Red Hat Linux Linux Kernel Vulnerabilities & Security Advisories
2147 advisories tracked · Red Hat Security Data API · 1 listed in the CISA Known Exploited Vulnerabilities catalog
Every row below is a published Red Hat Linux advisory that VulniPulse classified as Linux Kernel, with the CVEs, affected and fixed releases and exploitation status the vendor stated. Severity mix: 780 high, 1364 medium, 1 low.
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Latest Red Hat Linux Kernel advisories
Medium [CVE-2026-68279] fix OOB reads in remote DPCD/I2C sideband reply parsers
In the Linux kernel, the following vulnerability has been resolved: drm/dp/mst: fix OOB reads in remote DPCD/I2C sideband reply parsers drm_dp_sideband_parse_remote_dpcd_read() reads num_bytes from the raw message and then unconditionally does: memcpy(bytes, &raw->msg[idx], num_bytes); without checking that idx + num_bytes curlen. raw->msg[] is 256 bytes; if a malicious or misbehaving MST hub sets num_bytes larger than the remaining payload, the memcpy reads past the received data into whatever follows in raw->msg[]. drm_dp_sideband_parse_remote_i2c_read_ack() has the same flaw (noted with a /* TODO check */ comment since the code was introduced). Fix both functions by using a single combined check (idx + num_bytes > curlen) before each memcpy. Since num_bytes is u8, it is always >= 0, so this strictly subsumes the simpler idx > curlen form and no separate step is needed. [added missing fixes tag] A flaw was found in the Linux kernel's DisplayPort (DP) Multi-Stream Transport (MST) subsystem. A malicious or misbehaving MST hub could send a specially crafted sideband message that causes an out-of-bounds read in the `drm_dp_sideband_parse_remote_dpcd_read()` and `drm_dp_sideband_parse_remote_i2c_read_ack()` functions. This vulnerability allows the system to read past the intended data, potentially leading to information disclosure or system instability.
Medium [CVE-2026-68275] check amdgpu_vm_bo_find result in GET_MAPPING_INFO
In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: check amdgpu_vm_bo_find() result in GET_MAPPING_INFO The AMDGPU_GEM_OP_GET_MAPPING_INFO path of amdgpu_gem_op_ioctl() looks up the bo_va for the buffer object in the caller's VM via amdgpu_vm_bo_find(), but uses the returned pointer without checking it. amdgpu_vm_bo_find() returns NULL when the BO has no bo_va in that VM, which is the normal case for a BO that has never been mapped. The result is fed straight into amdgpu_vm_bo_va_for_each_valid_mapping(), which expands to list_for_each_entry(mapping, &(bo_va)->valids, list) and dereferences bo_va, causing a NULL pointer dereference. This is reachable by any process able to issue the ioctl (render group) simply by requesting mapping info for an unmapped BO. Return -ENOENT when no bo_va is found, jumping to out_exec so the drm_exec context and GEM object reference are released. (cherry picked from commit 528b19377affc1cc7362a70a254c1dda793595f9) A local attacker, with the ability to issue ioctl commands to the render group, could trigger a null pointer dereference by requesting mapping information for an unmapped buffer object. This could lead to a system crash, resulting in a denial of service. This issue affects AMDGPU GEM ioctl. Systems without AMD GPUs are not affected.
