SB20260720204 - Improper resource shutdown or release in Linux kernel drm xe driver

Description

This security bulletin contains information about 1 vulnerability.

1) Improper resource shutdown or release (CVE-ID: CVE-2026-64021)

CWE-ID: CWE-404 - Improper Resource Shutdown or Release

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to improper resource shutdown or release in xe_oa_stream_open_ioctl() when handling an ioctl request with an exec queue whose width is greater than 1. A local user can send a crafted ioctl request to cause a denial of service.

The leaked exec queue reference can keep both the exec queue and the file private state pinned indefinitely.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/04ef7592eaadd9ca8f8f66e76452f73525cff819
• https://git.kernel.org/stable/c/4b0c4f0c1b133d4bfa31c167200bcda646873328
• https://git.kernel.org/stable/c/4d25342543c01310fc4e0cba7cb17c775e2421e2