CVE-2023-53019: Linux Kernel

High severity, CVSS 7.8. EPSS: 0.2% chance of exploitation in the next 30 days.

In the Linux kernel, the following vulnerability has been resolved: net: mdio: validate parameter addr in mdiobus_get_phy() The caller may pass any value as addr, what may result in an out-of-bounds access to array mdio_map. One existing case is stmmac_init_phy() that may pass -1 as addr. Therefore validate addr before using it.

Affected products

• Linux Linux Kernel: from 4.5, before 4.14.305 (fixed in 4.14.305); from 4.15, before 4.19.272 (fixed in 4.19.272); from 4.20, before 5.4.231 (fixed in 5.4.231); from 5.5, before 5.10.166 (fixed in 5.10.166); from 5.11, before 5.15.91 (fixed in 5.15.91); from 5.16, before 6.1.9 (fixed in 6.1.9); …

Published 2025-03-27. Last modified 2026-06-17.