drm/xe: Reject page faults from non-fault-mode scratch VMs

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Summary

CVECVE-2026-90064
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-17 17:16:55 UTC
Updated2026-09-17 17:16:55 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: drm/xe: Reject page faults from non-fault-mode scratch VMs Having scratch enabled does not make a VM capable of handling recoverable page faults. Allowing scratch VMs through the ASID lookup also admits dma-fence mode VMs. If such a VM faults on an already valid VMA, the handler reports success without fixing the fault, causing the GPU to retry indefinitely. Only allow fault-mode VMs through the ASID lookup. Fault-mode VMs using scratch remain supported, while faults from 3D VMs are rejected. (cherry picked from commit bfb24a06405b652d37831f3fb66b71d33a6605de)

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected ad9843aac91a1eda12912a4922042ea04cfc29dc 905d648e97ef3a291f71a935a7fab0133f27f0f7 git Not specified
CNA Linux Linux affected ad9843aac91a1eda12912a4922042ea04cfc29dc 5e977521d21717edb8e91d004434697d6e3f248c git Not specified
CNA Linux Linux affected 7.1 Not specified
CNA Linux Linux unaffected 7.1 semver Not specified
CNA Linux Linux unaffected 7.2.6 7.2.* semver Not specified
CNA Linux Linux unaffected 7.3-rc1 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/905d648e97ef3a291f71a935a7fab0133f27f0f7 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/5e977521d21717edb8e91d004434697d6e3f248c 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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