Medium [CVE-2026-68272] validate CP_GFX_SHADOW chunk size in CS pass1
In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: validate CP_GFX_SHADOW chunk size in CS pass1 Add a minimum-length check for the AMDGPU_CHUNK_ID_CP_GFX_SHADOW chunk in amdgpu_cs_pass1(), matching the gate already present for the IB, FENCE and BO_HANDLES chunk types. The CP_GFX_SHADOW case previously shared a bare break with the dependency and syncobj chunk types, which do not dereference a fixed-size struct. When userspace submits this chunk with length_dw == 0, vmemdup_array_user() is called with size 0 and returns ZERO_SIZE_PTR, which passes the IS_ERR() check. amdgpu_cs_p2_shadow() then dereferences chunk->kdata as a struct drm_amdgpu_cs_chunk_cp_gfx_shadow (reading shadow->flags), faulting on the ZERO_SIZE_PTR and causing a NULL-pointer dereference. This is reachable by an unprivileged process in the render group. Reject undersized chunks with -EINVAL during pass1 so the bad submission is rejected before pass2 ever dereferences the data. (cherry picked from commit 7f61b2eef7415eccdb40850aca0de94211948657) An unprivileged local attacker can exploit this vulnerability by submitting a specially crafted command with a zero-length chunk size for `CP_GFX_SHADOW`. This leads to improper memory access within the kernel, causing a system crash and a denial of service (DoS). This issue affects AMDGPU command submission.
Medium [CVE-2026-68271] fix reversed error cleanup order in ucopy functions
In the Linux kernel, the following vulnerability has been resolved: drm/nouveau: fix reversed error cleanup order in ucopy functions nouveau_uvmm_vm_bind_ucopy() and nouveau_exec_ucopy() place their error cleanup labels in allocation order rather than reverse allocation order. On a u_memcpya() failure for in_sync.s, the goto to err_free_ops (or err_free_pushs) frees the first allocation and then falls through to err_free_ins, which calls u_free() on args->in_sync.s. Since args->in_sync.s still holds the ERR_PTR returned by the failed u_memcpya(), and ERR_PTR values are not caught by ZERO_OR_NULL_PTR(), kvfree() proceeds to dereference it, which can result in a kernel oops. A failure for out_sync.s instead jumps to err_free_ins and skips freeing the first allocation, leading to a memory leak. Fix by swapping the cleanup label order so resources are freed in the correct reverse allocation sequence. An issue with the error cleanup order in `ucopy` functions can lead to incorrect memory deallocation. This can result in a system crash, also known as a kernel oops, or a memory leak, potentially causing a denial of service. This issue affects NVIDIA nouveau GPUs. ucopy error paths free resources in allocation order instead of reverse order, causing double-free. Systems without nouveau are not affected.
Medium [CVE-2026-68270] Avoid possible truncation with calculating visible size
In the Linux kernel, the following vulnerability has been resolved: drm/sysfb: Avoid possible truncation with calculating visible size Calculating the visible size of the system framebuffer can result in truncation of the result. The calculation uses 32-bit arithmetics, which can overflow if the values for height and stride are large. Fix the issue by multiplying with mul_u32_u32(). This overflow leads to truncation of the result, potentially causing incorrect size calculations that could result in system instability or a denial of service (DoS). Systems using drm/sysfb with very large framebuffers. Red Hat severity: Moderate — CVSS 5.5 (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H). Weakness: CWE-190. Affected Red Hat products: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 9. Red Hat does not currently list a fixing RHSA for this CVE. Affected products named by the advisory: Red Hat package: kernel-rt.
Medium [CVE-2026-68269] Add missing nospec on parallel submit slot
In the Linux kernel, the following vulnerability has been resolved: drm/i915/gem: Add missing nospec on parallel submit slot Add missing Spectre mitigation for userspace controlled parallel submission slot. Discovered using AI-assisted static analysis confirmed by Intel Product Security. (cherry picked from commit 15b9353deff3cf72331c387780de3cf9c316b643) This vulnerability allows for a side-channel attack, which could lead to the unauthorized disclosure of sensitive information. Systems without Intel graphics are not affected. Red Hat severity: Moderate — CVSS 5.5 (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H). Weakness: CWE-515. Affected Red Hat products: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9. Red Hat does not currently list a fixing RHSA for this CVE. Affected products named by the advisory: Red Hat package: kernel-rt.
