CVE-2021-20315: Centos Stream

Medium severity, CVSS 6.1. EPSS: 0.2% chance of exploitation in the next 30 days.

A locking protection bypass flaw was found in some versions of gnome-shell as shipped within CentOS Stream 8, when the "Application menu" or "Window list" GNOME extensions are enabled. This flaw allows a physical attacker who has access to a locked system to kill existing applications and start new ones as the locked user, even if the session is still locked.

Affected products

• Centos Stream: version 8 only
• Gnome Gnome-Shell: before 3.32.2 (fixed in 3.32.2)

Published 2022-02-18. Last modified 2026-06-17.