Buffer overflow in network stack for EDK II may allow unprivileged user to potentially enable escalation of privilege and/or denial of service via network.
https://usn.ubuntu.com/4349-1/
https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03912en_us
https://edk2-docs.gitbooks.io/security-advisory/content/dns-pack-size-check.html
http://lists.opensuse.org/opensuse-security-announce/2019-03/msg00046.html