UBUNTU-CVE-2026-22989

In the Linux kernel, the following vulnerability has been resolved: nfsd: check that server is running in unlockfilesystem If we are trying to unlock the filesystem via an administrative interface and nfsd isn't running, it crashes the server. This happens currently because nfsd4revokestates acce...

CVE-2026-22989 nfsd: check that server is running in unlock_filesystem

In the Linux kernel, the following vulnerability has been resolved: nfsd: check that server is running in unlockfilesystem If we are trying to unlock the filesystem via an administrative interface and nfsd isn't running, it crashes the server. This happens currently because nfsd4revokestates acce...

CVE-2026-22989

CVE-2026-22989 affects the Linux kernel NFS server (nfsd). The issue occurs when unlocking the filesystem via an administrative interface while nfsd is not running, causing nfsd4_revoke_states() to access freed state structures (eg conf_id_hashtbl) during server shutdown and potentially crash. Th...