Linux Kernel Refcount Leak Vulnerability in LPC32XX USB Gadget Driver

A refcount leak vulnerability has been identified in the Linux kernel's LPC32XX USB gadget driver. The issue arises in the 'lpc32xx_udc_probeof_parse_phandle()' function, which returns a node pointer with an incremented reference count. The driver fails to release this reference properly when the node is no longer needed, leading to a memory leak. The missing reference count management has been addressed by adding the necessary 'of_node_put()' calls to prevent the leak.

Impact

Exploitation of this vulnerability can lead to a memory leak, where reference counts are not properly managed, potentially causing increased memory usage and degradation of system performance over time.