drm/xe: free madvise VMA array on L2 flush failure

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Summary

CVECVE-2026-72311
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-15 06:22:03 UTC
Updated2026-08-17 06:18:34 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: drm/xe: free madvise VMA array on L2 flush failure xe_vm_madvise_ioctl() allocates madvise_range.vmas in get_vmas(). After get_vmas() succeeds with at least one VMA, error paths must go through free_vmas so the array is released before the madvise details are destroyed. The L2 flush validation path added for PAT madvise rejects some SVM/userptr ranges after get_vmas() has succeeded, but jumps directly to madv_fini. This skips kfree(madvise_range.vmas), leaking the VMA array on each failed ioctl. Jump to free_vmas instead, matching the other validation failure paths after get_vmas() has succeeded. (cherry picked from commit c3a1c3579b1250060da73507a4acef712974c78a)

Risk And Classification

EPSS: 0.001980000 probability, percentile 0.098970000 (date 2026-08-17)

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 4f39a194d41e6b8cb61a91a7bb01b17be59a7d73 bf126747e7bff55e5ba0b1ec10fc5fce99feaed9 git Not specified
CNA Linux Linux affected 4f39a194d41e6b8cb61a91a7bb01b17be59a7d73 14abbed336a2d1bbd726c25d148d2ec0ff928073 git Not specified
CNA Linux Linux affected 7.1 Not specified
CNA Linux Linux unaffected 7.1 semver Not specified
CNA Linux Linux unaffected 7.1.5 7.1.* semver Not specified
CNA Linux Linux unaffected 7.2 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/bf126747e7bff55e5ba0b1ec10fc5fce99feaed9 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/14abbed336a2d1bbd726c25d148d2ec0ff928073 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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