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CVE-2024-42224

7.0 · HIGH

In the Linux kernel, the following vulnerability has been resolved: net: dsa: mv88e6xxx: Correct check for empty list Since commit a3c53be55c95 ("net: dsa: mv88e6xxx: Support multiple MDIO busses…

Published Jul 30, 2024CWE-754EPSS 0.24%

Overview

CVE-2024-42224 is a high-severity vulnerability. It was published on July 30, 2024 and has a CVSS 3.1 base score of 7.0 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.0, rated HIGH. 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: dsa: mv88e6xxx: Correct check for empty list

Since commit a3c53be55c95 ("net: dsa: mv88e6xxx: Support multiple MDIO

busses") mv88e6xxx_default_mdio_bus() has checked that the

return value of list_first_entry() is non-NULL.

This appears to be intended to guard against the list chip->mdios being

empty. However, it is not the correct check as the implementation of

list_first_entry is not designed to return NULL for empty lists.

Instead, use list_first_entry_or_null() which does return NULL if the

list is empty.

Flagged by Smatch.

Compile tested only.

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/2a2fe25a103cef73cde356e6d09da10f607e93f5Refgit.kernel.org/stable/c/3bf8d70e1455f87856640c3433b3660a31001618Refgit.kernel.org/stable/c/3f25b5f1635449036692a44b771f39f772190c1dRefgit.kernel.org/stable/c/47d28dde172696031c880c5778633cdca30394eeRefgit.kernel.org/stable/c/4c7f3950a9fd53a62b156c0fe7c3a2c43b0ba19bRefgit.kernel.org/stable/c/8c2c3cca816d074c75a2801d1ca0dea7b0148114Refgit.kernel.org/stable/c/aa03f591ef31ba603a4a99d05d25a0f21ab1cd89Refgit.kernel.org/stable/c/f75625db838ade28f032dacd0f0c8baca42ecde4Refgit.kernel.org/stable/c/2a2fe25a103cef73cde356e6d09da10f607e93f5Refgit.kernel.org/stable/c/3bf8d70e1455f87856640c3433b3660a31001618

How CyberStrike helps

Frequently asked questions

What is CVE-2024-42224?

CVE-2024-42224 is a high-severity vulnerability. It was published on July 30, 2024 and has a CVSS 3.1 base score of 7.0 (HIGH).

How severe is CVE-2024-42224?

This vulnerability has a CVSS 3.1 base score of 7.0, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2024-42224?

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-2024-42224?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2024-42224 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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