222 lines
12 KiB
JSON
222 lines
12 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2026-93192",
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"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"state": "PUBLISHED",
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"assignerShortName": "Linux",
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"dateReserved": "2026-09-17T16:02:15.092Z",
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"datePublished": "2026-09-17T16:12:16.428Z",
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"dateUpdated": "2026-10-30T12:36:19.527Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"shortName": "Linux",
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"dateUpdated": "2026-10-30T12:36:19.527Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/v3d: Clear queue->active_job when v3d_fence_create() fails\n\nThe run_job() callbacks for BIN, RENDER, TFU and CSD assign the incoming\njob to queue->active_job before calling v3d_fence_create(). If\nv3d_fence_create() fails, the callback returns NULL without clearing\nactive_job, leaving a dangling pointer.\n\nCreate a failure path in all run_job() callbacks that clears the active\njob before returning NULL. The BIN path takes queue->queue_lock around the\nclear as it races against v3d_overflow_mem_work(); RENDER, TFU and CSD\npaths have no concurrent reader, so the clear is lock-free."
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}
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],
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"metrics": [
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{
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"cvssV3_1": {
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"version": "3.1",
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"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
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"baseScore": 7.8,
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"baseSeverity": "HIGH"
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},
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"scenarios": [
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{
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"lang": "en",
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"value": "AV:L - The dangling queue->active_job is created in v3d_bin_job_run/v3d_render_job_run/v3d_tfu_job_run/v3d_csd_job_run after DRM_IOCTL_V3D_SUBMIT_CL (v3d_submit_cl_ioctl), DRM_IOCTL_V3D_SUBMIT_TFU, or DRM_IOCTL_V3D_SUBMIT_CSD on /dev/dri/renderD* queues a job through v3d_push_job; the trigger is that local ioctl, not a remote protocol message.\nAC:L - v3d_fence_create() fails only on kzalloc of struct v3d_fence; the attacker submits the job first so ioctl-time allocations succeed, then applies memory pressure so the scheduler worker hits GFP_KERNEL ENOMEM, and can also drive v3d_overflow_mem_work via a BCL that raises V3D_INT_OUTOMEM, controlling both the failure and the UAF consumer.\nPR:L - v3d_submit_cl_ioctl/v3d_submit_tfu_ioctl/v3d_submit_csd_ioctl are DRM_RENDER_ALLOW|DRM_AUTH with no capable() check; drm_ioctl_permit() treats render-node clients as authenticated, so an unprivileged Raspberry Pi/video-group user (or GPU-passthrough container) with /dev/dri/renderD* can reach the run_job callbacks.\nUI:N - The attacker opens the render node and issues their own SUBMIT_CL/SUBMIT_TFU/SUBMIT_CSD ioctls plus memory pressure; no other user must mount media, open a file, or otherwise interact.\nS:U - The use-after-free is of a host-kernel v3d_job left in queue->active_job and later used by v3d_overflow_mem_work/v3d_irq_signal_fence, which is local kernel heap corruption/privilege escalation, not a KVM/Xen escape or IOMMU/DMA boundary bypass.\nC:H - After drm_sched_job_done/v3d_sched_job_free kfree's the job, v3d_overflow_mem_work still reads bin_job->render and v3d_irq_signal_fence reads active_job->irq_fence and stats from the freed slab, so heap reuse of the v3d_job yields an arbitrary kernel read.\nI:H - v3d_overflow_mem_work does list_add_tail(&bo->unref_head, &bin_job->render->unref_list) through the freed job, so spraying a replacement v3d_bin_job with a chosen render pointer is an arbitrary list-write; v3d_job_update_stats() likewise writes into the freed object.\nA:H - Dereferencing the dangling queue->active_job in v3d_irq_signal_fence (IRQ context) or v3d_overflow_mem_work after v3d_job_free() oopses or panics the kernel, matching other v3d active-job UAFs that produced fatal exceptions in v3d_irq()."
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}
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]
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}
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],
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"affected": [
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "unaffected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"drivers/gpu/drm/v3d/v3d_sched.c"
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],
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"versions": [
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{
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"version": "a783a09ee76d6259296dc6aeea2b6884fa526980",
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"lessThan": "dc0fba19ef518920073d1d639317b2dd8266fe5e",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "a783a09ee76d6259296dc6aeea2b6884fa526980",
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"lessThan": "1f661f42beb558b2d21882f0cd527ed6c8e7e749",
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"status": "affected",
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"versionType": "git"
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{
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"lessThan": "bdeb73d7312100e00c3e643ff233f09b6ec114aa",
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"status": "affected",
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"versionType": "git"
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{
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"version": "a783a09ee76d6259296dc6aeea2b6884fa526980",
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"lessThan": "3a8aa74859dd73eaa76c55eb74da708e56ef51c5",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "a783a09ee76d6259296dc6aeea2b6884fa526980",
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"lessThan": "0b9878aba5cf93bc2b55ba9eb807757ce3239bec",
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"status": "affected",
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"versionType": "git"
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{
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"version": "a783a09ee76d6259296dc6aeea2b6884fa526980",
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"lessThan": "25a1669907512e927fab9ad4d4fb74ff57f63cd9",
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"status": "affected",
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"versionType": "git"
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}
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]
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},
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "affected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"drivers/gpu/drm/v3d/v3d_sched.c"
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],
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"versions": [
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{
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"version": "5.3",
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"status": "affected"
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},
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{
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"version": "0",
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"lessThan": "5.3",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.1.191",
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"lessThanOrEqual": "6.1.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.6.160",
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"lessThanOrEqual": "6.6.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.12.110",
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"lessThanOrEqual": "6.12.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.18.52",
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"lessThanOrEqual": "6.18.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "7.2.6",
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"lessThanOrEqual": "7.2.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "7.3",
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"lessThanOrEqual": "*",
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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}
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]
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}
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],
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"cpeApplicability": [
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{
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"nodes": [
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.3",
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"versionEndExcluding": "6.1.191"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.3",
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"versionEndExcluding": "6.6.160"
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]
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}
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],
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/dc0fba19ef518920073d1d639317b2dd8266fe5e"
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},
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{
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"url": "https://git.kernel.org/stable/c/1f661f42beb558b2d21882f0cd527ed6c8e7e749"
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},
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{
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"url": "https://git.kernel.org/stable/c/bdeb73d7312100e00c3e643ff233f09b6ec114aa"
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},
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{
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"url": "https://git.kernel.org/stable/c/3a8aa74859dd73eaa76c55eb74da708e56ef51c5"
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},
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{
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"url": "https://git.kernel.org/stable/c/0b9878aba5cf93bc2b55ba9eb807757ce3239bec"
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},
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{
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"url": "https://git.kernel.org/stable/c/25a1669907512e927fab9ad4d4fb74ff57f63cd9"
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}
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],
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"title": "drm/v3d: Clear queue->active_job when v3d_fence_create() fails",
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"x_generator": {
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"engine": "bippy-1.2.0"
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} |