Linux Kernel Refcount Leak Vulnerability in ARM CNS3XXX Component

A refcount leak vulnerability has been identified in the ARM CNS3XXX component of the Linux kernel. The issue arises in the function 'cns3xxx_initof_find_compatible_node()', which returns a pointer to a node with an incremented reference count. The vulnerability occurs because the function fails to properly decrement the reference count before returning, leading to a memory leak. The missing 'of_node_put()' call should be added to prevent this refcount leak.

Impact

Exploitation of this vulnerability leads to a memory leak, where reference counts are not properly managed, potentially causing increased memory usage over time.