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Red Hat: RHSA-2019-1968-01 Important: qemu-kvm-rhev Heap Overflow Fix

red hat
Calendar Grey July 30, 2019
Dist Redhat Esm H88
New release for qemu-kvm-rhev, resolving critical vulnerabilities and errors in Red Hat Virtualization.
An update for qemu-kvm-rhev is now available for Red Hat Virtualization for Red Hat Virtualization Host 7

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

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):
* CVE-2018-20815 QEMU: device_tree: heap buffer overflow while loading device tree blob
* CVE-2019-6778 QEMU: slirp: heap buffer overflow in tcp_em
This update fixes the following bug:
* 1705364 RHV VM pauses when 'dd' issued inside guest to a direct lun configured as virtio-scsi with scsi-passthrough
Users of qemu-kvm are advised to upgrade to these updated packages. 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.

Topics%20covered

Topics Covered

security advisory Red Hat security fix important heap overflow qemu-kvm-rhev tcp buffer overflow

References

https://access.redhat.com/security/cve/CVE-2018-20815 https://access.redhat.com/security/cve/CVE-2019-6778 https://access.redhat.com/security/updates/classification/#important

Package List

Red Hat Virtualization 4 Management Agent for RHEL 7 Hosts:
Source: qemu-kvm-rhev-2.12.0-18.el7_6.7.src.rpm
ppc64le: qemu-img-rhev-2.12.0-18.el7_6.7.ppc64le.rpm qemu-kvm-common-rhev-2.12.0-18.el7_6.7.ppc64le.rpm qemu-kvm-rhev-2.12.0-18.el7_6.7.ppc64le.rpm qemu-kvm-rhev-debuginfo-2.12.0-18.el7_6.7.ppc64le.rpm qemu-kvm-tools-rhev-2.12.0-18.el7_6.7.ppc64le.rpm
x86_64: qemu-img-rhev-2.12.0-18.el7_6.7.x86_64.rpm qemu-kvm-common-rhev-2.12.0-18.el7_6.7.x86_64.rpm qemu-kvm-rhev-2.12.0-18.el7_6.7.x86_64.rpm qemu-kvm-rhev-debuginfo-2.12.0-18.el7_6.7.x86_64.rpm qemu-kvm-tools-rhev-2.12.0-18.el7_6.7.x86_64.rpm
RHV-M 4.2:
Source: qemu-kvm-rhev-2.12.0-18.el7_6.7.src.rpm
x86_64: qemu-img-rhev-2.12.0-18.el7_6.7.x86_64.rpm qemu-kvm-common-rhev-2.12.0-18.el7_6.7.x86_64.rpm qemu-kvm-rhev-2.12.0-18.el7_6.7.x86_64.rpm qemu-kvm-rhev-debuginfo-2.12.0-18.el7_6.7.x86_64.rpm qemu-kvm-tools-rhev-2.12.0-18.el7_6.7.x86_64.rpm
RHV-M 4.3:
Source: qemu-kvm-rhev-2.12.0-18.el7_6.7.src.rpm
x86_64: qemu-img-rhev-2.12.0-18.el7_6.7.x86_64.rpm qemu-kvm-common-rhev-2.12.0-18.el7_6.7.x86_64.rpm qemu-kvm-rhev-2.12.0-18.el7_6.7.x86_64.rpm qemu-kvm-rhev-debuginfo-2.12.0-18.el7_6.7.x86_64.rpm qemu-kvm-tools-rhev-2.12.0-18.el7_6.7.x86_64.rpm
These packages are GPG signed by Red Hat for security. Our key and

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2019:1968-01
Product: Red Hat Virtualization
Advisory URL: https://access.redhat.com/errata/RHSA-2019:1968
Issue date: 2019-07-30

Topic

An update for qemu-kvm-rhev is now available for Red Hat Virtualization forRed Hat Virtualization Host 7.Red Hat Product Security has rated this update as having a Importantsecurity impact. 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 Red Hat security fix important heap overflow qemu-kvm-rhev tcp buffer overflow

Relevant Releases Architectures

RHV-M 4.2 - x86_64

RHV-M 4.3 - x86_64

Red Hat Virtualization 4 Management Agent for RHEL 7 Hosts - ppc64le, x86_64

Bugs Fixed

1664205 - CVE-2019-6778 QEMU: slirp: heap buffer overflow in tcp_emu()

1693101 - CVE-2018-20815 QEMU: device_tree: heap buffer overflow while loading device tree blob

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