Linux Kernel Refcount Leak Vulnerability in PCI Mediatek Gen3

A refcount leak vulnerability has been identified in the Linux kernel's PCI Mediatek Gen3 component. The issue arises in the 'mtk_pcie_init_irq_domains()' function, where 'of_get_child_by_name()' returns a node pointer with an incremented refcount. The vulnerability can be exploited by failing to release the reference when the node is no longer needed, leading to a memory management issue.

Impact

Exploitation of this vulnerability causes a refcount leak, which can lead to memory management problems.