** DISPUTED ** An issue was discovered in the Linux kernel through 5.6.2. mpol_parse_str in mm/mempolicy.c has a stack-based out-of-bounds write because an empty nodelist is mishandled during mount option parsing, aka CID-aa9f7d5172fa. NOTE: Someone in the security community disagrees that this is a vulnerability because the issue “is a bug in parsing mount options which can only be specified by a privileged user, so triggering the bug does not grant any powers not already held.”.
https://github.com/torvalds/linux/commit/aa9f7d5172fac9bf1f09e678c35e287a40a7b7dd
https://lists.debian.org/debian-lts-announce/2020/06/msg00011.html
https://lists.debian.org/debian-lts-announce/2020/06/msg00012.html
https://lists.debian.org/debian-lts-announce/2020/06/msg00013.html
https://usn.ubuntu.com/4363-1/
https://usn.ubuntu.com/4364-1/
https://usn.ubuntu.com/4367-1/
https://usn.ubuntu.com/4368-1/
https://usn.ubuntu.com/4369-1/
Source: MITRE
Published: 2020-04-06
Updated: 2020-06-10
Type: CWE-787
Base Score: 3.6
Vector: AV:L/AC:L/Au:N/C:N/I:P/A:P
Impact Score: 4.9
Exploitability Score: 3.9
Severity: LOW
Base Score: 6
Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H
Impact Score: 5.2
Exploitability Score: 0.8
Severity: MEDIUM