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CVE-2025-22026

5.5 · MEDIUM

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…

Published Apr 16, 2025CWE-252EPSS 0.21%

Overview

CVE-2025-22026 is a medium-severity vulnerability. It was published on April 16, 2025 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refgit.kernel.org/stable/c/30405b23b4d5e2a596fb756d48119d7293194e75Refgit.kernel.org/stable/c/51107e768de6821b68aa34a136d07bc7a09cf6c3Refgit.kernel.org/stable/c/51da899c209a9624e48be416bd30e7ed5cd6c3d8Refgit.kernel.org/stable/c/6a59b70fe71ec66c0dd19e2c279c71846a3fb2f0Refgit.kernel.org/stable/c/930b64ca0c511521f0abdd1d57ce52b2a6e3476bRefgit.kernel.org/stable/c/9d9456185fd5f1891c74354ee297f19538141eadRefgit.kernel.org/stable/c/e31957a819e60cf0bc9a49408765e6095fd3d046Refgit.kernel.org/stable/c/e4316bd85e42b01125b2aab691769234a388b8a3

How CyberStrike helps

Frequently asked questions

What is CVE-2025-22026?

CVE-2025-22026 is a medium-severity vulnerability. It was published on April 16, 2025 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2025-22026?

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2025-22026?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2025-22026?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2025-22026 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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