CVE-2026-53293

drm/amdgpu: fix AMDGPU_INFO_READ_MMR_REG

State: Published
Severity: Not scored
Published: Jun 26, 2026
Updated: Jun 26, 2026
Reserved: Jun 9, 2026

Description

In 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)

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	8361e3f7882876d98ba98cae0d3149450dd80912 to before 8c4254c8f5836e77ae83e7fc037f02b69f7a0977Affected 9e823f307074c0f82b5f6044943b0086e3079bed to before 61957c2e467b39b528a290016367d32a433fa846Affected 9e823f307074c0f82b5f6044943b0086e3079bed to before a31c3feb54b15a90232e497ad0e27e8a82052d8dAffected 9e823f307074c0f82b5f6044943b0086e3079bed to before 5c29d20470d4566d1b68df57097d642d01f8b427Affected 9e823f307074c0f82b5f6044943b0086e3079bed to before 0ef196a208385b7d7da79f411c161b04e97283e2Affected 17a98c942cb106ec08564e8f43b5470a4dd5d3f6Affected 9a98563345697bdb1d3410ff428473b2e781f4dbAffected 6.6.55 to before 6.6.141Affected 6.10.14 to before 6.11Affected 6.11.3 to before 6.12Affected
LinuxLinux	6.12Affected before 6.12Not affected 6.6.141 through 6.6.Not affected 6.12.91 through 6.12.Not affected 6.18.33 through 6.18.Not affected 7.0.10 through 7.0.Not affected 7.1 and laterNot affected

Product

Versions

LinuxLinux

8361e3f7882876d98ba98cae0d3149450dd80912 to before 8c4254c8f5836e77ae83e7fc037f02b69f7a0977Affected
9e823f307074c0f82b5f6044943b0086e3079bed to before 61957c2e467b39b528a290016367d32a433fa846Affected
9e823f307074c0f82b5f6044943b0086e3079bed to before a31c3feb54b15a90232e497ad0e27e8a82052d8dAffected
9e823f307074c0f82b5f6044943b0086e3079bed to before 5c29d20470d4566d1b68df57097d642d01f8b427Affected
9e823f307074c0f82b5f6044943b0086e3079bed to before 0ef196a208385b7d7da79f411c161b04e97283e2Affected
17a98c942cb106ec08564e8f43b5470a4dd5d3f6Affected
9a98563345697bdb1d3410ff428473b2e781f4dbAffected
6.6.55 to before 6.6.141Affected
6.10.14 to before 6.11Affected
6.11.3 to before 6.12Affected

LinuxLinux

6.12Affected
before 6.12Not affected
6.6.141 through 6.6.*Not affected
6.12.91 through 6.12.*Not affected
6.18.33 through 6.18.*Not affected
7.0.10 through 7.0.*Not affected
7.1 and laterNot affected

References

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