CVE-2026-93059 drm/msm: Fix task_struct reference leak in recover_worker
A missing reference count decrement in the Linux kernel MSM GPU driver causes a memory leak during hang recovery, potentially leading to denial of service.
- 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-2026-93059?
CVE-2026-93059 is a memory corruption 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/msm: Fix task_struct reference leak in recover_worker
get_pid_task() increments the task reference count, but the corresponding put_task_struct() was missing in the else branch, leaking a reference on every GPU hang recovery.
Patchwork: https://patchwork.freedesktop.org/patch/730662/
Which versions are affected by CVE-2026-93059?
How do I fix CVE-2026-93059?
Apply the vendor's patch.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-93059 being exploited?
There is no known exploitation of CVE-2026-93059 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2026-93059, DEBIAN-CVE-2026-93059, GHSA-785w-94x7-r876, UBUNTU-CVE-2026-93059.