In the Linux kernel, the following vulnerability has been resolved: ALSA: usb-audio: Fix possible NULL pointer dereference in snd_usb_pcm_has_fixed_rate() The subs function argument may be NULL, so do not use it before the NULL check.
https://git.kernel.org/stable/c/f57204edc10760c935d8d36ea999dc8acf018030
https://git.kernel.org/stable/c/a474d4ad59cd4642d1b7e3a6c08cef9eca0992c8
https://git.kernel.org/stable/c/92a9c0ad86d47ff4cce899012e355c400f02cfb8