Riskcovery

CVE-2025-38567

nfsd: avoid ref leak in nfsd_open_local_fh()

State
Published
Severity
Not scored
Published
Aug 19, 2025
Updated
May 23, 2026
Reserved
Apr 16, 2025

Read the record on cve.org

Description

In the Linux kernel, the following vulnerability has been resolved:

nfsd: avoid ref leak in nfsd_open_local_fh()

If two calls to nfsd_open_local_fh() race and both successfully call nfsd_file_acquire_local(), they will both get an extra reference to the net to accompany the file reference stored in *pnf.

One of them will fail to store (using xchg()) the file reference in *pnf and will drop that reference but WON'T drop the accompanying reference to the net. This leak means that when the nfs server is shut down it will hang in nfsd_shutdown_net() waiting for &nn->nfsd_net_free_done.

This patch adds the missing nfsd_net_put().

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • 986a21ace186433e0397a59491646edad8c8d636 to before fcb0a417fddb605530c4837e0996620f8ed38023Affected
  • e6f7e1487ab528a6c653bd0d42812ff2942846cd to before c4bf8f26c51e51bbb840935659a7b3b65a802c07Affected
  • e6f7e1487ab528a6c653bd0d42812ff2942846cd to before e5a73150776f18547ee685c9f6bfafe549714899Affected
  • 6.15.3 to before 6.15.10Affected
LinuxLinux
  • 6.16Affected
  • before 6.16Not affected
  • 6.15.10 through 6.15.*Not affected
  • 6.16.1 through 6.16.*Not affected
  • 6.17 and laterNot affected

References

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.