CVE - CVE-2025-21900

CVE-ID
CVE-2025-21900	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
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.
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://git.kernel.org/stable/c/4fe4ae6c2e01d028856b73b6328b12b8945df871 URL:https://git.kernel.org/stable/c/4fe4ae6c2e01d028856b73b6328b12b8945df871 MISC:https://git.kernel.org/stable/c/8f8df955f078e1a023ee55161935000a67651f38 URL:https://git.kernel.org/stable/c/8f8df955f078e1a023ee55161935000a67651f38 MISC:https://git.kernel.org/stable/c/f41a60bc43e7abbc636fee78bed0d74c31e738b0 URL:https://git.kernel.org/stable/c/f41a60bc43e7abbc636fee78bed0d74c31e738b0
Assigning CNA
kernel.org
Date Record Created
20241229	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20241229)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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