drm/xe/pt: Fix NULL pointer dereference in xe_pt_zap_ptes_entry()

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-72362
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-15 06:22:09 UTC
Updated2026-08-17 06:18:40 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: drm/xe/pt: Fix NULL pointer dereference in xe_pt_zap_ptes_entry() The page-table walk framework may pass a NULL *child pointer for unpopulated entries. xe_pt_zap_ptes_entry() called container_of(*child) before checking for NULL, then dereferenced the result, causing a crash. Move the container_of() call after a NULL guard, so the function returns early instead of proceeding with an invalid pointer. XE_WARN_ON is kept to help root cause the issue, but we now bail instead of crashing the driver. v2: Comment that triggering XE_WARN_ON is unexpected behavior (Matt Brost) (cherry picked from commit b9297d19d9df5d4b6c994648570c5dcd1cac68ff)

Risk And Classification

EPSS: 0.002000000 probability, percentile 0.101540000 (date 2026-08-17)

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected dd08ebf6c3525a7ea2186e636df064ea47281987 ff330ce16c846b70164ff0eb544c81219d4c5c08 git Not specified
CNA Linux Linux affected dd08ebf6c3525a7ea2186e636df064ea47281987 78b1074966d290d4517f42bc81e13c4349368d12 git Not specified
CNA Linux Linux affected dd08ebf6c3525a7ea2186e636df064ea47281987 d94b9922b2ae5ee6e900f8da0bd537b251c6110c git Not specified
CNA Linux Linux affected dd08ebf6c3525a7ea2186e636df064ea47281987 3feeb667197bd58a17f4edfdbcad249ffcb3c864 git Not specified
CNA Linux Linux affected 6.8 Not specified
CNA Linux Linux unaffected 6.8 semver Not specified
CNA Linux Linux unaffected 6.12.97 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.40 6.18.* 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/d94b9922b2ae5ee6e900f8da0bd537b251c6110c 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/78b1074966d290d4517f42bc81e13c4349368d12 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/ff330ce16c846b70164ff0eb544c81219d4c5c08 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/3feeb667197bd58a17f4edfdbcad249ffcb3c864 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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