5.5

CVE-2026-53293

drm/amdgpu: fix AMDGPU_INFO_READ_MMR_REG

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)
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 6.6.55 < 6.6.141
Linux ≫ Linux Kernel Version >= 6.10.14 < 6.11
Linux ≫ Linux Kernel Version >= 6.11.3 < 6.12.91
Linux ≫ Linux Kernel Version >= 6.13 < 6.18.33
Linux ≫ Linux Kernel Version >= 6.19 < 7.0.10
Linux ≫ Linux Kernel Version7.1 Updaterc1
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.1% 0.008
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 5.5 1.8 3.6
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-667 Improper Locking

The product does not properly acquire or release a lock on a resource, leading to unexpected resource state changes and behaviors.

https://git.kernel.org/stable/c/8c4254c8f5836e77ae83e7fc037f02b69f7a0977
Patch
https://git.kernel.org/stable/c/61957c2e467b39b528a290016367d32a433fa846
Patch
https://git.kernel.org/stable/c/a31c3feb54b15a90232e497ad0e27e8a82052d8d
Patch
https://git.kernel.org/stable/c/5c29d20470d4566d1b68df57097d642d01f8b427
Patch
https://git.kernel.org/stable/c/0ef196a208385b7d7da79f411c161b04e97283e2
Patch