(RHSA-2021:1125) Low: virt:8.3 and virt-devel:8.3 security and bug fix update

The Advanced Virtualization module provides the user-space component for running virtual machines that use KVM in environments managed by Red Hat products.

Security Fix(es):

• qemu: out-of-bound heap buffer access via an interrupt ID field (CVE-2021-20221)

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):

• Libvirt shouldn’t set the MTU of an unmanaged tap/macvtap device, it should just pass the mtu to the guest (BZ#1924681)

• libvirtd crashes in virEventThreadWorker (BZ#1942010)