In the Linux kernel, the following vulnerability has been resolved:

drm/amd/display: Add NULL check for 'afb' before dereferencing in amdgpu_dm_plane_handle_cursor_update

This commit adds a null check for the 'afb' variable in the
amdgpu_dm_plane_handle_cursor_update function. Previously, 'afb' was
assumed to be null, but was used later in the code without a null check.
This could potentially lead to a null pointer dereference.

Fixes the below:
drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm_plane.c:1298 amdgpu_dm_plane_handle_cursor_update() error: we previously assumed 'afb' could be null (see line 1252)

References

• https://nvd.nist.gov/vuln/detail/CVE-2024-43903
• https://git.kernel.org/stable/c/31a679a880102dee6e10985a7b1789af8dc328cc
• https://git.kernel.org/stable/c/38e6f715b02b572f74677eb2f29d3b4bc6f1ddff
• https://git.kernel.org/stable/c/94220b35aeba2b68da81deeefbb784d94eeb5c04
• https://git.kernel.org/stable/c/ce5d090af683137cb779ed7e3683839f9c778b35