drm/amdgpu/mes: Fix hung_queue_db_array loop limit for multi-XCC

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Summary

CVECVE-2026-93139
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-17 17:18:08 UTC
Updated2026-09-17 17:18:08 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: drm/amdgpu/mes: Fix hung_queue_db_array loop limit for multi-XCC The loop iterated only AMDGPU_MAX_MES_PIPES times, leaving entries uninitialized for multi-XCC GPUs. This causes null pointer dereferences when accessing arrays indexed by XCC ID >= 2. Extend the loop to cover all XCCs (AMDGPU_MAX_MES_PIPES * num_xcc), matching other per-XCC arrays.

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected a132fc9bc2f8b394a2f75947a0e1f5c22482a94c 7ff668cfc3960ed5b944ac35129f18a15ea08b74 git Not specified
CNA Linux Linux affected a132fc9bc2f8b394a2f75947a0e1f5c22482a94c 2c256086a363f01f9840a57949506eccf5c990a6 git Not specified
CNA Linux Linux affected 7.2 Not specified
CNA Linux Linux unaffected 7.2 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/7ff668cfc3960ed5b944ac35129f18a15ea08b74 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/2c256086a363f01f9840a57949506eccf5c990a6 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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