CVE-2022-49752 Information

Description

In the Linux kernel the following vulnerability has been resolved:

device property: fix of node refcount leak in fwnode_graph_get_next_endpoint()

The ‘parent’ returned by fwnode_graph_get_port_parent() with refcount incremented when ‘prev’ is not NULL it needs be put when finish using it.

Because the parent is const introduce a new variable to store the returned fwnode then put it before returning from fwnode_graph_get_next_endpoint().

Reference

https://git.kernel.org/stable/c/39af728649b05e88a2b40e714feeee6451c3f18e https://git.kernel.org/stable/c/7701a4bd45c11f9a289d8f262fad05705a012339 https://git.kernel.org/stable/c/e75485fc589ec729cc182aa9b41dfb6c15ae6f6e