Linux Kernel PowerPC FSL RIO Refcount Leak Vulnerability

A refcount leak vulnerability has been identified in the Linux kernel's PowerPC FSL RIO component. The issue arises in the 'fsl_rio_setupof_parse_phandle()' function, which returns a node pointer with an incremented reference count. If the pointer is not needed anymore, the reference count should be decremented using 'of_node_put()' to prevent the leak. The vulnerability has been addressed by adding the missing 'of_node_put()' call.

Impact

Exploitation of this vulnerability could lead to a refcount leak, causing memory management issues such as improper resource deallocation.