CVE-2026-93058 drm/msm: Only fini scheduler after successful init
A local attacker can cause a kernel crash by triggering a failure in the MSM DRM driver initialization, leading to a 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-2026-93058?
CVE-2026-93058 is a 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: Only fini scheduler after successful init
msm_ringbuffer_new() destroys a partially initialized ring through msm_ringbuffer_destroy() when an allocation or scheduler setup step fails.
If drm_sched_init() fails before it finishes initializing the scheduler, the failure path still calls drm_sched_fini(). That teardown path assumes the scheduler work items, lists, and workqueue state were initialized.
Track successful scheduler initialization and call drm_sched_fini() only after drm_sched_init() returned 0.
This issue was found by a static analysis checker and confirmed by manual source review.
Patchwork: https://patchwork.freedesktop.org/patch/738905/
Which versions are affected by CVE-2026-93058?
How do I fix CVE-2026-93058?
Apply the vendor's patch.
Is CVE-2026-93058 being exploited?
There is no known exploitation of CVE-2026-93058 in the wild and no public exploit code.
Sources
Also known as AZL-102188, BELL-CVE-2026-93058, DEBIAN-CVE-2026-93058, GHSA-2m9v-9vx7-p7w7, UBUNTU-CVE-2026-93058.