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Red Hat Security Advisory

Synopsis: Important: qemu-kvm-rhev security, bug fix, and enhancement update
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
CVE Names: CVE-2019-11135 CVE-2020-1711
=====================================================================

1. Summary:

An update for qemu-kvm-rhev is now available for Red Hat Virtualization
Engine 4.2.

Red Hat Product Security has rated this update as having a security impact
of Important. 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.

2. Relevant releases/architectures:

RHV-M 4.2 – x86_64

3. 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):

* 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)

4. 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.

5. Bugs fixed (https://bugzilla.redhat.com/):

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

6. 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/

7. 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/solutions/tsx-asynchronousabort

8. Contact:

The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/

Copyright 2020 Red Hat, Inc.
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