CVE-2026-74416 drm/radeon: fix memory leak in radeon_ring_restore() on lock failure
A memory leak in the Radeon GPU driver during failed resets can exhaust kernel memory, leading to denial of service for local attackers.
- 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-2026-74416?
CVE-2026-74416 is a memory corruption vulnerability in Linux, published on 15 Aug 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/radeon: fix memory leak in radeon_ring_restore() on lock failure
radeon_ring_restore() takes ownership of the data buffer allocated by radeon_ring_backup(). The caller (radeon_gpu_reset()) only frees it in the non-restore branch; in the restore branch it relies on radeon_ring_restore() to free it.
If radeon_ring_lock() fails, the function returned early without calling kvfree(data), leaking the ring backup buffer on every GPU reset that fails at the lock stage. During repeated GPU resets this causes cumulative kernel memory exhaustion.
Free data before returning the error.
Which versions are affected by CVE-2026-74416?
How do I fix CVE-2026-74416?
Apply the vendor's patch.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-74416 being exploited?
There is no known exploitation of CVE-2026-74416 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2026-74416, DEBIAN-CVE-2026-74416, GHSA-ccv2-c43x-5r5p, UBUNTU-CVE-2026-74416.