CVE-2026-80883 drm/tegra: gr2d/gr3d: Initialize address register map before HOST1X client is registered
A race condition in the Linux kernel Tegra DRM driver allows local users to trigger a denial of service by submitting jobs before register initialization.
- 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-2026-80883?
CVE-2026-80883 is a vulnerability in Linux, published on 4 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/tegra: gr2d/gr3d: Initialize address register map before HOST1X client is registered
The host1x_client_register() function is called just prior to register map initialization loop, making the device available to userspace. This may result in userspace attempting to submits a job before the register map is initialized. Address this by moving register initialization before host1x client registration.
Which versions are affected by CVE-2026-80883?
How do I fix CVE-2026-80883?
Apply the vendor's patch.
Is CVE-2026-80883 being exploited?
There is no known exploitation of CVE-2026-80883 in the wild and no public exploit code.
Sources
Also known as AZL-99437, BELL-CVE-2026-80883, DEBIAN-CVE-2026-80883, GHSA-924c-v8fr-v5mq, UBUNTU-CVE-2026-80883.