Provide references for CVE-2018-6556.
Where can I find more information about CVE-2018-6556?
References are available at: https://usn.ubuntu.com/usn/usn-3730-1, https://bugs.launchpad.net/ubuntu/+source/lxc/+bug/1783591, https://security.gentoo.org/glsa/201808-02, https://bugzilla.suse.com/show_bug.cgi?id=988348, http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00074.html, http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00076.html, http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00091.html, http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00073.html.