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.

CVSS v3 5.5 MEDIUM

5.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/4fe4ae6c2e01d028856b73b6328b12b8945df871	Patch
https://git.kernel.org/stable/c/8f8df955f078e1a023ee55161935000a67651f38	Patch
https://git.kernel.org/stable/c/f41a60bc43e7abbc636fee78bed0d74c31e738b0	Patch

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel:6.14:rc1::::::
	cpe:2.3:o:linux:linux_kernel:6.14:rc2::::::
	cpe:2.3:o:linux:linux_kernel:6.14:rc3::::::
	cpe:2.3:o:linux:linux_kernel:6.14:rc4::::::

History

No history.

Information

Published : 2025-04-01 16:15

Updated : 2025-10-01 18:15

NVD link : CVE-2025-21900

Mitre link : CVE-2025-21900

CVE.ORG link : CVE-2025-21900

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-667

Improper Locking

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