The driver_override implementation in drivers/base/platform.c in the Linux kernel before 4.12.1 allows local users to gain privileges by leveraging a race condition between a read operation and a store operation that involve different overrides.
http://www.debian.org/security/2017/dsa-3981
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.12.1
http://www.securityfocus.com/bid/100651
https://bugzilla.redhat.com/show_bug.cgi?id=1489078
https://bugzilla.suse.com/show_bug.cgi?id=1057474
https://github.com/torvalds/linux/commit/6265539776a0810b7ce6398c27866ddb9c6bd154
Source: MITRE
Published: 2017-09-08
Updated: 2019-10-03
Type: CWE-362
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: 7
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Impact Score: 5.9
Exploitability Score: 1
Severity: HIGH