The snd_usb_create_streams function in sound/usb/card.c in the Linux kernel before 4.13.6 allows local users to cause a denial of service (out-of-bounds read and system crash) or possibly have unspecified other impact via a crafted USB device.
https://usn.ubuntu.com/3754-1/
https://lists.debian.org/debian-lts-announce/2017/12/msg00004.html
https://groups.google.com/d/msg/syzkaller/rDzv5RP_f2M/M5au06qmAwAJ
https://github.com/torvalds/linux/commit/bfc81a8bc18e3c4ba0cbaa7666ff76be2f998991