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CVE-2021-47252

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: batman-adv: Avoid WARN_ON timing related checks The soft/batadv interface for a queued OGM can be changed during the time the O…

Published May 21, 2024EPSS 0.23%

Overview

CVE-2021-47252 is a medium-severity vulnerability. It was published on May 21, 2024 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:

batman-adv: Avoid WARN_ON timing related checks

The soft/batadv interface for a queued OGM can be changed during the time

the OGM was queued for transmission and when the OGM is actually

transmitted by the worker.

But WARN_ON must be used to denote kernel bugs and not to print simple

warnings. A warning can simply be printed using pr_warn.

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/282baa8104af44e04c4af3e7f933b44267c7f86fRefgit.kernel.org/stable/c/2eb4e0b3631832a4291c8bf4c9db873f60b128c8Refgit.kernel.org/stable/c/45011f2973f6b52cf50db397bb27bf805f5f0e7fRefgit.kernel.org/stable/c/6031daaaf6d5c359c99dfffa102e332df234ff09Refgit.kernel.org/stable/c/77a99aad5bc3ea105806ebae6be3cbadc2fc615eRefgit.kernel.org/stable/c/9f460ae31c4435fd022c443a6029352217a16ac1Refgit.kernel.org/stable/c/e7fbd8184fa9e85f0d648c499841cb7ff6dec9f4Refgit.kernel.org/stable/c/e8e9d2968a9d08bf5c683afca182f1537edebf8dRefgit.kernel.org/stable/c/282baa8104af44e04c4af3e7f933b44267c7f86fRefgit.kernel.org/stable/c/2eb4e0b3631832a4291c8bf4c9db873f60b128c8

How CyberStrike helps

Frequently asked questions

What is CVE-2021-47252?

CVE-2021-47252 is a medium-severity vulnerability. It was published on May 21, 2024 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2021-47252?

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-2021-47252?

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-2021-47252?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2021-47252 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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