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THREATINT
PUBLISHED

CVE-2024-49908

drm/amd/display: Add null check for 'afb' in amdgpu_dm_update_cursor (v2)



AssignerLinux
Reserved2024-10-21
Published2024-10-21
Updated2024-11-05

Description

In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Add null check for 'afb' in amdgpu_dm_update_cursor (v2) This commit adds a null check for the 'afb' variable in the amdgpu_dm_update_cursor function. Previously, 'afb' was assumed to be null at line 8388, but was used later in the code without a null check. This could potentially lead to a null pointer dereference. Changes since v1: - Moved the null check for 'afb' to the line where 'afb' is used. (Alex) Fixes the below: drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm.c:8433 amdgpu_dm_update_cursor() error: we previously assumed 'afb' could be null (see line 8388)

Product status

Default status
unaffected

1da177e4c3f4 before a742168b6a39
affected

1da177e4c3f4 before 0fe20258b498
affected

Default status
affected

6.11.3
unaffected

6.12-rc1
unaffected

References

https://git.kernel.org/stable/c/a742168b6a39ead257da53bcbe472384d6e14a1b

https://git.kernel.org/stable/c/0fe20258b4989b9112b5e9470df33a0939403fd4

cve.org CVE-2024-49908

nvd.nist.gov CVE-2024-49908

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