CVE-2024-43903

Published: August 28, 2024Last modified: June 17, 2025

Description

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)

Severity score breakdown

Status

References

• 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
• https://github.com/gregkh/linux/commit/75839e2365b666ff4e1b9047e442cab138eac4f6
• https://github.com/gregkh/linux/commit/bd0e24e5e608ccb9fdda300bb974496d6d8cf57d