CVE-2024-49908 drm/amd/display: Add null check for 'afb' in amdgpu_dm_update_cursor (v2)

What is CVE-2024-49908?

CVE-2024-49908 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_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)

Weakness: CWE-476

Which versions are affected by CVE-2024-49908?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2024-49908?

Apply the vendor's patch.

Is CVE-2024-49908 being exploited?

There is no known exploitation of CVE-2024-49908 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-51067, AZL-51095, BELL-CVE-2024-49908, DEBIAN-CVE-2024-49908, GHSA-6g7j-p2cm-w265, ROOT-OS-DEBIAN-11-CVE-2024-49908 and 4 more.