CVE-2024-49905 drm/amd/display: Add null check for 'afb' in amdgpu_dm_plane_handle_cursor_update (v2)

What is CVE-2024-49905?

CVE-2024-49905 is a medium-severity vulnerability in Linux kernel, published on 21 Oct 2024. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

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

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

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.

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_plane.c:1298 amdgpu_dm_plane_handle_cursor_update() error: we previously assumed 'afb' could be null (see line 1252)

Weakness: CWE-476

Which versions are affected by CVE-2024-49905?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2024-49905?

Apply the vendor's patch.

Is CVE-2024-49905 being exploited?

There is no known exploitation of CVE-2024-49905 in the wild and no public exploit code.

Other vulnerabilities in Linux kernel

• CVE-2026-53266 Linux Kernel Out-of-Bounds Write Exploited High 8.8
• CVE-2013-6282 Linux Kernel Improper Input Validation Exploited High 8.8
• CVE-2022-0185 Linux Kernel Heap-Based Buffer Overflow Exploited High 8.4
• CVE-2013-2094 Linux Kernel Privilege Escalation Exploited High 8.4
• CVE-2026-53362 Linux Kernel Unspecified Exploited High 7.8

All Linux kernel vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as AZL-51053, AZL-51079, BELL-CVE-2024-49905, DEBIAN-CVE-2024-49905, GHSA-88g6-52pm-gr2w, ROOT-OS-DEBIAN-11-CVE-2024-49905 and 2 more.