Executive Summary

This vulnerability is a reference count leak in the Linux kernel's ASoC audio-graph-card component. Specifically, in the function __graph_for_each_link(), the of_get_next_child() function increments the reference count of a node but the previous node's reference count is decremented incorrectly in an error path, leading to a leak. The fix involves properly calling of_node_put() for the cpu_ep node to manage the reference count correctly.

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Impact Analysis

The vulnerability causes a reference count leak in kernel memory management, which can lead to resource leaks and potentially degrade system stability or performance over time. However, there is no indication that it leads to direct security breaches such as privilege escalation or data corruption.

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