing denial of service. The flaw is client-side only - server deployments are unaffected - and exploitation requires the attacker to control or impersonate a server the vulnerable client connects to, making practical exploitation high-complexity. A proof-of-concept exists as a GitHub issue report; no public exploit is confirmed as weaponized and the vulnerability is not listed in CISA KEV.
NULL pointer dereference in NanaZip's custom archive handlers crashes the application when a user tests or extracts archives of seven specific formats. All NanaZip versions prior to 6.5.1749.0 are affected; the seven vulnerable handlers cover WebAssembly, ElectronAsar, Zealfs, Romfs, Ufs, Littlefs, and DotNetSingleFile archive types. Impact is limited to a process crash (denial of service) with no confidentiality or integrity consequence; no public exploit or active exploitation has been identified at time of analysis.
NULL pointer dereference in the Juniper Networks Junos OS and Junos OS Evolved management daemon (mgd) allows a local, high-privileged attacker to crash the mgd process by manipulating a specific 'system services ssh' configuration parameter. Repeated execution of the offending configuration commands sustains the Denial of Service condition until the action ceases, as mgd will restart but crash again upon re-triggering. No public exploit code has been identified and this vulnerability is not listed in the CISA Known Exploited Vulnerabilities catalog; the attack barrier is high, requiring both local access and administrative-level credentials.
Null pointer dereference in GNU LibreDWG up to 0.13.4 allows a local low-privileged attacker to crash any application that processes a maliciously crafted DWG file via the `dwg_next_entity` function in `src/dwg.c`, resulting in denial of service. A proof-of-concept exploit file is publicly available (CVSS 4.0 E:P), though no active exploitation is confirmed in CISA KEV. The issue is fully resolved by upgrading to version 0.14, which includes a committed upstream patch.
GNU patch crashes with a NULL pointer dereference when a user applies a specially crafted unified-diff file, resulting in denial of service. Improper handling of consecutive end-of-file newline markers corrupts internal hunk data structures, causing a NULL pointer to be passed to fwrite() during processing. No public exploit has been identified at time of analysis and no CISA KEV listing exists; real-world impact is constrained by the requirement for user interaction with a malicious file.
Wireshark's SSH protocol dissector crashes via a null pointer dereference (CWE-476) in versions 4.4.0-4.4.16 and 4.6.0-4.6.6, enabling denial of service against any analyst or engineer running an affected build. The flaw is triggered locally when Wireshark processes malformed SSH protocol data, whether from a live capture or a crafted packet capture file, causing the application to crash and disrupting network analysis workflows. No active exploitation has been confirmed in CISA KEV, and no public exploit code is known at time of analysis.
NULL pointer dereference in SQLite's Session Extension crashes any application that passes attacker-controlled changeset blobs to sqlite3changeset_apply_v3(). Affected releases include SQLite 3.53.1 and all trunk builds prior to check-in e807d4e3798efd53. Impact is limited to availability - the process crashes - but because SQLite is embedded ubiquitously, the blast radius depends entirely on how widely consuming applications expose this code path to untrusted input. A public proof-of-concept gist is referenced in the CVE record; no public exploit identified at time of analysis beyond that demonstrator, and the vulnerability is not listed in CISA KEV.
Null pointer dereference in the ONNX Python library's version converter crashes any application that calls `onnx.version_converter.convert_version()` on a crafted model containing an Upsample node with zero inputs, producing an unrecoverable SIGSEGV. Affected versions include at minimum onnx 1.21.0 and 1.22.0, confirmed by a 107-byte public proof-of-concept; the vulnerability is part of a systemic pattern spanning eight adapters. No public active exploitation is confirmed in CISA KEV, but the trivially small PoC eliminates any meaningful exploitation barrier for threat actors targeting ML model conversion pipelines.
Kernel denial-of-service in Zephyr RTOS v4.4.0's Dhara flash translation layer driver crashes the system during FTL disk initialization when a flash error coincides with the journal-resume checkpoint scan. The driver's dhara_nand_read/erase/prog/copy callbacks unconditionally dereference the caller-supplied err pointer, but the upstream Dhara library legitimately passes NULL during its binary search in find_last_checkblock(), triggering a NULL write and kernel fault. No public exploit code has been identified and this CVE is absent from the CISA KEV catalog; exploitation is gated on specific flash media conditions (uncorrectable ECC, bad block, or induced fault) occurring on a checkpoint page at mount time, constraining real-world risk to physical or supply-chain threat models.
NULL pointer dereference in GPAC's smooth_parse_stream_index() function crashes the application when processing a maliciously crafted MPEG-DASH or Smooth Streaming media file, resulting in denial of service. Affected versions are all GPAC master HEAD builds prior to commit b35c61f104b85fbb16520ac2838d5d2ef70845b5. Exploitation requires local access and user interaction to open a crafted file; a proof-of-concept is publicly available via GitHub Gist, though EPSS sits at 0.17% (7th percentile) and no active exploitation has been confirmed by CISA KEV.
Null Pointer Dereference in Adobe DNG SDK versions 1.7.1 build 2536 and earlier allows an attacker to crash any application embedding the SDK by supplying a specially crafted DNG file. The flaw is strictly a denial-of-service with no confidentiality or integrity impact, and requires a victim to open the malicious file, constraining realistic exposure to imaging pipelines or end-user applications that ingest untrusted DNG content. No public exploit code and no active exploitation have been identified at time of analysis.
