Linux Kernel Refcount Leak Vulnerability in ASoC Mediatek MT8173-RT5650

A refcount leak vulnerability has been identified in the Linux kernel's ASoC Mediatek MT8173-RT5650 component. The issue arises in the 'mt8173_rt5650_dev_probeof_parse_phandle()' function, where a node pointer is returned with an incremented reference count. The vulnerability allows for a memory management error, as the reference count is not properly decremented when the node is no longer needed, leading to potential resource leaks. This refcount leak occurs in certain error handling paths of the function.

Impact

Exploitation of this vulnerability leads to a refcount leak, causing memory management issues that could be exploited to manipulate resource allocation or cause a denial-of-service condition by exhausting available resources.