Linux Kernel Refcount Leak Vulnerability in DRM MCDE Component

A refcount leak vulnerability has been identified in the Linux kernel's DRM MCDE component. This issue arises because each iteration of the 'for_each_available_child_of_node()' function decreases the reference count of the previous node, but the count is not properly decremented when exiting the loop. As a result, this oversight leads to a refcount leak. The vulnerability has been addressed by adding the missing 'of_node_put()' function to correct the reference count management.

Impact

Exploitation of this vulnerability could lead to a refcount leak, potentially causing memory management issues.