CVE-2025-21900

In the Linux kernel, the following vulnerability has been resolved: NFSv4: Fix a deadlock when recovering state on a sillyrenamed file If the file is sillyrenamed, and slated for delete on close, it is possible for a server reboot to triggeer an open reclaim, with can again race with the application call to close(). When that happens, the call to put_nfs_open_context() can trigger a synchronous delegreturn call which deadlocks because it is not marked as privileged. Instead, ensure that the call to nfs4_inode_return_delegation_on_close() catches the delegreturn, and schedules it asynchronously.

The following products are affected by CVE-2025-21900 vulnerability.

Here, you will find a curated list of external links that provide in-depth information to CVE-2025-21900.

URL	Resource
https://git.kernel.org/stable/c/4fe4ae6c2e01d028856b73b6328b12b8945df871
https://git.kernel.org/stable/c/8f8df955f078e1a023ee55161935000a67651f38
https://git.kernel.org/stable/c/f41a60bc43e7abbc636fee78bed0d74c31e738b0
https://lore.kernel.org/linux-cve-announce/2025040133-CVE-2025-21900-8d31@gregkh/T
https://nvd.nist.gov/vuln/detail/CVE-2025-21900
https://www.cve.org/CVERecord?id=CVE-2025-21900