CVE-2025-21939

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description A vulnerability in the Linux kernel has been resolved, related to the drm/xe/hmm component. The issue involves dereferencing struct page pointers without holding the notifier lock, which can lead to problems as the pages may not be valid. The fix involves manually building the sg-table to avoid marking pages as dirty and accessed when they are not owned, and to prevent dereferencing struct pages that are not owned. The estimated number of potentially affected devices worldwide is not available.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.