Linux Kernel NULL Pointer Dereference Vulnerability in ASoC RT711-SDCA Component

A vulnerability in the Linux kernel's ASoC RT711-SDCA component can lead to a NULL pointer dereference, causing a kernel panic. This issue arises because the initial settings are applied before the codec probe function assigns the component. If an I/O error occurs during this process, it triggers a NULL pointer dereference. The vulnerability has been addressed by modifying the component's device reference to ensure proper assignment before the initial settings are applied.

Impact

Exploitation of this vulnerability causes a kernel panic due to a NULL pointer dereference, leading to a denial of service by crashing the system.