{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-98391","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-09-25T10:25:14.346Z","datePublished":"2026-10-14T13:25:55.498Z","dateUpdated":"2026-10-19T09:18:42.391Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-10-19T09:18:42.391Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/xe: Guard page-fault worker with runtime PM check\n\nDuring VM teardown, the VM's runtime PM reference is dropped\nasynchronously, allowing the device to autosuspend while stale page\nfaults belonging to the now-dead VM are still queued. When the\npage-fault worker later tries to ack one of these, it calls into\nguc_ct_send_locked() on an already-suspended device, tripping:\n\n  Assertion `!xe_pm_runtime_suspended(xe)` failed!\n  WARNING at xe_device.c:1267 xe_device_assert_mem_access+0x11c/0x140 [xe]\n\nA live VM/exec queue always holds a PM reference while it has\noutstanding work, so if the device is suspended at ack time, the\nowning context is already gone and the fault is stale.\n\nTake a runtime PM reference across the entire pagefault\nqueue worker to safely deliver acks for torn-down VMs.\n\nv3:\n - Move PM ref to the generic xe_pagefault_queue_work using\n   guard(xe_pm_runtime)(xe) instead of tracking it in the GuC\n   backend(Matt Brost).\n\nv2:\n - Hold PM ref across the entire batch (begin/end) instead of per-ack.\n   This prevents the device from autosuspending mid-batch, which would\n   leave write_only acks written but the end flush skipped, and skip\n   counter++, desyncing the cadence check.(Himal)\n - Add a comment explaining stale faults.(Himal)\n\n(cherry picked from commit fcc2431d2213dc4d04250c4f1ae87d9c3ae0d455)\n[Rodrigo: Added xe_device struct for compatibility while cherry-picking]"}],"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_pagefault.c","drivers/gpu/drm/xe/xe_pagefault_types.h"],"versions":[{"version":"f289f7807119128d4f9d59f34ac557549c7562e5","lessThan":"25764620ec64c0142e2c87c41787f45540cf09ff","status":"affected","versionType":"git"},{"version":"f289f7807119128d4f9d59f34ac557549c7562e5","lessThan":"20fce5b34b21a995839743b4917a1edd2fd503ba","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_pagefault.c","drivers/gpu/drm/xe/xe_pagefault_types.h"],"versions":[{"version":"6.19","status":"affected"},{"version":"0","lessThan":"6.19","status":"unaffected","versionType":"semver"},{"version":"7.2.7","lessThanOrEqual":"7.2.*","status":"unaffected","versionType":"semver"},{"version":"7.3","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":"6.19","versionEndExcluding":"7.2.7"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.19","versionEndExcluding":"7.3"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/25764620ec64c0142e2c87c41787f45540cf09ff"},{"url":"https://git.kernel.org/stable/c/20fce5b34b21a995839743b4917a1edd2fd503ba"}],"title":"drm/xe: Guard page-fault worker with runtime PM check","x_generator":{"engine":"bippy-1.2.0"}}}}