It was discovered that the glibc DNS resolver dereferenced a NULL pointer
when processing a specific, but valid resource record type.
Name: Florian Weimer (Red Hat Product Security)
Created glibc tracking bugs for this issue:
Affects: fedora-all [bug 1251403]
This issue has been addressed in the following products:
Red Hat Enterprise Linux 7
Via RHSA-2018:0805 https://access.redhat.com/errata/RHSA-2018:0805