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Alerts This Week
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Red Hat Enterprise Linux 6: RHSA-2017:0352-01 Critical QEMU-KVM Issue

red hat
Calendar Grey March 1, 2017
Scroller Redhat
Critical patch release for qemu-kvm on RHEL, categorized with a Major impact score; vital for every user.
An update for qemu-kvm is now available for Red Hat Enterprise Linux 6

Solution

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

https://access.redhat.com/articles/11258

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

Kernel-based Virtual Machine (KVM) is a full virtualization solution for Linux on a variety of architectures. The qemu-kvm packages provide the user-space component for running virtual machines that use KVM.
Security Fix(es):
* Quick emulator (QEMU) built with the Cirrus CLGD 54xx VGA Emulator support is vulnerable to an out-of-bounds access issue. The issue could occur while copying VGA data in cirrus_bitblt_cputovideo. A privileged user inside guest could use this flaw to crash the QEMU process OR potentially execute arbitrary code on host with privileges of the QEMU process. (CVE-2017-2620)

Topics%20covered

Topics Covered

security advisory arbitrary code execution Red Hat Enterprise Linux important out-of-bounds qemu-kvm

References

https://access.redhat.com/security/cve/CVE-2017-2620 https://access.redhat.com/security/updates/classification/#important

Package List

Red Hat Enterprise Linux Desktop (v. 6):
Source: qemu-kvm-0.12.1.2-2.491.el6_8.7.src.rpm
i386: qemu-guest-agent-0.12.1.2-2.491.el6_8.7.i686.rpm qemu-kvm-debuginfo-0.12.1.2-2.491.el6_8.7.i686.rpm
x86_64: qemu-guest-agent-0.12.1.2-2.491.el6_8.7.x86_64.rpm qemu-img-0.12.1.2-2.491.el6_8.7.x86_64.rpm qemu-kvm-0.12.1.2-2.491.el6_8.7.x86_64.rpm qemu-kvm-debuginfo-0.12.1.2-2.491.el6_8.7.x86_64.rpm qemu-kvm-tools-0.12.1.2-2.491.el6_8.7.x86_64.rpm
Red Hat Enterprise Linux HPC Node (v. 6):
Source: qemu-kvm-0.12.1.2-2.491.el6_8.7.src.rpm
x86_64: qemu-guest-agent-0.12.1.2-2.491.el6_8.7.x86_64.rpm qemu-img-0.12.1.2-2.491.el6_8.7.x86_64.rpm qemu-kvm-0.12.1.2-2.491.el6_8.7.x86_64.rpm qemu-kvm-debuginfo-0.12.1.2-2.491.el6_8.7.x86_64.rpm qemu-kvm-tools-0.12.1.2-2.491.el6_8.7.x86_64.rpm
Red Hat Enterprise Linux Server (v. 6):
Source: qemu-kvm-0.12.1.2-2.491.el6_8.7.src.rpm
i386: qemu-guest-agent-0.12.1.2-2.491.el6_8.7.i686.rpm qemu-kvm-debuginfo-0.12.1.2-2.491.el6_8.7.i686.rpm
ppc64: qemu-guest-agent-0.12.1.2-2.491.el6_8.7.ppc64.rpm qemu-kvm-debuginfo-0.12.1.2-2.491.el6_8.7.ppc64.rpm
x86_64: qemu-guest-agent-0.12.1.2-2.491.el6_8.7.x86_64.rpm qemu-img-0.12.1.2-2.491.el6_8.7.x86_64.rpm qemu-kvm-0.12.1.2-2.491.el6_8.7.x86_64.rpm qemu-kvm-debuginfo-0.12.1.2-2.491.el6_8.7.x86_64.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2017:0352-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2017:0352.html
Issue date: 2017-03-01

Topic

An update for qemu-kvm is now available for Red Hat Enterprise Linux 6.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 arbitrary code execution Red Hat Enterprise Linux important out-of-bounds qemu-kvm

Relevant Releases Architectures

Red Hat Enterprise Linux Desktop (v. 6) - i386, x86_64

Red Hat Enterprise Linux HPC Node (v. 6) - x86_64

Red Hat Enterprise Linux Server (v. 6) - i386, ppc64, x86_64

Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64

Bugs Fixed

1420484 - CVE-2017-2620 Qemu: display: cirrus: potential arbitrary code execution via cirrus_bitblt_cputovideo

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