RHSA-2020:3267 - Security Advisory

Topic

An update for qemu-kvm-rhev is now available for Red Hat Virtualization 4 for Red Hat Enterprise Linux 7 and Red Hat Virtualization Engine 4.3.

Red Hat Product Security has rated this update as having a security impact of Low. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Description

KVM (Kernel-based Virtual Machine) is a full virtualization solution for Linux on a variety of architectures. The qemu-kvm-rhev packages provide the user-space component for running virtual machines that use KVM in environments managed by Red Hat products.

Security Fix(es):

• CVE-2019-20382 QEMU: vnc: memory leakage upon disconnect

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):

• Add support for newer glusterfs (BZ#1802216)
• Backport: Passthrough host CPU microcode version to KVM guest if using CPU passthrough to RHEL 7.7/7.8 (BZ#1791653)
• After hot unplug virtio-net and vfio nic, hot plug vfio-pci device fails in Win2019 guest (BZ#1721403)
• qemu-kvm-rhev: Qemu: seccomp: blacklist is not applied to all threads (BZ#1618504)
• Fix overzealous I/O request splitting performance regression (BZ#1819253)

Solution

Before applying this update, make sure all previously released errata
relevant to your system have been applied.

For details on how to apply this update, refer to:

https://access.redhat.com/articles/2974891

Affected Products

• Red Hat Virtualization Manager 4.3 x86_64
• Red Hat Virtualization 4 for RHEL 7 x86_64
• Red Hat Virtualization for IBM Power LE 4 for RHEL 7 ppc64le

Fixes

• BZ - 1721403 - After hot unplug virtio-net and vfio nic, hot plug vfio-pci device fails in Win2019 guest
• BZ - 1791653 - Backport: Passthrough host CPU microcode version to KVM guest if using CPU passthrough to RHEL 7.7/7.8
• BZ - 1802216 - Add support for newer glusterfs
• BZ - 1810390 - CVE-2019-20382 QEMU: vnc: memory leakage upon disconnect
• BZ - 1819253 - Fix overzealous I/O request splitting performance regression

CVEs

• CVE-2018-15746
• CVE-2019-20382

References

• https://access.redhat.com/security/updates/classification/#low