CVE-2024-42224: Linux Kernel

Medium severity, CVSS 6.1. EPSS: 0.2% chance of exploitation in the next 30 days.

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.

Affected products

• Linux Linux Kernel: from 4.11, before 4.19.318 (fixed in 4.19.318); from 4.20, before 5.4.280 (fixed in 5.4.280); from 5.5, before 5.10.222 (fixed in 5.10.222); from 5.11, before 5.15.163 (fixed in 5.15.163); from 5.16, before 6.1.98 (fixed in 6.1.98); from 6.2, before 6.6.39 (fixed in 6.6.39); …

Published 2024-07-30. Last modified 2026-08-04.