Important CentOS qemu-kvm Security Update


libcacard-1.5.3-105.el7_2.3.i686.rpm, libcacard-1.5.3-105.el7_2.3.x86_64.rpm, libcacard-devel-1.5.3-105.el7_2.3.i686.rpm, libcacard-devel-1.5.3-105.el7_2.3.x86_64.rpm, libcacard-tools-1.5.3-105.el7_2.3.x86_64.rpm, qemu-img-1.5.3-105.el7_2.3.x86_64.rpm, qemu-kvm-1.5.3-105.el7_2.3.src.rpm, qemu-kvm-1.5.3-105.el7_2.3.x86_64.rpm, qemu-kvm-common-1.5.3-105.el7_2.3.x86_64.rpm, qemu-kvm-tools-1.5.3-105.el7_2.3.x86_64.rpm,
2018-01-18 11:11
2017-07-27 19:10
2017-04-01 19:09
2017-01-05 20:13


Updated qemu-kvm packages that fix one security issue and one bug are now
available for Red Hat Enterprise Linux 7.

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

KVM (Kernel-based Virtual Machine) is a full virtualization solution for
Linux on AMD64 and Intel 64 systems. The qemu-kvm package provides the
user-space component for running virtual machines using KVM.

An out-of-bounds read/write flaw was discovered in the way QEMU's Firmware
Configuration device emulation processed certain firmware configurations.
A privileged (CAP_SYS_RAWIO) guest user could use this flaw to crash the
QEMU process instance or, potentially, execute arbitrary code on the host
with privileges of the QEMU process. (CVE-2016-1714)

Red Hat would like to thank Donghai Zhu of Alibaba for reporting this

This update also fixes the following bugs:

* Incorrect handling of the last sector of an image file could trigger an
assertion failure in qemu-img. This update changes the handling of the last
sector, and no assertion failure occurs. (BZ#1298828)

All qemu-kvm users are advised to upgrade to these updated packages, which
contain backported patches to correct these issues. 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.
Please see

Am I vulnerable?

The constraints below list the versions that this vulnerability is patched in, and versions that are unaffected. If a patch is ready but unrealeased, then it is pending.

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Affected package information

Release Package Patched in
7 libcacard libcacard-1.5.3-105.el7_2.3.i686.rpm
libcacard libcacard-1.5.3-105.el7_2.3.x86_64.rpm
libcacard-devel libcacard-devel-1.5.3-105.el7_2.3.i686.rpm
libcacard-devel libcacard-devel-1.5.3-105.el7_2.3.x86_64.rpm
libcacard-tools libcacard-tools-1.5.3-105.el7_2.3.x86_64.rpm
qemu-img qemu-img-1.5.3-105.el7_2.3.x86_64.rpm
qemu-kvm qemu-kvm-1.5.3-105.el7_2.3.src.rpm
qemu-kvm qemu-kvm-1.5.3-105.el7_2.3.x86_64.rpm
qemu-kvm-common qemu-kvm-common-1.5.3-105.el7_2.3.x86_64.rpm
qemu-kvm-tools qemu-kvm-tools-1.5.3-105.el7_2.3.x86_64.rpm