CyberRota Analysis
This is a high severity vulnerability with a CVSS score of 7.5. It affects Linux.
CVE
CVE-2025-21900
Severity
HIGH
CVSS
7.5
EPSS
0.32%
Linux
Original NVD Description
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.
Related CVEs
Other vulnerabilities affecting the same vendor(s)