(RHSA-2021:3943) Moderate: RHV-H security update (redhat-virtualization-host) 4.3.19

The redhat-virtualization-host packages provide the Red Hat Virtualization Host.
These packages include redhat-release-virtualization-host. Red Hat
Virtualization Hosts (RHVH) are installed using a special build of Red Hat
Enterprise Linux with only the packages required to host virtual machines. RHVH features a Cockpit user interface for monitoring the host’s resources and
performing administrative tasks.

Security Fix(es):

• kernel: Improper handling of VM_IO|VM_PFNMAP vmas in KVM can bypass RO checks (CVE-2021-22543)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Bug Fix(es):

• Red Hat Virtualization Host has been rebased on Red Hat Enterprise Linux 7.9 Batch #9. (BZ#2010171)