CVE-2024-49908

Summary

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)

Affected Software

VendorProductVersion RangeStatus
LinuxLinux4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c < a742168b6a39ead257da53bcbe472384d6e14a1baffected
LinuxLinux4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c < 0fe20258b4989b9112b5e9470df33a0939403fd4affected
LinuxLinux4.15affected
LinuxLinux0 < 4.15unaffected
LinuxLinux6.11.3 <= 6.11.*unaffected
LinuxLinux6.12 <= *unaffected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

References