CVE-2025-21900
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2025-21900
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-21900.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2025-21900
- Downstream
- Related
- Published
- 2025-04-01T15:26:51Z
- Modified
- 2025-10-22T09:46:09.097027Z
- Severity
-
- 5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- NFSv4: Fix a deadlock when recovering state on a sillyrenamed file
- Details
-
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 putnfsopen_context() can trigger a synchronous delegreturn call which deadlocks because it is not marked as privileged.
Instead, ensure that the call to nfs4inodereturndelegationon_close() catches the delegreturn, and schedules it asynchronously.
- References
Affected packages
Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Affected ranges
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introducedadb4b42d19aea91826621a8d0bac94cf2c08f8bcFixed4fe4ae6c2e01d028856b73b6328b12b8945df871
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introducedadb4b42d19aea91826621a8d0bac94cf2c08f8bcFixedf41a60bc43e7abbc636fee78bed0d74c31e738b0
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introducedadb4b42d19aea91826621a8d0bac94cf2c08f8bcFixed8f8df955f078e1a023ee55161935000a67651f38
Affected versions
v6.*
v6.10
v6.11
v6.11-rc1
v6.11-rc2
v6.11-rc3
v6.11-rc4
v6.11-rc5
v6.11-rc6
v6.11-rc7
v6.12
v6.12-rc1
v6.12-rc2
v6.12-rc3
v6.12-rc4
v6.12-rc5
v6.12-rc6
v6.12-rc7
v6.12.1
v6.12.10
v6.12.11
v6.12.12
v6.12.13
v6.12.14
v6.12.15
v6.12.16
v6.12.17
v6.12.2
v6.12.3
v6.12.4
v6.12.5
v6.12.6
v6.12.7
v6.12.8
v6.12.9
v6.13
v6.13-rc1
v6.13-rc2
v6.13-rc3
v6.13-rc4
v6.13-rc5
v6.13-rc6
v6.13-rc7
v6.13.1
v6.13.2
v6.13.3
v6.13.4
v6.13.5
v6.14-rc1
v6.14-rc2
v6.14-rc3