Linux Kernel NULL Pointer Dereference Vulnerability in ASoC: SOF: Intel

A NULL pointer dereference vulnerability has been identified in the Linux kernel's ASoC: SOF: Intel component. This issue arises when the function snd_dma_alloc_pages() fails and returns an 'ENOMEM' error, yet snd_dma_free_pages() is still called. The error handling is inadequate, leading to a NULL pointer dereference. This vulnerability has been observed in the error logs, which indicate a memory allocation failure followed by a kernel NULL pointer dereference, causing a page fault error.

Impact

Exploitation of this vulnerability leads to a kernel NULL pointer dereference, causing a page fault error due to a supervisor read access violation in kernel mode.