CVE-2026-90064 drm/xe: Reject page faults from non-fault-mode scratch VMs
A local attacker can cause an indefinite GPU retry loop and denial of service by triggering page faults on non-fault-mode scratch VMs 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-2026-90064?
CVE-2026-90064 is a denial of service vulnerability in Linux, published on 17 Sep 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/xe: Reject page faults from non-fault-mode scratch VMs
Having scratch enabled does not make a VM capable of handling recoverable page faults. Allowing scratch VMs through the ASID lookup also admits dma-fence mode VMs.
If such a VM faults on an already valid VMA, the handler reports success without fixing the fault, causing the GPU to retry indefinitely.
Only allow fault-mode VMs through the ASID lookup. Fault-mode VMs using scratch remain supported, while faults from 3D VMs are rejected.
(cherry picked from commit bfb24a06405b652d37831f3fb66b71d33a6605de)
Which versions are affected by CVE-2026-90064?
How do I fix CVE-2026-90064?
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-2026-90064 being exploited?
There is no known exploitation of CVE-2026-90064 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2026-90064, GHSA-3jfv-m5vm-v4f6, UBUNTU-CVE-2026-90064.