Go to homepageCyberStrike

Menu

Star on GitHub · 3.2k
Sign inDownload

CVE-2021-47164

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: net/mlx5e: Fix null deref accessing lag dev It could be the lag dev is null so stop processing the event.

Published Mar 25, 2024CWE-476EPSS 0.23%

Overview

CVE-2021-47164 is a medium-severity vulnerability. It was published on March 25, 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:

net/mlx5e: Fix null deref accessing lag dev

It could be the lag dev is null so stop processing the event.

In bond_enslave() the active/backup slave being set before setting the

upper dev so first event is without an upper dev.

After setting the upper dev with bond_master_upper_dev_link() there is

a second event and in that event we have an upper dev.

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/2e4b0b95a489259f9d35a3db17023061f8f3d587Refgit.kernel.org/stable/c/83026d83186bc48bb41ee4872f339b83f31dfc55Refgit.kernel.org/stable/c/bdfd3593a8248eea6ecfcbf7b47b56b86515672dRefgit.kernel.org/stable/c/2e4b0b95a489259f9d35a3db17023061f8f3d587Refgit.kernel.org/stable/c/83026d83186bc48bb41ee4872f339b83f31dfc55Refgit.kernel.org/stable/c/bdfd3593a8248eea6ecfcbf7b47b56b86515672d

How CyberStrike helps

Frequently asked questions

What is CVE-2021-47164?

CVE-2021-47164 is a medium-severity vulnerability. It was published on March 25, 2024 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2021-47164?

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-2021-47164?

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-2021-47164?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2021-47164 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.

Related MEDIUM CVEs from 2021

View all
Browse by year2026202520242023202220212020201920182017201620152014201320122011201020092008200720062005200420032002200120001999