A workaround for this issue is to enable another check mechanism by installing libimvirt-perl if I understand correctly.
Bug#1026026: /usr/sbin/needrestart: typo prevents vm detection and leads to error in microcode check
- Bug#1026026: /usr/sbin/needrestart: typo prevents vm det... Jérôme Charaoui
- Bug#1026026: /usr/sbin/needrestart: typo prevents v... Antoine Beaupré