The get_endpoints function in drivers/usb/misc/usbtest.c in the Linux kernel through 4.13.11 allows local users to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact via a crafted USB device.
https://github.com/torvalds/linux/commit/7c80f9e4a588f1925b07134bb2e3689335f6c6d8
https://groups.google.com/d/msg/syzkaller/l3870gs3LhA/y79DYQdFBAAJ
https://lists.debian.org/debian-lts-announce/2017/12/msg00004.html
https://usn.ubuntu.com/3617-1/
https://usn.ubuntu.com/3617-2/
https://usn.ubuntu.com/3617-3/
https://usn.ubuntu.com/3619-1/
Source: MITRE
Published: 2017-11-04
Updated: 2018-08-24
Type: CWE-476
Base Score: 7.2
Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C
Impact Score: 10
Exploitability Score: 3.9
Severity: HIGH
Base Score: 6.6
Vector: CVSS:3.0/AV:P/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Impact Score: 5.9
Exploitability Score: 0.7
Severity: MEDIUM