CVE-2025-38393

CVE-2025-38393 is a Linux kernel race condition in NFSv4/pNFS wake logic for NFS_LAYOUT_DRAIN in pnfs_update_layout(). The issue occurs when a waiter and waker race, causing writeback/page lock hang; a barrier-based fix is applied. Public advisories/DB entries confirm the fix across multiple kern...

CVE-2026-53393

CVE-2026-53393 (Linux kernel, NFS daemon) is resolved in the Linux kernel. The issue was that nfsd_vfs_write() and nfsd_commit() did not rotate the server’s write verifier (nn->writeverf) when deferred writeback errors occurred, unlike other durable-storage-failure paths which call commit_rese...