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CVE-2022-49134

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: mlxsw: spectrum: Guard against invalid local ports When processing events generated by the device's firmware, the driver protec…

Published Feb 26, 2025CWE-476EPSS 0.23%

Overview

CVE-2022-49134 is a medium-severity vulnerability. It was published on February 26, 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:

mlxsw: spectrum: Guard against invalid local ports

When processing events generated by the device's firmware, the driver

protects itself from events reported for non-existent local ports, but

not for the CPU port (local port 0), which exists, but does not have all

the fields as any local port.

This can result in a NULL pointer dereference when trying access

'struct mlxsw_sp_port' fields which are not initialized for CPU port.

Commit 63b08b1f6834 ("mlxsw: spectrum: Protect driver from buggy firmware")

already handled such issue by bailing early when processing a PUDE event

reported for the CPU port.

Generalize the approach by moving the check to a common function and

making use of it in all relevant places.

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/4cad27ba2e5a5843a7fab5aa30de2b8e8c3db3a8Refgit.kernel.org/stable/c/bcdfd615f83b4bd04678109bf18022d1476e4bbf

How CyberStrike helps

Frequently asked questions

What is CVE-2022-49134?

CVE-2022-49134 is a medium-severity vulnerability. It was published on February 26, 2025 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2022-49134?

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-2022-49134?

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-2022-49134?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2022-49134 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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