Debian Security Advisory

DLA-2434-1 gdm3 -- LTS security update

Date Reported:
05 Nov 2020
Affected Packages:
Security database references:
In Mitre's CVE dictionary: CVE-2020-16125.
More information:

It was discovered that there was an issue in the GNOME Display Manager where not detecting any users may make GDM launch initial system setup and thereby permitting the creation of new users with sudo capabilities.

  • CVE-2020-16125

    display: Exit with failure if loading existing users fails

For Debian 9 Stretch, these problems have been fixed in version 3.22.3-3+deb9u3.

We recommend that you upgrade your gdm3 packages.

Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: