Review reviewHigh

CVE-2025-40166

Linux

In the Linux kernel, the following vulnerability has been resolved: drm/xe/guc: Check GuC running state before deregistering exec queue In normal operation, a registered exec queue is disabled and deregistered through the GuC, and freed only after the GuC confirms completion. However, if the driver is forced to unbind while the exec queue is still running, the user may call exec_destroy() after the GuC has already been stopped and CT communication disabled. In this case, the driver cannot receive a response from the GuC, preventing proper cleanup of exec queue resources. Fix this by directl...

CVSS: 7.8
EPSS: 0.14%
CISA KEV: Not listed
Published: 2025.11.12

PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV

Exploit probability0.14%

Technical severityCVSS 7.8

Vulnerability overview

Affected product and versions

Product: Linux
Affected versions: >= dd08ebf6c3525a7ea2186e636df064ea47281987 < 2c6e5904c5bdbac8e0eadee40f70c42bb83f6dc6, >= dd08ebf6c3525a7ea2186e636df064ea47281987 < fa708415566bbe5361c935645107319f8edc8dc1, >= dd08ebf6c3525a7ea2186e636df064ea47281987 < 9f64b3cd051b825de0a2a9f145c8e003200cedd5, >= 6.8
Fixed versions: No verified fixed-version field is available yet

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide

1
Identify
Confirm that Linux and an affected version are present.
2
Prioritize
Combine exploitation signals with asset exposure and business criticality.
3
Remediate
Follow the vendor advisory or supported update path and preserve rollback options.
4
Verify
Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE: Not available