This update for gdm provides the following fixes:

This security issue was fixed:

- CVE-2018-14424: The daemon in GDM did not properly unexport display objects
from its D-Bus interface when they are destroyed, which allowed a local
attacker to trigger a use-after-free via a specially crafted sequence of D-Bus
method calls, resulting in a denial of service or potential code execution
(bsc#1103737)

These non-security issues were fixed:

- Enable pam_keyinit module (bsc#1081947)
- Fix a build race in SLE (bsc#1103093)

This update was imported from the SUSE:SLE-15:Update update project.