A flaw was found in the X.Org Server before version 1.20.10. An out-of-bounds access in the XkbSetMap function may lead to a privilege escalation vulnerability. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
https://bugzilla.redhat.com/show_bug.cgi?id=1869139
https://lists.x.org/archives/xorg-announce/2020-December/003066.html
Source: MITRE
Published: 2021-01-20
Updated: 2021-01-26
Type: CWE-119
Base Score: 6.1
Vector: AV:L/AC:L/Au:N/C:P/I:P/A:C
Impact Score: 8.5
Exploitability Score: 3.9
Severity: MEDIUM
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