Medium [CVE-2026-68268] Return error on non-migratable faults requiring devmem
In the Linux kernel, the following vulnerability has been resolved: drm/xe: Return error on non-migratable faults requiring devmem Non-migratable faults that require devmem incorrectly jump to the 'out' label, which squashes the error code intended to be returned to the upper layers. Fix this by returning -EACCES instead. (cherry picked from commit c4508edb2c723de93717272488ea65b165637eac) Non-migratable faults requiring device memory (devmem) incorrectly suppress error codes, preventing them from being returned to higher layers of the system. This improper error handling could lead to unexpected system behavior or resource issues, potentially resulting in a denial of service. Error codes were squashed by jumping to a shared out label, masking -EACCES from upper layers. Systems without Intel Xe are not affected. Red Hat severity: Low — CVSS 5.5 (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H). Weakness: CWE-252. Affected Red Hat products: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 9. Red Hat does not currently list a fixing RHSA for this CVE. Affected products named by the advisory: Red Hat package: kernel-rt.
Medium [CVE-2026-68262] Fix user array stride in pvr_set_uobj_array
In the Linux kernel, the following vulnerability has been resolved: drm/imagination: Fix user array stride in pvr_set_uobj_array() pvr_set_uobj_array() copies an array of kernel objects to a userspace array whose element size is described by out->stride. When out->stride is different from the kernel object size, the slow path advances the userspace pointer by the kernel object size and the kernel pointer by the userspace stride. This reverses the intended layout. For larger userspace strides, later copies read from the wrong kernel addresses. The padding clear is also done only for the first element instead of the padding area for each element. Advance the userspace pointer by out->stride and the kernel pointer by obj_size, and clear per-element padding while the current userspace pointer is still available. This error causes incorrect memory access, leading to memory corruption where data is written to unintended locations, or information disclosure where sensitive kernel data is read from incorrect addresses. A local attacker could potentially leverage this to gain elevated privileges or cause a system crash (Denial of Service). This issue affects Imagination PowerVR GPUs. pvr_set_uobj_array() uses wrong user stride when copying to userspace. Systems without PowerVR hardware are not affected.
Medium [CVE-2026-68260] acquire vm_ctx->lock before mapping memory to GPU VM
In the Linux kernel, the following vulnerability has been resolved: drm/imagination: acquire vm_ctx->lock before mapping memory to GPU VM The drm gpuvm code doesn't protect find operation against map operation, and the driver needs to ensure a map operation shouldn't happen when a find operation is in progress. In some cases a find operation will be in progress when doing map/unmap operations, and the find operation will do a NULL pointer dereference. An example of the stack trace of such NULL dereference is shown below: ``` Unable to handle kernel access to user memory without uaccess routines at virtual address 0000000000000010 [] drm_gpuva_find+0x28/0x6c [drm_gpuvm] [] pvr_vm_unmap+0x34/0x68 [powervr] [] pvr_ioctl_vm_unmap+0x2e/0x50 [powervr] [] drm_ioctl_kernel+0x8e/0xdc [] drm_ioctl+0x1be/0x3e0 [] __riscv_sys_ioctl+0xba/0xc4 [] do_trap_ecall_u+0x23e/0x3f4 [] handle_exception+0x168/0x174 ``` As all occurences of drm_gpuva_find*() are already guarded by vm_ctx->lock, make pvr_vm_map() to acquire this lock to prevent disturbing any find operation. This fixes the NULL deference problem in drm_gpuva_find*(). This vulnerability occurs because the graphics processing unit virtual memory (GPU VM) code does not properly synchronize `find` and `map/unmap` operations. Affected products named by the advisory: Red Hat Enterprise Linux for NVIDIA 26; Red Hat package: kernel.
