CVE-2026-72311

Technical Description

In the Linux kernel, the following vulnerability has been resolved:

drm/xe: free madvise VMA array on L2 flush failure

xe_vm_madvise_ioctl() allocates madvise_range.vmas in get_vmas().

After get_vmas() succeeds with at least one VMA, error paths must go

through free_vmas so the array is released before the madvise details are

destroyed.

The L2 flush validation path added for PAT madvise rejects some

SVM/userptr ranges after get_vmas() has succeeded, but jumps directly to

madv_fini. This skips kfree(madvise_range.vmas), leaking the VMA array on

each failed ioctl.

Jump to free_vmas instead, matching the other validation failure paths

after get_vmas() has succeeded.

(cherry picked from commit c3a1c3579b1250060da73507a4acef712974c78a)

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References