SB20260925133 - Improper Check for Unusual or Exceptional Conditions in Linux kernel drm xe driver

Description

This security bulletin contains information about 1 vulnerability.

1) Improper Check for Unusual or Exceptional Conditions (CVE-ID: CVE-2026-93248)

CWE-ID: CWE-754 - Improper Check for Unusual or Exceptional Conditions

CVSSv4: 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]

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.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/13087ad7817e6e5f210064518bfc4d6d58a9c2f3
• https://git.kernel.org/stable/c/24d81b72992006f9c390f1fc85c7f991e6d06fd6