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Red Hat Virtualization 4.2: Important Security Fixes for qemu-kvm-rhev

red hat
Calendar Grey March 5, 2020
Dist Redhat Esm H88
Canonical has unveiled a significant patch for the ubuntu-server-kvm, tackling several vulnerabilities and correcting various issues.
An update for qemu-kvm-rhev is now available for Red Hat Virtualization Engine 4.2

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

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

After installing this update, shut down all running virtual machines. Once all virtual machines have shut down, start them again for this update to take effect.

Summary

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):
* hw: TSX Transaction Asynchronous Abort (TAA) (CVE-2019-11135)
* QEMU: block: iscsi: OOB heap access via an unexpected response of iSCSI Server (CVE-2020-1711)
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):
* [Intel 7.6.z Bug] [KVM][CLX] CPUID_7_0_EDX_ARCH_CAPABILITIES is not enabled in VM qemu-kvm-rhev (BZ#1730601)
* qemu-kvm-rhev: backport cpuidle-haltpoll support (BZ#1746281)
Enhancement(s):
* [Intel 7.7 FEAT] MDS_NO exposure to guest - qemu-kvm-rhev (BZ#1743632)

Topics%20covered

Topics Covered

security advisory bug fix important KVM Red Hat Virtualization iscsi access TSX issue

References

https://access.redhat.com/security/cve/CVE-2019-11135 https://access.redhat.com/security/cve/CVE-2020-1711 https://access.redhat.com/security/updates/classification#important https://access.redhat.com/articles/tsx-asynchronousabort

Package List

RHV-M 4.2:
Source: qemu-kvm-rhev-2.12.0-18.el7_6.9.src.rpm
x86_64: qemu-img-rhev-2.12.0-18.el7_6.9.x86_64.rpm qemu-kvm-common-rhev-2.12.0-18.el7_6.9.x86_64.rpm qemu-kvm-rhev-2.12.0-18.el7_6.9.x86_64.rpm qemu-kvm-rhev-debuginfo-2.12.0-18.el7_6.9.x86_64.rpm qemu-kvm-tools-rhev-2.12.0-18.el7_6.9.x86_64.rpm
These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from https://access.redhat.com/security/team/key


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2020:0730-01
Product: Red Hat Virtualization
Advisory URL: https://access.redhat.com/errata/RHSA-2020:0730
Issue date: 2020-03-05

Topic

An update for qemu-kvm-rhev is now available for Red Hat VirtualizationEngine 4.2.Red Hat Product Security has rated this update as having a security impactof Important. A Common Vulnerability Scoring System (CVSS) base score,which gives a detailed severity rating, is available for each vulnerabilityfrom the CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory bug fix important KVM Red Hat Virtualization iscsi access TSX issue

Relevant Releases Architectures

RHV-M 4.2 - x86_64

Bugs Fixed

1746281 - qemu-kvm-rhev: backport cpuidle-haltpoll support [rhel-7.6.z]

1753062 - CVE-2019-11135 hw: TSX Transaction Asynchronous Abort (TAA)

1794290 - CVE-2020-1711 QEMU: block: iscsi: OOB heap access via an unexpected response of iSCSI Server

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