CVE-2026-93176 drm/amd/display: Fix dangling pointer in plane reset function
A dangling pointer in the AMD display driver allows attackers to trigger use-after-free conditions, potentially leading to code execution or system crashes.
- 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-2026-93176?
CVE-2026-93176 is a high-severity use after free vulnerability in Linux, published on 17 Sep 2026. 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 dangling pointer in plane reset function
amdgpu_dm_plane_drm_plane_reset() frees the old state before allocating a new one. If kzalloc() fails, the function returns without updating the state pointer, leaving a dangling pointer to already freed memory.
Fix this by allocating the new state first. On allocation failure, the old state remains untouched and the function safely returns.
Found by Linux Verification Center (linuxtesting.org) with SVACE.
[adjust for movement around current amd-staging-drm-next]
Which versions are affected by CVE-2026-93176?
How do I fix CVE-2026-93176?
Apply the vendor's patch.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2026-93176 being exploited?
There is no known exploitation of CVE-2026-93176 in the wild and no public exploit code.
Sources
Also known as AZL-102836, BELL-CVE-2026-93176, DEBIAN-CVE-2026-93176, GHSA-9vc7-6mj4-86xj, UBUNTU-CVE-2026-93176.