A flaw was found in xorg-x11-server in versions before 21.1.2 and before 1.20.14. An out-of-bounds access can occur in the SProcScreenSaverSuspend function. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
https://lists.x.org/archives/xorg-announce/2021-December/003124.html
https://lists.x.org/archives/xorg-announce/2021-December/003122.html
https://www.zerodayinitiative.com/advisories/ZDI-21-1549/
Source: MITRE
Published: 2021-12-17
Updated: 2022-03-30
Type: CWE-119
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