For those of you wondering the Fedora status of the MDS CVEs that went public on Tuesday. Here is where we stand: kernel-5.0.16 and microcode_ctl-2.1-29 contain the initial mitigations for kernel/microcode, and are in stable updates for F29 and F30, The kernel is still in updates-testing for F28 as it needs karma, but should make it to regular updates soon.
libvirt and qemu have updates in updates-testing across all releases. F29 and F30 updates will push to stable today, and F28 still needs karma.
All updates, once they hit stable, may take a day or two to reach all mirrors, so if you do not see it available, you can keep trying, or go directly to the main mirror.
If you do not know what the MDS CVEs are, or would like more infomation on them, there is a good write up at https://access.redhat.com/security/vulnerabilities/mds
Thanks, Justin