{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-98310", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-25T10:25:14.338Z", "datePublished": "2026-10-06T08:46:06.767Z", "dateUpdated": "2026-10-06T08:46:06.767Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-06T08:46:06.767Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/xe/shrinker: Take a runtime PM ref before shrinking non-system memory\n\n__xe_shrinker_walk() walks the SYSTEM and TT LRUs without a runtime PM\nreference. Shrinking a bo outside system memory invalidates its GPU\nmappings, which needs the device resumed, so while it is runtime\nsuspended the page table zap trips an assert and the TLB invalidation\nreturns -ENODEV:\n\n WARNING: drivers/gpu/drm/xe/xe_bo.c:770 at xe_bo_move_notify+0x1fc/0x450 [xe]\n xe_bo_shrink+0x20f/0x2b0 [xe]\n __xe_shrinker_walk+0x174/0x410 [xe]\n xe_shrinker_scan+0x10c/0x1e0 [xe]\n do_shrink_slab+0x176/0x7e0\n drop_caches_sysctl_handler+0x9c/0xf0\n\nTake a reference before walking a memory type other than XE_PL_SYSTEM\nand stop there if it cannot be acquired. Reuse the shrinker's existing\nacquire path, which resumes the device directly where reclaim allows\nthat and otherwise queues the PM worker for a later scan. Stop the walk\nonce the scan target is met, so a satisfied scan does not wake the\ndevice. System memory is still reclaimed while the device is suspended.\n\nGate this on xe_device_is_l2_flush_optimized(), the same condition under\nwhich xe_bo_trigger_rebind() issues the invalidation for a non-fault-mode\nvm, so reclaim is unaffected elsewhere. The System CCS copy already has\nits own reference in xe_bo_shrink().\n\nOnly a non-fault-mode vm can reach this, since a fault-mode vm requires\nLR mode and that holds a runtime PM reference for the vm's lifetime.\n\nReproduced with igt@xe_madvise@dontneed-before-exec while the GPU is\nruntime suspended.\n\nv2: simplify needs_rpm check. (Matt)\n retarget Fixes tag since the issue occurs with the non-fault-mode\n path added by 4e7ebff69aed.\nv3: handle this in xe_shrinker.c instead of xe_bo.c (Thomas)\nv4: stop the walk once the scan target is met. (Sashiko)\nv5: rebase on the freed page accounting fix. (Sashiko)\nv6: reuse the shrinker acquire path so runtime pm can be resumed\n directly instead of always queueing a worker. (Thomas)\nv7: replace xe_pm_runtime_put() with xe_shrinker_runtime_pm_put(). (Thomas)\n\n(cherry picked from commit 628f92b28bf4c371c10207daf6fc4caee0c0db2e)"}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/gpu/drm/xe/xe_shrinker.c"], "versions": [{"version": "4e7ebff69aed345f65f590a17b3119c0cb5eadde", "lessThan": "b7f4d2588b1342bb190c04b3d7a32560f206c74c", "status": "affected", "versionType": "git"}, {"version": "4e7ebff69aed345f65f590a17b3119c0cb5eadde", "lessThan": "985862be16c7e4da808c51f393d631fb60c0be5c", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/gpu/drm/xe/xe_shrinker.c"], "versions": [{"version": "7.1", "status": "affected"}, {"version": "0", "lessThan": "7.1", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.8", "lessThanOrEqual": "7.2.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.3-rc4", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "7.1", "versionEndExcluding": "7.2.8"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "7.1", "versionEndExcluding": "7.3-rc4"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/b7f4d2588b1342bb190c04b3d7a32560f206c74c"}, {"url": "https://git.kernel.org/stable/c/985862be16c7e4da808c51f393d631fb60c0be5c"}], "title": "drm/xe/shrinker: Take a runtime PM ref before shrinking non-system memory", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/gpu/drm/xe/xe_shrinker.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "b7f4d2588b1342bb190c04b3d7a32560f206c74c", "status": "affected", "version": "4e7ebff69aed345f65f590a17b3119c0cb5eadde", "versionType": "git"}, {"lessThan": "985862be16c7e4da808c51f393d631fb60c0be5c", "status": "affected", "version": "4e7ebff69aed345f65f590a17b3119c0cb5eadde", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/gpu/drm/xe/xe_shrinker.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "7.1"}, {"lessThan": "7.1", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.8", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.3-rc4", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/xe/shrinker: Take a runtime PM ref before shrinking non-system memory\n\n__xe_shrinker_walk() walks the SYSTEM and TT LRUs without a runtime PM\nreference. Shrinking a bo outside system memory invalidates its GPU\nmappings, which needs the device resumed, so while it is runtime\nsuspended the page table zap trips an assert and the TLB invalidation\nreturns -ENODEV:\n\n WARNING: drivers/gpu/drm/xe/xe_bo.c:770 at xe_bo_move_notify+0x1fc/0x450 [xe]\n xe_bo_shrink+0x20f/0x2b0 [xe]\n __xe_shrinker_walk+0x174/0x410 [xe]\n xe_shrinker_scan+0x10c/0x1e0 [xe]\n do_shrink_slab+0x176/0x7e0\n drop_caches_sysctl_handler+0x9c/0xf0\n\nTake a reference before walking a memory type other than XE_PL_SYSTEM\nand stop there if it cannot be acquired. Reuse the shrinker's existing\nacquire path, which resumes the device directly where reclaim allows\nthat and otherwise queues the PM worker for a later scan. Stop the walk\nonce the scan target is met, so a satisfied scan does not wake the\ndevice. System memory is still reclaimed while the device is suspended.\n\nGate this on xe_device_is_l2_flush_optimized(), the same condition under\nwhich xe_bo_trigger_rebind() issues the invalidation for a non-fault-mode\nvm, so reclaim is unaffected elsewhere. The System CCS copy already has\nits own reference in xe_bo_shrink().\n\nOnly a non-fault-mode vm can reach this, since a fault-mode vm requires\nLR mode and that holds a runtime PM reference for the vm's lifetime.\n\nReproduced with igt@xe_madvise@dontneed-before-exec while the GPU is\nruntime suspended.\n\nv2: simplify needs_rpm check. (Matt)\n retarget Fixes tag since the issue occurs with the non-fault-mode\n path added by 4e7ebff69aed.\nv3: handle this in xe_shrinker.c instead of xe_bo.c (Thomas)\nv4: stop the walk once the scan target is met. (Sashiko)\nv5: rebase on the freed page accounting fix. (Sashiko)\nv6: reuse the shrinker acquire path so runtime pm can be resumed\n directly instead of always queueing a worker. (Thomas)\nv7: replace xe_pm_runtime_put() with xe_shrinker_runtime_pm_put(). (Thomas)\n\n(cherry picked from commit 628f92b28bf4c371c10207daf6fc4caee0c0db2e)"}], "id": "CVE-2026-98310", "lastModified": "2026-10-06T09:18:22.440", "metrics": {}, "published": "2026-10-06T09:18:22.440", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/985862be16c7e4da808c51f393d631fb60c0be5c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/b7f4d2588b1342bb190c04b3d7a32560f206c74c"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{}

{"created": "2026-10-06T14:00:20.949526+00:00", "updated": "2026-10-06T14:00:20.949532+00:00", "vendors": [], "weaknesses": ["CWE-665"]}