SB20260625202 - Use-after-free in Linux kernel drm xe driver

Description

This security bulletin contains information about 1 vulnerability.

1) Use-after-free (CVE-ID: CVE-2026-52976)

CWE-ID: CWE-416 - Use After Free

CVSSv4: 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/E:U/U:Clear

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

The vulnerability exists due to a use-after-free in xe_exec_queue_create_ioctl() when handling crafted ioctl requests that trigger error cleanup paths. A local user can trigger queue creation failures to cause a denial of service.

One affected path leaves a freed queue linked in the VM compute exec queue list in preempt fence mode, and another leaves a freed queue linked in the hardware engine group list.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/1be55646d8a2035343b012dcb12210db7bb8b056
• https://git.kernel.org/stable/c/753b149d5a433eb19e0c1b0eb4526a6e26120d1f
• https://git.kernel.org/stable/c/f3cc22d4df3ed58439ea7e21daa54c3608e03b78
• https://git.kernel.org/stable/c/f93b00161213a0fe9f7ff1d8498ee5ca9e0a5c43