Description

In the Linux kernel, the following vulnerability has been resolved: net: mdio: Check regmap pointer returned by device_node_to_regmap() The call to device_node_to_regmap() in airoha_mdio_probe() can return an ERR_PTR() if regmap initialization fails. Currently, the driver stores the pointer without validation, which could lead to a crash if it is later dereferenced. Add an IS_ERR() check and return the corresponding error code to make the probe path more robust.

References 2

• git.kernel.org https://git.kernel.org/stable/c/b2b526c2cf57d14ee269e012ed179081871f45a1
• git.kernel.org https://git.kernel.org/stable/c/dc8ed3823473bb38ba43cfb34f1e1c1baa22f975

Remediation