Description
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.
References (7)
Core 7
Core References
Issue Tracking, Patch, Third Party Advisory x_refsource_confirm
https://bugzilla.redhat.com/show_bug.cgi?id=1505905
Third Party Advisory vendor-advisory
x_refsource_ubuntu
https://usn.ubuntu.com/3583-2/
Issue Tracking, Patch, Vendor Advisory x_refsource_confirm
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=2fae9e5a7babada041e2e161699ade2447a01989
Third Party Advisory vendor-advisory
x_refsource_ubuntu
https://usn.ubuntu.com/3583-1/
Issue Tracking, Mailing List, Third Party Advisory x_refsource_confirm
http://seclists.org/oss-sec/2017/q4/238
Third Party Advisory, VDB Entry vdb-entry
x_refsource_bid
http://www.securityfocus.com/bid/101790
Issue Tracking, Patch, Third Party Advisory x_refsource_confirm
https://github.com/torvalds/linux/commit/2fae9e5a7babada041e2e161699ade2447a01989
Scores
CVSS v3
6.3
EPSS
0.0011
EPSS Percentile
29.0%
Attack Vector
PHYSICAL
CVSS:3.0/AV:P/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Details
CWE
CWE-476
Status
published
Products (6)
canonical/ubuntu_linux
12.04
canonical/ubuntu_linux
14.04
linux/linux_kernel
< 4.8.1
n/a/Linux kernel through version 4.9-rc1
Linux kernel through version 4.9-rc1
redhat/enterprise_linux
5.0
redhat/enterprise_linux
6.0
Published
Nov 15, 2017
Tracked Since
Feb 18, 2026