CVE-2026-64600 (RefluXFS) vulnerability in Red Hat Enterprise Linux 8 and later

Solution Verified - Updated -

Issue

  • Is Red Hat Enterprise Linux vulnerable to RefluXFS (CVE-2026-64600)?
  • Which RHEL releases and kernel versions are affected by RefluXFS?
  • How do I check if my XFS filesystem configuration is vulnerable to local privilege escalation?
  • What is the recommended patching procedure for RefluXFS?

Environment

  • Red Hat Enterprise Linux 10
  • Red Hat Enterprise Linux 9
  • Red Hat Enterprise Linux 8
  • XFS Filesystem with reflink enabled

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