Fedora 28 : 2:qemu (2018-44f8a7454d) (Spectre)

New CPU features for speculative store bypass CVE-2018-3639 On Intel x86 hosts, the 'ssbd' feature must be explicitly added to any virtual machines that are not using host-passthrough/host-model CPU setup. NB this requires new microcode too, which is not yet available in Fedora microcodectl RPMs...