Define md-clear CPUID bit.
Assuming an updated host kernel and microcode, the md-clear bit will be automatically exposed to guests using the QEMU "-cpu host" arg, or libvirt "host-model" or "host-passthrough" configurations.
Guests using a named CPU model it must be manually updated to add this extra CPU feature.
Resolves CVE-2018-12126, CVE-2018-12127, CVE-2018-12130, CVE-2019-11091
Updates may require up to 24 hours to propagate to mirrors. If the following command doesn't work, please retry later:
sudo dnf upgrade --refresh --advisory=FEDORA-2019-6e146a714c
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This update has been submitted for testing by berrange.
This update has been pushed to testing.
berrange edited this update.
Installed an f30 guest with host-passthrough CPU type on an f28 host with this update, and the guest return "Mitigation: Clear CPU buffers; SMT Host state unknown". So the VM works, and md_clear is made visible to the guest.
Installed an f30 guest with host-passthrough CPU type on an f28 host with this update, and the guest return "Mitigation: Clear CPU buffers; SMT Host state unknown". So the VM works, and md_clear is made visible to the guest.
This update has been submitted for batched by bodhi.
This update has been submitted for batched by bodhi.
This update has been submitted for stable by bodhi.
This update has been pushed to stable.