CVE-2026-68108 drm/amdgpu/vce: fix integer overflow in image size
A malicious VCE command stream can trigger an integer overflow in the AMD GPU driver, leading to out-of-bounds memory access and potential code execution.
- 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-2026-68108?
CVE-2026-68108 is a high-severity 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/vce: fix integer overflow in image size
Fix a security vulnerability where malicious VCE command streams with oversized dimensions (e.g. 65536×65536) cause 32-bit integer overflow, wrapping the calculated buffer size to 0. This bypasses validation and allows GPU firmware to perform out-of-bound memory access.
The fix uses 64-bit arithmetic to detect overflow and rejects invalid dimensions before they reach the hardware.
V2: remove redundant check V3: modify max height value V4: remove size64
(cherry picked from commit cbe408dba581755ad1279a487ec786d8927d778d)
Weakness: CWE-190
Which versions are affected by CVE-2026-68108?
How do I fix CVE-2026-68108?
Apply the vendor's patch.
Is CVE-2026-68108 being exploited?
There is no known exploitation of CVE-2026-68108 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2026-68108, DEBIAN-CVE-2026-68108, GHSA-34qj-qvm5-mprq, UBUNTU-CVE-2026-68108.