CVE-2026-93248
Received Received - Intake

Kernel Job Timeout Handling in Linux Kernel

Publication date: 2026-09-24

Last updated on: 2026-09-24

Assigner: kernel.org

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)

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Meta Information

Published
2026-09-24
Last Modified
2026-09-24
Generated
2026-09-25
AI Q&A
2026-09-24
EPSS Evaluated
N/A
NVD
CVE-2026-93248
EUVD
EUVD-2026-86259

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
linux linux_kernel *

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Exploitability

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CWE ID Description
CWE-UNKNOWN

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Executive Summary

This vulnerability involves a kernel job timeout warning in the Linux kernel's DRM/XE driver. When a device is already in a wedged state and the driver is rebound, a kernel submission may time out because the device cannot complete the job. The system incorrectly treats this as an unexpected timeout, triggering a warning and potentially tainting the kernel.

Detection Guidance

This vulnerability is specific to the Linux kernel's DRM/XE driver and relates to GPU job timeouts. Detection requires checking kernel logs for GPU-related warnings or errors, particularly around xe_guc_submit.c and drm_sched_job_timedout. Look for messages like 'Kernel-submitted job timed out' or 'WARNING' in dmesg or journalctl logs.

Impact Analysis

This vulnerability may cause unnecessary kernel warnings or taints when a GPU device is already unresponsive. It could lead to system instability or confusion during debugging, as the kernel incorrectly flags a timeout that is expected due to the wedged state.

Compliance Impact

This vulnerability does not directly affect compliance with standards like GDPR or HIPAA as it is specific to the Linux kernel's graphics driver subsystem and does not involve data exposure or privacy violations.

Mitigation Strategies

Apply the kernel patch that resolves this issue by updating to a patched Linux kernel version. Monitor GPU driver logs for wedged device states and ensure proper driver unbind/rebind handling. If the device is wedged, perform a full system reboot to reset the GPU state.

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