CVE-2025-38085

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

Description: A race condition exists between huge pmd unshare() and GUP-fast in the Linux kernel. The huge pmd unshare() function drops a reference on a page table that may have been shared across processes, potentially turning it into a normal page table used in another process. This could lead to GUP-fast walking the page tables of another process, resulting in unexpected behavior. Although no immediate kernel memory corruption is apparent, the issue is unusual and has been fixed with an explicit broadcast IPI through tlb remove table sync one().

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