Linux Kernel Refcount Leak Vulnerability in rpmsg qcom_smd Component

A refcount leak vulnerability has been identified in the Linux kernel's rpmsg qcom_smd component. The issue arises in the qcom_smd_parse_edgeof_parse_phandle() function, which returns a node pointer with an incremented reference count. The vulnerability occurs because the function does not properly decrement the reference count when the node pointer 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 such as use-after-free vulnerabilities or memory exhaustion.