CVE-2026-80915 drm/xe: Fix DPT allocation paths.
A flaw in the Linux kernel's Xe GPU driver causes system hangs or black screens due to improper memory allocation, requiring a kernel patch.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-80915?
CVE-2026-80915 is a denial of service vulnerability in Linux, published on 9 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: Fix DPT allocation paths.
Remove the fallback for VRAM to system memory, I tested it and that doesn't work at all, only a black screen with pipe fault errors were observed.
On systems with media GT, extra latency is added when accessing stolen memory when the GT is in MC6. Since we additionally aren't counting how much memory is used for stolen and we could in theory fill up the entire stolen area with DPT's, avoid using stolen and only use the default memory region.
Using stolen may also result in random system hangs under load.
(cherry picked from commit a196406a3831291598fe8e73245914f7acffdfe0)
Which versions are affected by CVE-2026-80915?
How do I fix CVE-2026-80915?
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-2026-80915 being exploited?
There is no known exploitation of CVE-2026-80915 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2026-80915, DEBIAN-CVE-2026-80915, GHSA-whqc-hpw3-72pp, UBUNTU-CVE-2026-80915.