CVE-2026-63845 drm/amdgpu/jpeg: set no_user_fence for JPEG v4.0 ring
The Linux kernel AMDGPU driver fails to reject invalid user fence submissions for JPEG v4.0 rings, 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-2026-63845?
CVE-2026-63845 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 v4.0 ring
JPEG rings do not support 64-bit user fence writes, reject CS submissions with user fences.
(cherry picked from commit 8d0cac9478a3f046279c657d6a2545de49ae675a)
Weakness: CWE-20
Which versions are affected by CVE-2026-63845?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2026-63845?
Apply the vendor's patch.
Is CVE-2026-63845 being exploited?
There is no known exploitation of CVE-2026-63845 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as BELL-CVE-2026-63845, DEBIAN-CVE-2026-63845, GHSA-pvx7-4g2w-qq4j, ROOT-OS-DEBIAN-12-CVE-2026-63845, UBUNTU-CVE-2026-63845.