SB20260812231 - Missing Release of Resource after Effective Lifetime in Linux kernel drm xe driver

Description

This security bulletin contains information about 1 vulnerability.

1) Missing Release of Resource after Effective Lifetime (CVE-ID: CVE-2026-68298)

CWE-ID: CWE-772 - Missing Release of Resource after Effective Lifetime

CVSSv4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/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 in xe_vm_create() in the drm/xe virtual memory management code when handling creation failures after SVM initialization. A local user can trigger drm_gpuvm_resv_object_alloc() allocation failure to cause a denial of service.

For fault-mode VMs, the issue can also leave pagemap owner and pagemap resources unreleased on the error path.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/279339aa8bdcf9db40094cf2bcbd495c53dbe817
• https://git.kernel.org/stable/c/9ac92736030f3395d970c300eaeb59ac258a0c3e
• https://git.kernel.org/stable/c/d2c6800ad1802bed72a6de1416536737f114f1d6