drivers/uwb/uwbd.c in the Linux kernel before 4.13.6 allows local users to cause a denial of service (general protection fault and system crash) or possibly have unspecified other impact via a crafted USB device.
https://www.debian.org/security/2018/dsa-4187
https://usn.ubuntu.com/3754-1/
https://lists.debian.org/debian-lts-announce/2018/05/msg00000.html
https://groups.google.com/d/msg/syzkaller/zROBxKXzHDk/5I6aZ3O2AgAJ
https://github.com/torvalds/linux/commit/bbf26183b7a6236ba602f4d6a2f7cade35bba043