CVE-2026-64519

A flaw was found in the Linux kernel's Network File System Daemon (NFSD). This vulnerability allows a remote attacker to cause a Denial of Service (DoS) by triggering an infinite loop during layout state revocation. The issue occurs because the system repeatedly attempts to revoke a layout state without properly updating its status, leading to the revoker hanging indefinitely.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

If the NFS server functionality is not required, disable the nfs-server service to prevent exploitation.

systemctl stop nfs-server
systemctl disable nfs-server

This action will stop all NFS server operations and prevent them from starting automatically. If the NFS server is in use, consider restricting network access to trusted clients via firewall rules.