5.5

CVE-2025-22026: nfsd: don't ignore the return code of svc_proc_register()

Modified
AliasesUBUNTU-CVE-2025-22026DEBIAN-CVE-2025-22026
Published 16-04-2025Last modified 19-06-2026

Vulnerability summary

CVE-2025-22026 is a medium (CVSS 5.5) Unchecked Return Value vulnerability in linux. EPSS estimates a 0.21% chance of exploitation in the next 30 days, higher than 10.7% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
5.5/10
010
Medium · v3.1 (NVD)
EPSS score
0.21%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 42 · Related 25
DLA-4499-1DSA-6163-1RHSA-2025:13946RHSA-2025:14003RHSA-2025:14005RHSA-2025:14744

Timeline

  1. 16-04-2025
    PublishedVulnerability first disclosed.
  2. 19-06-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: nfsd: don't ignore the return code of svc_proc_register() Currently, nfsd_proc_stat_init() ignores the return value of svc_proc_register(). If the procfile creation fails, then the kernel will WARN when it tries to remove the entry later. Fix nfsd_proc_stat_init() to return the same type of pointer as svc_proc_register(), and fix up nfsd_net_init() to check that and fail the nfsd_net construction if it occurs. svc_proc_register() can fail if the dentry can't be allocated, or if an identical dentry already exists. The second case is pretty unlikely in the nfsd_net construction codepath, so if this happens, return -ENOMEM.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

0.21%

Chance of exploitation in the next 30 days

Percentile

11%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.21% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu139 products
  • linuxAll versions (No fix recorded) | < 5.15.0-198.208 | < 6.8.0-100.100
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 5.15.0-1117.124 | < 6.8.0-1046.49
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 5545496966631cd40ad3aa6450be56d0e5773d10, < 51107e768de6821b68aa34a136d07bc7a09cf6c3 | ≥ 73c43bccf25cec9cdec62fc22a513c28a4b28390, < e4316bd85e42b01125b2aab691769234a388b8a3 | ≥ 10ece754df9a799131a1cf3197e9d26c04ddec22, < 51da899c209a9624e48be416bd30e7ed5cd6c3d8 | ≥ 6f8d6ed3426a17f77628cebfb6a6e2c6f2b2496c, < 30405b23b4d5e2a596fb756d48119d7293194e75 | ≥ 93483ac5fec62cc1de166051b219d953bb5e4ef4, < 6a59b70fe71ec66c0dd19e2c279c71846a3fb2f0 | ≥ 93483ac5fec62cc1de166051b219d953bb5e4ef4, < e31957a819e60cf0bc9a49408765e6095fd3d046 | ≥ 93483ac5fec62cc1de166051b219d953bb5e4ef4, < 9d9456185fd5f1891c74354ee297f19538141ead | ≥ 93483ac5fec62cc1de166051b219d953bb5e4ef4, < 930b64ca0c511521f0abdd1d57ce52b2a6e3476b | b7b05f98f3f06fea3986b46e5c7fe2928676b02d | ≥ 5.10.226, < 5.10.259 | ≥ 5.15.166, < 5.15.210 | ≥ 6.1.106, < 6.1.164 | ≥ 6.6.47, < 6.6.125 | ≥ 6.8.10, < 6.9 | 6.9
  • linux_kernel< 6.12.24 | ≥ 6.13, < 6.13.12 | ≥ 6.14, < 6.14.2
Debian1 product
  • linux< 6.1.164-1 | < 6.12.25-1

3 vendors · 142 products

References

38 links
Show all 38 references