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CVE-2025-21711

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: net/rose: prevent integer overflows in rose_setsockopt() In case of possible unpredictably large arguments passed to rose_setso…

Published Feb 27, 2025CWE-190EPSS 0.23%

Overview

CVE-2025-21711 is a medium-severity vulnerability. It was published on February 27, 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:

net/rose: prevent integer overflows in rose_setsockopt()

In case of possible unpredictably large arguments passed to

rose_setsockopt() and multiplied by extra values on top of that,

integer overflows may occur.

Do the safest minimum and fix these issues by checking the

contents of 'opt' and returning -EINVAL if they are too large. Also,

switch to unsigned int and remove useless check for negative 'opt'

in ROSE_IDLE case.

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/352daa50946c3bbb662432e8daf54d6760796589Refgit.kernel.org/stable/c/4bdd449977e2364a53d0b2a5427e71beb1cd702dRefgit.kernel.org/stable/c/9bdee49ad6bbd26ab5e13cc6731e54fb1b6c1dcaRefgit.kernel.org/stable/c/b8583b54455cbec2fc038fa32b6700890b369815Refgit.kernel.org/stable/c/d08f4074f9c69f7e95502587eb1b258a965ba7f0Refgit.kernel.org/stable/c/d640627663bfe7d8963c7615316d7d4ef60f3b0bRefgit.kernel.org/stable/c/e5338930a29d0ab2a5af402f5f664aeba0d1a676Reflists.debian.org/debian-lts-announce/2025/03/msg00028.htmlReflists.debian.org/debian-lts-announce/2025/05/msg00030.htmlRefcert-portal.siemens.com/productcert/html/ssa-265688.html

How CyberStrike helps

Frequently asked questions

What is CVE-2025-21711?

CVE-2025-21711 is a medium-severity vulnerability. It was published on February 27, 2025 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2025-21711?

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-2025-21711?

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-2025-21711?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2025-21711 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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