virt: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. Nightly[0322] - KVM guest fails to find zipl boot menu index (qemu-kvm)

CVE(s):
CVE-2020-13754
hw/pci/msix.c in QEMU 4.2.0 allows guest OS users to trigger an out-of-bounds access via a crafted address in an msi-x mmio operation.
CVE-2021-3504
A flaw was found in the hivex library in versions before 1.3.20. It is caused due to a lack of bounds check within the hivex_open function. An attacker could input a specially crafted Windows Registry (hive) file which would cause hivex to read memory beyond its normal bounds or cause the program to crash. The highest threat from this vulnerability is to system availability.
CVE-2020-27617
eth_get_gso_type in net/eth.c in QEMU 4.2.1 allows guest OS users to trigger an assertion failure. A guest can crash the QEMU process via packet data that lacks a valid Layer 3 protocol.
CVE-2021-3416
A potential stack overflow via infinite loop issue was found in various NIC emulators of QEMU in versions up to and including 5.2.0. The issue occurs in loopback mode of a NIC wherein reentrant DMA checks get bypassed. A guest user/process may use this flaw to consume CPU cycles or crash the QEMU process on the host resulting in DoS scenario.
CVE-2021-20221
An out-of-bounds heap buffer access issue was found in the ARM Generic Interrupt Controller emulator of QEMU up to and including qemu 4.2.0on aarch64 platform. The issue occurs because while writing an interrupt ID to the controller memory area, it is not masked to be 4 bits wide. It may lead to the said issue while updating controller state fields and their subsequent processing. A privileged guest user may use this flaw to crash the QEMU process on the host resulting in DoS scenario.

Modularity name: virt
Stream name: rhel