CVE-2024-26662 drm/amd/display: Fix 'panel_cntl' could be null in 'dcn21_set_backlight_level()'
A null pointer dereference in the AMD display driver can cause a system crash, requiring a kernel patch to prevent denial of service.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2024-26662?
CVE-2024-26662 is a medium-severity vulnerability in Linux kernel, published on 2 Apr 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: Fix 'panel_cntl' could be null in 'dcn21_set_backlight_level()'
'panel_cntl' structure used to control the display panel could be null, dereferencing it could lead to a null pointer access.
Fixes the below: drivers/gpu/drm/amd/amdgpu/../display/dc/hwss/dcn21/dcn21_hwseq.c:269 dcn21_set_backlight_level() error: we previously assumed 'panel_cntl' could be null (see line 250)
Weakness: CWE-476
Which versions are affected by CVE-2024-26662?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2024-26662?
Apply the vendor's patch.
Is CVE-2024-26662 being exploited?
There is no known exploitation of CVE-2024-26662 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as AZL-59675, BELL-CVE-2024-26662, DEBIAN-CVE-2024-26662, GHSA-989p-25jr-248m, ROOT-OS-DEBIAN-11-CVE-2024-26662, ROOT-OS-DEBIAN-12-CVE-2024-26662 and 2 more.