Stack overflow in XHCI for EDK II may allow an unauthenticated user to potentially enable denial of service via local access.
https://lists.debian.org/debian-lts-announce/2021/04/msg00032.html
https://edk2-docs.gitbooks.io/security-advisory/content/xhci-stack-local-stack-overflow.html
https://access.redhat.com/errata/RHSA-2019:2437
https://access.redhat.com/errata/RHSA-2019:2125
http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00046.html
http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00019.html