Medium [CVE-2026-68258] Check bounds on CRIU restore queue type and mqd size
In the Linux kernel, the following vulnerability has been resolved: drm/amdkfd: Check bounds on CRIU restore queue type and mqd size We weren't checking whether the values provided in the private data in kfd CRIU restore were within bounds. For queue type, add a KFD_QUEUE_TYPE_MAX and ensure the provided type is less than it. For mqd_size, add new function mqd_size_from_queue_type and confirm that the provided mqd_size matches expectations. (cherry picked from commit f19d8086f6644083c913d70bfdeee20e1b6f46a5) This vulnerability allows a local attacker to provide out-of-bounds values in the private data during a kfd CRIU restore operation. This improper input validation could lead to a memory safety issue, potentially resulting in a denial of service or information disclosure. Requires KFD compute and CRIU restore capability. Red Hat severity: Moderate — CVSS 5.5 (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H). Weakness: CWE-787. Affected Red Hat products: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9; Red Hat Enterprise Linux for NVIDIA 26; Red Hat OpenShift Container Platform 4. Will not fix / out of support: Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux for NVIDIA 26.
Medium [CVE-2026-68256] DP alt mode timeout path leaks prev_sink reference
In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: detect_link_and_local_sink: DP alt mode timeout path leaks prev_sink reference prev_sink is unconditionally retained via dc_sink_retain at function entry, but the DP alt mode timeout path inside SIGNAL_TYPE_DISPLAY_PORT returns false without releasing prev_sink. All other return paths in the function correctly call dc_sink_release(prev_sink), making this the only missing cleanup. (cherry picked from commit 45510cf662dcf46b5d8926d454f338809f107b9d) This missing cleanup can lead to a memory leak, potentially resulting in a Denial of Service (DoS) due to resource exhaustion. This issue affects systems using the AMDGPU display stack with DisplayPort alt mode detection. Systems without AMD GPUs are not affected. Red Hat severity: Low — CVSS 5.5 (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H). Weakness: CWE-772. Affected Red Hat products: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9. Red Hat does not currently list a fixing RHSA for this CVE. Affected products named by the advisory: Red Hat package: kernel-rt.
Medium [CVE-2026-68255] bound EDID block reads to the response buffer
In the Linux kernel, the following vulnerability has been resolved: drm/virtio: bound EDID block reads to the response buffer virtio_get_edid_block() validates the read offset only against the device-supplied resp->size field, never against the fixed-size resp->edid array. The EDID block index is driven by the device-supplied extension count, so a malicious virtio-gpu backend can advertise a large size together with a high block count and read far past the array into adjacent kernel memory, which is then surfaced in the parsed EDID (an out-of-bounds read / info leak). Also reject any read whose end exceeds the size of the edid array. Conforming EDID responses stay within the array and are unaffected. This leads to information disclosure, where sensitive kernel memory contents are exposed. This issue affects virtio-gpu guests. virtio_get_edid_block() does not bound reads to the fixed EDID response array; a malicious hypervisor backend can trigger OOB read. Red Hat severity: Moderate — CVSS 5.5 (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H). Weakness: CWE-125. Affected Red Hat products: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 9. Red Hat does not currently list a fixing RHSA for this CVE. Affected products named by the advisory: Red Hat package: kernel-rt.
Medium [CVE-2026-68254] require valid min/max vfreq for VRR
In the Linux kernel, the following vulnerability has been resolved: drm/i915/vrr: require valid min/max vfreq for VRR Ensure the EDID provided min/max vfreq are valid. Most scenarios are already covered (by coincidence) through the checks in intel_vrr_is_capable() and intel_vrr_is_in_range(), but be more explicit about it. At worst, a zero min_vfreq could lead to a division by zero in intel_vrr_compute_vmax(). Discovered using AI-assisted static analysis confirmed by Intel Product Security. (cherry picked from commit 1765cf59f517b02f3b0591fe5120930d08bddeb6) An attacker could provide a specially crafted Extended Display Identification Data (EDID) with a zero minimum vertical refresh rate (min_vfreq). This issue affects Intel i915 systems with Variable Refresh Rate (VRR). A malformed EDID with zero min_vfreq can cause division-by-zero in VRR calculations. Systems without Intel graphics or VRR are not affected. Red Hat severity: Low — CVSS 5.5 (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H). Weakness: CWE-369. Affected Red Hat products: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9. Red Hat does not currently list a fixing RHSA for this CVE. Affected products named by the advisory: Red Hat package: kernel-rt.
