Linux Kernel Thunderbay Pinctrl Driver Memory Leak Vulnerability

A memory leak vulnerability has been identified in the Intel Thunder Bay pinctrl driver of the Linux kernel. The issue arises in the 'thunderbay_add_functions()' function, which fails to free the 'thunderbay_funcs' memory when an error occurs, leading to a memory leak. This vulnerability affects the Linux kernel stable tree.

Impact

The vulnerability can lead to a memory leak, causing increased memory usage over time, which could potentially degrade system performance.

Reproduction

The vulnerability can be reproduced by invoking the 'thunderbay_add_functions()' function in the Intel Thunder Bay pinctrl driver without proper error handling. This will result in the 'thunderbay_funcs' memory not being freed, causing a memory leak.

Remediation

The vulnerability has been addressed by modifying the 'thunderbay_add_functions()' function to include a memory free operation when an error occurs. Users can apply the latest patches available in the Linux kernel stable tree to remediate this vulnerability.