CVE-2026-68258 drm/amdkfd: Check bounds on CRIU restore queue type and mqd size
Missing bounds checks in the Linux kernel's AMD KFD CRIU restore allow attackers to cause denial of service or potentially execute code via malformed queue data.
- 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-2026-68258?
CVE-2026-68258 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/amdkfd: Check bounds on CRIU restore queue type and mqd size
We weren't checking whether the values provided in the private data in kfd CRIU restore were within bounds.
For queue type, add a KFD_QUEUE_TYPE_MAX and ensure the provided type is less than it.
For mqd_size, add new function mqd_size_from_queue_type and confirm that the provided mqd_size matches expectations.
(cherry picked from commit f19d8086f6644083c913d70bfdeee20e1b6f46a5)
Weakness: CWE-20
Which versions are affected by CVE-2026-68258?
How do I fix CVE-2026-68258?
Apply the vendor's patch.
Is CVE-2026-68258 being exploited?
There is no known exploitation of CVE-2026-68258 in the wild and no public exploit code.
Sources
Also known as AZL-94865, BELL-CVE-2026-68258, DEBIAN-CVE-2026-68258, GHSA-vj59-w4c8-vwfg, UBUNTU-CVE-2026-68258.