The tower_probe function in drivers/usb/misc/legousbtower.c in the Linux kernel before 4.8.1 allows local users (who are physically proximate for inserting a crafted USB device) to gain privileges by leveraging a write-what-where condition that occurs after a race condition and a NULL pointer dereference.
http://seclists.org/oss-sec/2017/q4/238
http://www.securityfocus.com/bid/101790
https://bugzilla.redhat.com/show_bug.cgi?id=1505905
https://github.com/torvalds/linux/commit/2fae9e5a7babada041e2e161699ade2447a01989
Source: MITRE
Published: 2017-11-15
Updated: 2019-05-08
Type: CWE-476
Base Score: 6.9
Vector: AV:L/AC:M/Au:N/C:C/I:C/A:C
Impact Score: 10
Exploitability Score: 3.4
Severity: MEDIUM
Base Score: 6.3
Vector: CVSS:3.0/AV:P/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Impact Score: 5.9
Exploitability Score: 0.4
Severity: MEDIUM