drm/amdgpu: fix AMDGPU_INFO_READ_MMR_REG

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Summary

CVECVE-2026-53293
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-06-26 20:17:22 UTC
Updated2026-06-26 20:17:22 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: fix AMDGPU_INFO_READ_MMR_REG There were multiple issues in that code. First of all the order between the reset semaphore and the mm_lock was wrong (e.g. copy_to_user) was called while holding the lock. Then we allocated memory while holding the reset semaphore which is also a pretty big bug and can deadlock. Then we used down_read_trylock() instead of waiting for the reset to finish. (cherry picked from commit 361b6e6b303d4b691f6c5974d3eaab67ca6dd90e)

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 8361e3f7882876d98ba98cae0d3149450dd80912 8c4254c8f5836e77ae83e7fc037f02b69f7a0977 git Not specified
CNA Linux Linux affected 9e823f307074c0f82b5f6044943b0086e3079bed 61957c2e467b39b528a290016367d32a433fa846 git Not specified
CNA Linux Linux affected 9e823f307074c0f82b5f6044943b0086e3079bed a31c3feb54b15a90232e497ad0e27e8a82052d8d git Not specified
CNA Linux Linux affected 9e823f307074c0f82b5f6044943b0086e3079bed 5c29d20470d4566d1b68df57097d642d01f8b427 git Not specified
CNA Linux Linux affected 9e823f307074c0f82b5f6044943b0086e3079bed 0ef196a208385b7d7da79f411c161b04e97283e2 git Not specified
CNA Linux Linux affected 17a98c942cb106ec08564e8f43b5470a4dd5d3f6 git Not specified
CNA Linux Linux affected 9a98563345697bdb1d3410ff428473b2e781f4db git Not specified
CNA Linux Linux affected 6.6.55 6.6.141 semver Not specified
CNA Linux Linux affected 6.10.14 6.11 semver Not specified
CNA Linux Linux affected 6.11.3 6.12 semver Not specified
CNA Linux Linux affected 6.12 Not specified
CNA Linux Linux unaffected 6.12 semver Not specified
CNA Linux Linux unaffected 6.6.141 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.91 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.33 6.18.* semver Not specified
CNA Linux Linux unaffected 7.0.10 7.0.* semver Not specified
CNA Linux Linux unaffected 7.1 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/5c29d20470d4566d1b68df57097d642d01f8b427 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/a31c3feb54b15a90232e497ad0e27e8a82052d8d 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/0ef196a208385b7d7da79f411c161b04e97283e2 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/8c4254c8f5836e77ae83e7fc037f02b69f7a0977 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/61957c2e467b39b528a290016367d32a433fa846 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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