Linux Kernel Refcount Leak Vulnerability in MTD Maps

A refcount leak vulnerability has been identified in the Linux kernel's MTD (Memory Technology Device) subsystem. The issue arises in the 'of_flash_probe_versatile' function, where 'of_find_matching_node_and_match' returns a node pointer with an incremented reference count. The vulnerability occurs because the reference count is not properly decremented when the node is no longer needed, leading to a memory management issue.

Impact

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