Improper Check for Unusual or Exceptional Conditions in Linux kernel - CVE-2026-93248
Published: September 25, 2026
Vulnerability identifier: #VU152157
CSH Severity: Low
CVSS v4: 2 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-93248
CWE-ID: CWE-754
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to cause the kernel to issue a warning and become tainted.
The vulnerability exists due to improper handling of an already-wedged device state in the GuC submission timeout handler when handling kernel job timeouts on killed queues during driver unbinding. A local user can trigger a kernel submission timeout on an already-wedged device to cause the kernel to issue a warning and become tainted.
The condition occurs when a GSC proxy kernel submission remains outstanding after the GuC CT has stopped.
Affected software
Linux kernel
How to mitigate CVE-2026-93248
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3