Medium [CVE-2026-68250] replace BUG_ON with WARN_ON
In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu/sdma5.2: replace BUG_ON() with WARN_ON() There's no need to crash the kernel for these cases. (cherry picked from commit ae658afc7f47f6147371ec42cc6b1a793dfdb5af) A local attacker could potentially trigger a condition that would previously lead to a kernel panic due to a `BUG_ON()` macro. This vulnerability could result in a system-wide Denial of Service (DoS), making the system unresponsive. The issue has been resolved by replacing the `BUG_ON()` with `WARN_ON()`, which logs a warning instead of crashing the kernel. This issue affects AMDGPU SDMA 5.2. Certain error paths used BUG_ON(), forcing kernel panic. Systems without AMD GPUs are not affected. Red Hat severity: Low — CVSS 5.5 (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H). Weakness: CWE-617. Affected Red Hat products: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9; Red Hat OpenShift Container Platform 4. Will not fix / out of support: Red Hat Enterprise Linux 6. Red Hat does not currently list a fixing RHSA for this CVE. Affected products named by the advisory: Red Hat package: kernel-rt.
Medium [CVE-2026-68249] replace BUG_ON with WARN_ON
In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu/sdma5.0: replace BUG_ON() with WARN_ON() There's no need to crash the kernel for these cases. (cherry picked from commit 8d144a0eb09537055841af48c9e7c2d4cd48e84d) This issue occurs when certain conditions trigger a `BUG_ON()` macro, which is designed to halt system execution upon detecting a critical error. A local attacker could exploit this to cause a kernel crash, leading to a denial of service (DoS) by making the system unavailable. This issue affects AMDGPU SDMA 5.0. Certain error paths used BUG_ON(), forcing kernel panic. A local user exercising those GPU paths could trigger denial of service. Systems without AMD GPUs are not affected. Red Hat severity: Low — CVSS 5.5 (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H). Weakness: CWE-617. Affected Red Hat products: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9; Red Hat OpenShift Container Platform 4. Will not fix / out of support: Red Hat Enterprise Linux 6. Red Hat does not currently list a fixing RHSA for this CVE. Affected products named by the advisory: Red Hat package: kernel-rt.
Medium [CVE-2026-68248] Return NULL on error in active_instance
In the Linux kernel, the following vulnerability has been resolved: drm/i915: Return NULL on error in active_instance Avoid returning &node->base when node is NULL due to OOM during GFP_ATOMIC allocation. Discovered using AI-assisted static analysis confirmed by Intel Product Security. (cherry picked from commit 6029bc064f0b1bac184203a50fbaaf070fa18832) This vulnerability occurs when the system experiences an Out-Of-Memory (OOM) condition during a specific memory allocation. An attacker could potentially trigger this condition, leading to an improper return value and causing a system crash, resulting in a Denial of Service (DoS). Returns address of NULL node container during GFP_ATOMIC allocation failure. Systems without Intel graphics are not affected. Red Hat severity: Moderate — CVSS 5.5 (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H). Weakness: CWE-476. Affected Red Hat products: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9. Red Hat does not currently list a fixing RHSA for this CVE. Affected products named by the advisory: Red Hat package: kernel-rt.
