fixed 716767 libvirt/5.0.0-1 FYI - The whole code that this bug was talking about was removed in [1]. Given that and how non-active the bug over the years this can at least have severity lowered.
[1]: https://libvirt.org/git/?p=libvirt.git;a=commit;h=1dac5fbbbb06a0341e8087dc33af75c8352d77a4 -- Christian Ehrhardt Software Engineer, Ubuntu Server Canonical Ltd