CVE-2026-80703 drm/amdkfd: Fix missing authorization check in KFD_IOC_DBG_TRAP_DISABLE
Local attackers with /dev/kfd access can terminate other users' GPU debug sessions due to missing authorization checks in the Linux kernel.
- 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-2026-80703?
CVE-2026-80703 is a missing authorization vulnerability in Linux, published on 28 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/amdkfd: Fix missing authorization check in KFD_IOC_DBG_TRAP_DISABLE
Prevent unauthorized termination of active GPU debug sessions. Previously, users with /dev/kfd access could terminate another process's debug session without proper ownership or ptrace authorization.
(cherry picked from commit 4db4c5ffd5585b72622ecf6ffedf2da258ee23f5)
Which versions are affected by CVE-2026-80703?
How do I fix CVE-2026-80703?
Apply the vendor's patch.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-80703 being exploited?
There is no known exploitation of CVE-2026-80703 in the wild and no public exploit code.
Sources
Also known as AZL-98168, BELL-CVE-2026-80703, DEBIAN-CVE-2026-80703, GHSA-wqm8-5qv4-rxp2, UBUNTU-CVE-2026-80703.