CVE-2025-21900

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. 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.

5.5 /10

CVSS v3 : MEDIUM

V3 Legend

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

15 Apr 2025, 16:42

Type Values Removed Values Added
First Time Linux linux Kernel
Linux
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.5
CPE cpe:2.3:o:linux:linux_kernel:6.14:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.14:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.14:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.14:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
References () https://git.kernel.org/stable/c/4fe4ae6c2e01d028856b73b6328b12b8945df871 - () https://git.kernel.org/stable/c/4fe4ae6c2e01d028856b73b6328b12b8945df871 - Patch
References () https://git.kernel.org/stable/c/8f8df955f078e1a023ee55161935000a67651f38 - () https://git.kernel.org/stable/c/8f8df955f078e1a023ee55161935000a67651f38 - Patch
References () https://git.kernel.org/stable/c/f41a60bc43e7abbc636fee78bed0d74c31e738b0 - () https://git.kernel.org/stable/c/f41a60bc43e7abbc636fee78bed0d74c31e738b0 - Patch
Summary
  • (es) En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: NFSv4: Se corrige un bloqueo al recuperar el estado de un archivo con un nombre sillyrenombrado. Si el archivo tiene un nombre sillyrenombrado y se programa para eliminarse al cerrarse, es posible que un reinicio del servidor active una recuperación abierta, que puede competir con la llamada de la aplicación a close(). En este caso, la llamada a put_nfs_open_context() puede activar una llamada delegreturn síncrona que se bloquea al no estar marcada como privilegiada. En su lugar, asegúrese de que la llamada a nfs4_inode_return_delegation_on_close() capture la devolución delegreturn y la programe de forma asíncrona.
CWE CWE-667

01 Apr 2025, 16:15

Type Values Removed Values Added
New CVE
Information

Published : 2025-04-01 16:15

Updated : 2025-04-15 16:42

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