A vulnerability was found in libvirt >= 4.1.0 in the virtlockd-admin.socket and virtlogd-admin.socket systemd units. A missing SocketMode configuration parameter allows any user on the host to connect using virtlockd-admin-sock or virtlogd-admin-sock and perform administrative tasks against the virtlockd and virtlogd daemons.
https://usn.ubuntu.com/4021-1/
https://security.libvirt.org/2019/0003.html
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-10132
https://access.redhat.com/errata/RHSA-2019:1455