CVE-2026-53377 drm/msm: always recover the gpu
A flaw in the Linux kernel's MSM GPU driver allows a hung GPU state to persist, causing denial of service by preventing recovery.
- 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-2026-53377?
CVE-2026-53377 is a medium-severity denial of service vulnerability in Linux kernel, published on 19 Jul 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/msm: always recover the gpu
Previously, in case there was no more work to do, recover worker wouldn't trigger recovery and would instead rely on the gpu going to sleep and then resuming when more work is submitted.
Recover_worker will first increment the fence of the hung ring so, if there's only one job submitted to a ring and that causes an hang, it will early out.
There's no guarantee that the gpu will suspend and resume before more work is submitted and if the gpu is in a hung state it will stay in that state and probably trigger a timeout again.
Just stop checking and always recover the gpu.
Patchwork: https://patchwork.freedesktop.org/patch/704066/
Which versions are affected by CVE-2026-53377?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2026-53377?
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-2026-53377 being exploited?
There is no known exploitation of CVE-2026-53377 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as AZL-92558, BELL-CVE-2026-53377, DEBIAN-CVE-2026-53377, GHSA-9q28-3qg6-wq2f, ROOT-OS-DEBIAN-12-CVE-2026-53377, ROOT-OS-DEBIAN-13-CVE-2026-53377 and 2 more.