linux-oracle:focal is vulnerable denial of service.
git://git.launchpad.net/ubuntu-cve-tracker/tree/active/CVE-2021-3656
bugzilla.redhat.com/show_bug.cgi?id=1983988
git.kernel.org/pub/scm/virt/kvm/kvm.git/commit/?id=c7dfa4009965a9b2d7b329ee970eb8da0d32f0bc
github.com/torvalds/linux/commit/c7dfa4009965a9b2d7b329ee970eb8da0d32f0bc
www.openwall.com/lists/oss-security/2021/08/16/1