CVE-2026-63841 drm/amdgpu/jpeg: set no_user_fence for JPEG v5.0.1 ring
A missing check in the AMD GPU JPEG driver allows invalid user fence submissions, potentially causing system instability or 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-2026-63841?
CVE-2026-63841 is a high-severity vulnerability in Linux kernel, published on 19 Jul 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/amdgpu/jpeg: set no_user_fence for JPEG v5.0.1 ring
JPEG rings do not support 64-bit user fence writes, reject CS submissions with user fences.
(cherry picked from commit 742a98e2e81702df8fe1b1eccee5223220a03dc2)
Which versions are affected by CVE-2026-63841?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2026-63841?
Apply the vendor's patch.
Is CVE-2026-63841 being exploited?
There is no known exploitation of CVE-2026-63841 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as BELL-CVE-2026-63841, DEBIAN-CVE-2026-63841, GHSA-8cvv-rxg7-8gc2, UBUNTU-CVE-2026-63841.