(RHSA-2021:3061) Moderate: virt:rhel and virt-devel:rhel security and bug fix update

Kernel-based Virtual Machine (KVM) offers a full virtualization solution for Linux on numerous hardware platforms. The virt:rhel module contains packages which provide user-space components used to run virtual machines using KVM. The packages also provide APIs for managing and interacting with the virtualized systems.

Security Fix(es):

• QEMU: msix: OOB access during mmio operations may lead to DoS (CVE-2020-13754)

• hivex: Buffer overflow when provided invalid node key length (CVE-2021-3504)

• QEMU: net: an assert failure via eth_get_gso_type (CVE-2020-27617)

• QEMU: net: infinite loop in loopback mode may lead to stack overflow (CVE-2021-3416)

• 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):

• cannot restart default network and firewalld: iptables: No chain/target/match by that name. (BZ#1958301)

• RHEL8.4 Nightly[0322] - KVM guest fails to find zipl boot menu index (qemu-kvm) (BZ#1975679)