Related Vulnerabilities: CVE-2019-3820  

A partial screen lock bypass via keybindings has been found in gdm <= 3.30.2, allowing a local attacker to unlock a session under certain circumstances.

Severity High

Remote No

Type Access restriction bypass

Description

A partial screen lock bypass via keybindings has been found in gdm <= 3.30.2, allowing a local attacker to unlock a session under certain circumstances.

AVG-879 gdm 3.30.2-2 High Vulnerable

https://gitlab.gnome.org/GNOME/gnome-shell/issues/851