I found that gdm3 has vulnerabilities: https://lists.ubuntu.com/archives/ubuntu-security-announce/2018-August/004530.html
but I'm not able to update gdm3 to the version 3.28.2-0ubuntu1.4:
sudo apt-get --only-upgrade install gdm3
Reading package lists... Done
Building dependency tree
Reading state information... Done
gdm3 is already the newest version (3.28.0-0ubuntu1).
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
I tried to remove gdm3 and fresh install but it still installs in version 3.28.0.
There is any way I can update gdm3 package? My Linux is Ubuntu 18.04.