Null pointer dereference in GPAC 26.02.0's nhmldump_send_frame function (src/filters/write_nhml.c) allows a local, low-privileged attacker to crash the application by supplying crafted media input to the NHML write filter. Impact is strictly limited to availability - a process-level denial of service with no confidentiality or integrity implications. A publicly available proof-of-concept exploit exists (GitHub issue #3596), though the vendor itself characterizes this class of issue as 'more bugs than vulns,' contextualizing it as a robustness fix rather than an urgent security incident.
NULL pointer dereference in the Zephyr RTOS MAX32xxx USB device controller driver (udc_max32.c) crashes devices running Zephyr v4.4.0 when a physically connected USB host aborts an in-flight EP0 control transfer by sending a new SETUP packet - a completely legal USB protocol action. The race condition between interrupt-queued transfer-completion events and asynchronous FIFO draining by the driver thread causes net_buf_add(NULL, ...) when udc_buf_get() returns NULL on an empty FIFO, producing a near-NULL pointer dereference and device fault. No active exploitation has been confirmed (not in CISA KEV), and no public proof-of-concept code has been identified at time of analysis; real-world risk is constrained by the physical access prerequisite and the specific MAX32xxx hardware dependency.
Insufficient intelligence to synthesize. CVE-2026-47709 description is marked unknown, CVSS vector is not available, CWE is not available, and no product name or affected versions are specified - only that Ubuntu reported it. Comprehensive vulnerability analysis requires description, CVSS vector, affected product details, and remediation data.
Denial-of-service via NULL pointer dereference in PipeWire's RAOP (Remote Audio Output Protocol) module affects Red Hat Enterprise Linux 8, 9, and 10. The RAOP module fails to enforce an upper bound on Content-Length values in incoming requests and does not validate the return value of pw_array_add(); when a sufficiently large Content-Length triggers an allocation failure, the unchecked NULL return causes a crash of the PipeWire daemon, resulting in complete loss of audio services. No special authentication is required from the adjacent network, and no public exploit or CISA KEV listing has been identified at time of analysis.
NULL pointer dereference in the Linux kernel's ASoC wm_adsp driver crashes the kernel when firmware controls are removed without a prior NULL check on private control data. Systems running affected kernel versions (5.16 through multiple stable branches) with Wolfson/Cirrus Logic ADSP hardware are exposed to local denial-of-service via kernel panic. No active exploitation has been identified, EPSS sits at 0.16% (6th percentile), and patches have been backported to all active stable branches.
NULL pointer dereference in the Linux kernel's ASoC SDCA (SoundWire Device Class for Audio) subsystem crashes the kernel during audio device cleanup, resulting in a denial of service. The `sdca_dev_unregister_functions()` routine iterates over SDCA function descriptors without validating for NULL entries, which can be present when function registration fails partway through or when device cleanup races with probe deferral. This crash was observed in practice on Lenovo ThinkPad X1 Carbon G14 (Panther Lake) systems where missing SOF firmware caused the SOF audio driver probe to fail, triggering the NULL dereference during subsequent SoundWire device teardown. No public exploit exists and EPSS sits at 0.14% (4th percentile), reflecting the hardware-specific and locally-triggered nature of this flaw.
NULL pointer dereference in the Linux kernel's Qualcomm Camera Control Interface (CCI) i2c driver crashes the kernel during driver removal on boards where only one of the two available I2C masters is initialized. Triggering device unbinding or module unloading on affected Qualcomm hardware configurations causes cci_remove() to call cci_halt() for both masters, dereferencing an uninitialized completion pointer for the disabled master and producing a kernel panic. No public exploit exists and EPSS is at the 6th percentile, indicating no meaningful exploitation activity; impact is limited to availability via local denial of service on specific Qualcomm SoC configurations.
NULL pointer dereference in the Linux kernel's Airoha QDMA network driver crashes the kernel when a misconfigured Device Tree Source (DTS) causes `of_reserved_mem_lookup()` to return NULL without a guard check. Systems running the `net/airoha` driver with a DTS referencing a non-existent or removed `memory-region` node in the reserved memory table trigger a kernel panic during driver initialization at `airoha_qdma_init_hfwd_queues()`. The impact is exclusively a local denial-of-service (system crash); no confidentiality or integrity compromise is possible. No public exploit exists and EPSS places exploitation probability at 0.15% (5th percentile), consistent with the highly specific hardware and configuration prerequisites.
NULL pointer dereference in the Linux kernel bonding subsystem crashes the kernel when a local user with CAP_NET_ADMIN invokes bond_do_ioctl() with a non-existent slave interface name. The slave_dbg() macro unconditionally dereferences slave_dev->name before the NULL guard is evaluated, producing a kernel oops and local denial-of-service. No public exploit has been identified and EPSS sits at 0.16% (6th percentile), indicating very low observed exploitation activity; patches are available across all active stable branches.
NULL pointer dereference in the Linux kernel's DAMON LRU Sort subsystem crashes the kernel when damon_ctx allocation fails under memory pressure. Affected are Linux kernel versions through 6.18 and 7.0.x before 7.0.13, where damon_lru_sort_enabled_store() omits a NULL check before passing the allocation result to damon_commit_ctx(). A local attacker with low privileges can trigger a kernel panic, causing a denial of service. No active exploitation is confirmed (not in CISA KEV), and EPSS sits at 0.17% (6th percentile), reflecting negligible observed exploitation activity.