CVE-2025-38400: Linux kernel · nfs: Clean up /proc/net/rpc/nfs when nfs_fs_proc_net_init() fails.
Affects Linux kernelSource CVE Database V5
Not known to be exploited · fixed in e8d6f3ab59468e230f3253efe5cb63efa35289f7 : update Linux kernel when convenient.
Data as of 5 Nov 2026, 21:20 UTC
Rated Low by Threat Radar's AI analysis · No CVSS score from NVD or the CNA
Thin evidence
One scorer or none- CISA SSVC
- Exploitation
- No evidence of active exploitation and no public proof of concept
- Automatable
- Attackers cannot reliably automate steps 1–4 of the kill chain
- Technical impact
- Limited control over the software or limited information exposure
CISA SSVC assessment, 2026-11-05.
- Patch
- Available – fixed in e8d6f3ab59468e230f3253efe5cb63efa35289f7, d0877c479f44fe475f4c8c02c88ce9ad43e90298, b92397ce96743e4cc090207e2df2a856cb4cef08 +11
Exploitation evidence
Disclosed: evidence found.
CVE published 25 Jul 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 5 Nov 2026.
What to do
Upgrade to a fixed release listed under Affected software.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| LinuxLinux | Affected
| Fixed in
|
| LinuxLinux | Affected
| Fixed in– |
AI-suggested
The vulnerability has been fixed in multiple Linux kernel versions as listed. Users should upgrade to the fixed versions to resolve the issue. No additional mitigation is required beyond applying the official patches.
Description
A vulnerability in the Linux kernel's NFS subsystem was fixed by properly cleaning up the /proc/net/rpc/nfs directory when the initialization function nfs_fs_proc_net_init() fails. Previously, failure in this function left the directory in an inconsistent state, causing warnings and potential resource leaks during cleanup.
References
- git.kernel.org/stable/c/8785701fd7cd52ae74c0d2b35b82568df74e9dbb (opens in a new tab)
- git.kernel.org/stable/c/412534a1fb76958b88dca48360c6f3ad4f3390f4 (opens in a new tab)
- git.kernel.org/stable/c/b92397ce96743e4cc090207e2df2a856cb4cef08 (opens in a new tab)
- git.kernel.org/stable/c/7701c245ff1ac1a126bf431e72b24547519046ff (opens in a new tab)
- git.kernel.org/stable/c/d0877c479f44fe475f4c8c02c88ce9ad43e90298 (opens in a new tab)
- git.kernel.org/stable/c/3c94212b57bedec3a386ef3da1ef00602f5c3d1d (opens in a new tab)
- git.kernel.org/stable/c/6acf340f8c1d296bcf535986175f5d0d6f2aab09 (opens in a new tab)
- git.kernel.org/stable/c/e8d6f3ab59468e230f3253efe5cb63efa35289f7 (opens in a new tab)
- lists.debian.org/debian-lts-announce/2025/10/msg00008.html (opens in a new tab)
- lists.debian.org/debian-lts-announce/2025/10/msg00007.html (opens in a new tab)
- cert-portal.siemens.com/productcert/html/ssa-082556.html (opens in a new tab)