CVE-2026-93248 drm/xe: don't WARN on kernel job timeout when device already wedged
A local attacker can trigger a kernel warning and potential instability by causing a GPU job timeout on an already wedged Intel Xe device.
- 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-2026-93248?
CVE-2026-93248 is a denial of service vulnerability in Linux, published on 24 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: don't WARN on kernel job timeout when device already wedged
igt@xe_wedged@wedged-at-any-timeout wedges the device in mode 2 (UPON_ANY_HANG_NO_RESET) and then rebinds the driver. During unbind, a GSC proxy kernel submission can still time out; with the device wedged and the GuC CT stopped it can never complete, so its kernel job times out.
Tile0: GT1: Kernel-submitted job timed out WARNING: drivers/gpu/drm/xe/xe_guc_submit.c:... at guc_exec_queue_timedout_job() Workqueue: gt-ordered-wq drm_sched_job_timedout
Killed queues skip guc_submit_hint_wedged(), leaving 'wedged' false even though the device is already wedged. The timeout handler then treats the kernel queue timeout as unexpected and taints the kernel.
Honour an already-wedged device even for killed queues so the expected teardown timeout no longer trips the WARN.
(cherry picked from commit a1c1dbd0f047bb05de6aaf6abe9103031179bf19)
Which versions are affected by CVE-2026-93248?
How do I fix CVE-2026-93248?
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-2026-93248 being exploited?
There is no known exploitation of CVE-2026-93248 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2026-93248, DEBIAN-CVE-2026-93248, GHSA-h35v-9854-jq4c, UBUNTU-CVE-2026-93248.