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.
[
{
"product": "Linux kernel through version 4.9-rc1",
"vendor": "n/a",
"versions": [
{
"status": "affected",
"version": "Linux kernel through version 4.9-rc1"
}
]
}
]
git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=2fae9e5a7babada041e2e161699ade2447a01989
seclists.org/oss-sec/2017/q4/238
www.securityfocus.com/bid/101790
bugzilla.redhat.com/show_bug.cgi?id=1505905
github.com/torvalds/linux/commit/2fae9e5a7babada041e2e161699ade2447a01989
usn.ubuntu.com/3583-1/
usn.ubuntu.com/3583-2/