HIGH
The blkcg_init_queue function in block/blk-cgroup.c in the Linux kernel before 4.11 allows local users to cause a denial of service (double free) or possibly have unspecified other impact by triggering a creation failure.
https://github.com/torvalds/linux/commit/9b54d816e00425c3a517514e0d677bb3cec49258
https://usn.ubuntu.com/3654-1/
https://usn.ubuntu.com/3654-2/
Source: MITRE
Published: 2018-02-25
Updated: 2019-03-04
Type: CWE-415
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:3.0/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