CVE-2026-64516 drm/amdgpu/vce1: Fix VCE 1 firmware size and offsets
A missing offset calculation in the AMD GPU VCE1 driver allows out-of-bounds memory access, potentially leading to code execution or system 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-2026-64516?
CVE-2026-64516 is a high-severity memory corruption vulnerability in Linux, published on 25 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/vce1: Fix VCE 1 firmware size and offsets
The VCPU BO contains the actual FW at an offset, but it was not calculated into the VCPU BO size. Subtract this from the FW size to make sure there is no out of bounds access.
Make sure the stack and data offsets are aligned to the 32K TLB size.
Check that the FW microcode actually fits in the space that is reserved for it.
(cherry picked from commit c16fe59f622a080fc457a57b3e8f14c780699449)
Which versions are affected by CVE-2026-64516?
How do I fix CVE-2026-64516?
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-2026-64516 being exploited?
There is no known exploitation of CVE-2026-64516 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2026-64516, GHSA-q3hq-vwmg-m826, ROOT-OS-UBUNTU-2204-CVE-2026-64516, UBUNTU-CVE-2026-64516.