Linux Kernel Refcount Leak Vulnerability in HDMI Audio Driver

A refcount leak vulnerability has been identified in the Linux kernel's HDMI audio driver for i.MX platforms. The issue arises in the 'imx_hdmi_probeof_find_device_by_node()' function, where a device reference is taken but not properly released. This leak occurs because the function 'devm_kzalloc()' can fail, leaving the reference unreturned, which could lead to memory management issues.

Impact

The vulnerability causes a memory management flaw by leaking device references, which can lead to improper resource handling or exhaustion.