RefluXFS: Linux Kernel Local Privilege Escalation in XFS

Researchers have identified a vulnerability named RefluXFS. It is a local privilege escalation flaw in the Linux kernel. The vulnerability specifically affects the XFS file system. It allows an attacker to gain root access on the system. The issue is tracked under CVE-2026-64600. This discovery was detailed in a Qualys research blog. It highlights security risks within kernel-level file systems. Users should review their Linux kernel versions for patches.