Medium [CVE-2026-68247] range check LFP Data Block panel_type2
In the Linux kernel, the following vulnerability has been resolved: drm/i915/bios: range check LFP Data Block panel_type2 While the panel_type from LFP Data Block is range checked, panel_type2 is not. Add a few helpers for range checking, and use them to not only check panel_type2, but also improve clarity and correctness in the panel type selection. Discovered using AI-assisted static analysis confirmed by Intel Product Security. v2: - Fix commit message typo (Michał) - Add is_panel_type_pnp() (Ville) (cherry picked from commit c9ebe5d2f25729d6cfbbb1235d640bf67f9275df) This component, responsible for display-related operations, failed to perform a necessary range check on the `panel_type2` field within the LFP Data Block. This oversight could result in the selection of an incorrect panel type, potentially impacting display functionality or system stability. This issue affects Intel i915 display BIOS parsing. Systems without Intel graphics are not affected. Red Hat severity: Moderate — CVSS 5.5 (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H). Weakness: CWE-1285. Affected Red Hat products: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9; Red Hat Enterprise Linux for NVIDIA 26. Red Hat lists Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7; Red Hat OpenShift Container Platform 4 as not affected.
Medium [CVE-2026-68246] replace BUG_ON with WARN_ON
In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu/gfx11: replace BUG_ON() with WARN_ON() There's no need to crash the kernel for these cases. (cherry picked from commit daa62107452d2451787c4248ca38fa2d1a0cbefd) A vulnerability in the `drm/amdgpu/gfx11` graphics driver could cause the system to crash. This issue arises from a condition that, when met, would trigger an error-handling mechanism designed to halt the kernel (BUG_ON()). An attacker with local access could potentially exploit this to cause a Denial of Service (DoS), rendering the system unusable. The fix replaces this critical error halt with a warning (WARN_ON()), preventing system instability. This issue affects AMDGPU GFX11 hardware. BUG_ON() on error paths forces kernel panic. Systems without AMD GPUs are not affected. Red Hat severity: Moderate — CVSS 5.5 (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H). Weakness: CWE-617. Affected Red Hat products: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9; Red Hat OpenShift Container Platform 4. Will not fix / out of support: Red Hat Enterprise Linux 6. Red Hat does not currently list a fixing RHSA for this CVE. Affected products named by the advisory: Red Hat package: kernel-rt.
Medium [CVE-2026-68244] Do not leak siblings on proto context error
In the Linux kernel, the following vulnerability has been resolved: drm/i915/gem: Do not leak siblings[] on proto context error After a successful BALANCE/PARALLEL_SUBMIT extension on context creation, error during processing of next user extension leaks the siblings[] array. Fix that. Discovered using AI-assisted static analysis confirmed by Intel Product Security. (cherry picked from commit aa65e0a4b51b3b54b53e4142aaa2d997aa1061ff) An attacker could potentially exploit this to cause resource exhaustion, leading to a Denial of Service (DoS). Systems without Intel graphics are not affected. Red Hat severity: Moderate — CVSS 5.5 (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H). Weakness: CWE-772. Affected Red Hat products: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9. Red Hat does not currently list a fixing RHSA for this CVE. Affected products named by the advisory: Red Hat package: kernel-rt.
Medium [CVE-2026-68243] Fix NULL deref in I915_CONTEXT_PARAM_SSEU
In the Linux kernel, the following vulnerability has been resolved: drm/i915/gem: Fix NULL deref in I915_CONTEXT_PARAM_SSEU Setting context engine slot N into I915_ENGINE_CLASS_INVALID / I915_ENGINE_CLASS_INVALID_NONE and attempting to apply I915_CONTEXT_PARAM_SSEU to the same slot N will deref NULL. Discovered using AI-assisted static analysis confirmed by Intel Product Security. (cherry picked from commit 36eda5b5c2d40da41cc0a5403c26986237cf9e87) A local attacker could trigger a NULL dereference by setting a context engine slot to an invalid class and then attempting to apply specific parameters to that slot. This could lead to a system crash, resulting in a Denial of Service (DoS). This issue affects Intel i915 graphics. Systems without Intel graphics are not affected. Red Hat severity: Moderate — CVSS 5.5 (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H). Weakness: CWE-476. Affected Red Hat products: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9. Red Hat does not currently list a fixing RHSA for this CVE. Affected products named by the advisory: Red Hat package: kernel-rt.