CVE-2024-42224

MediumCVSS 6.1/10Last modified Aug 4, 2026

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.

Metrics

CVSS 3.1 6.1/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H

Weakness enumeration

CWE-754

Affected software

No affected versions have been published.

Timeline

Published
Jul 30, 2024
Last modified
Aug 4, 2026
NVD status
Modified

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CVE-2024-42224: Medium severity, CVSS 6.1 | Vulnix