CVE-2026-68106 drm/amdgpu: fix division by zero with invalid uvd dimensions
A division by zero in the AMD GPU driver allows attackers to cause a system crash by providing invalid video dimensions.
- 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-2026-68106?
CVE-2026-68106 is a high-severity denial of service vulnerability in Linux, published on 10 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/amdgpu: fix division by zero with invalid uvd dimensions
When width or height is less than 16, width_in_mb or height_in_mb becomes 0, leading to fs_in_mb being 0. This causes a division by zero when calculating num_dpb_buffer in H264 and H264 Perf decode paths.
Add validation to reject frames with width < 16 or height < 16 before performing any calculations that depend on these values.
V2: Format change - move up all vaiable definitions. V3: Use warn_once to avoid spam.
(cherry picked from commit 3e41d26c70b0a459d041cc19482a226c4b7423cb)
Weakness: CWE-369
Which versions are affected by CVE-2026-68106?
How do I fix CVE-2026-68106?
Apply the vendor's patch.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-68106 being exploited?
There is no known exploitation of CVE-2026-68106 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2026-68106, DEBIAN-CVE-2026-68106, GHSA-jxfv-759v-w83r, UBUNTU-CVE-2026-68106.