Linux Kernel Refcount Leak Vulnerability in Microchip DSA Driver

A refcount leak vulnerability has been identified in the Linux kernel's Microchip DSA driver, specifically within the ksz_switch_register() function. The issue arises because the function fails to properly release a reference count for a node obtained from of_get_child_by_name(), leading to a memory management flaw.

Impact

Exploitation of this vulnerability causes a refcount leak, which can lead to memory management issues such as use-after-free vulnerabilities or memory exhaustion.