The do_get_mempolicy function in mm/mempolicy.c in the Linux kernel before 4.12.9 allows local users to cause a denial of service (use-after-free) or possibly have unspecified other impact via crafted system calls.
https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.12.9
https://github.com/torvalds/linux/commit/73223e4e2e3867ebf033a5a8eb2e5df0158ccc99
http://www.securityfocus.com/bid/104093
https://access.redhat.com/errata/RHSA-2018:2164
https://access.redhat.com/errata/RHSA-2018:2395
https://access.redhat.com/errata/RHSA-2018:2384
https://usn.ubuntu.com/3754-1/
https://access.redhat.com/errata/RHSA-2018:2791
https://access.redhat.com/errata/RHSA-2018:2785
https://access.redhat.com/errata/RHSA-2018:2933
https://access.redhat.com/errata/RHSA-2018:2925
https://access.redhat.com/errata/RHSA-2018:2924
https://access.redhat.com/errata/RHSA-2018:3590
https://access.redhat.com/errata/RHSA-2018:3586
Source: MITRE
Published: 2018-05-02
Updated: 2023-02-24
Type: CWE-416
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: 7.8
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Impact Score: 5.9
Exploitability Score: 1.8
Severity: HIGH