RedHat: RHSA-2016-0083:01 Important: qemu-kvm security and bug fix update
Summary
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
issue.
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.
Summary
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/11258
References
https://access.redhat.com/security/cve/CVE-2016-1714 https://access.redhat.com/security/updates/classification/#important
Package List
Red Hat Enterprise Linux Client (v. 7):
Source:
qemu-kvm-1.5.3-105.el7_2.3.src.rpm
x86_64:
libcacard-1.5.3-105.el7_2.3.i686.rpm
libcacard-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.x86_64.rpm
qemu-kvm-common-1.5.3-105.el7_2.3.x86_64.rpm
qemu-kvm-debuginfo-1.5.3-105.el7_2.3.i686.rpm
qemu-kvm-debuginfo-1.5.3-105.el7_2.3.x86_64.rpm
qemu-kvm-tools-1.5.3-105.el7_2.3.x86_64.rpm
Red Hat Enterprise Linux Client Optional (v. 7):
x86_64:
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-kvm-debuginfo-1.5.3-105.el7_2.3.i686.rpm
qemu-kvm-debuginfo-1.5.3-105.el7_2.3.x86_64.rpm
Red Hat Enterprise Linux ComputeNode Optional (v. 7):
Source:
qemu-kvm-1.5.3-105.el7_2.3.src.rpm
x86_64:
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.x86_64.rpm
qemu-kvm-common-1.5.3-105.el7_2.3.x86_64.rpm
qemu-kvm-debuginfo-1.5.3-105.el7_2.3.i686.rpm
qemu-kvm-debuginfo-1.5.3-105.el7_2.3.x86_64.rpm
qemu-kvm-tools-1.5.3-105.el7_2.3.x86_64.rpm
Red Hat Enterprise Linux Server (v. 7):
Source:
qemu-kvm-1.5.3-105.el7_2.3.src.rpm
ppc64:
qemu-img-1.5.3-105.el7_2.3.ppc64.rpm
qemu-kvm-debuginfo-1.5.3-105.el7_2.3.ppc64.rpm
ppc64le:
qemu-img-1.5.3-105.el7_2.3.ppc64le.rpm
qemu-kvm-debuginfo-1.5.3-105.el7_2.3.ppc64le.rpm
x86_64:
libcacard-1.5.3-105.el7_2.3.i686.rpm
libcacard-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.x86_64.rpm
qemu-kvm-common-1.5.3-105.el7_2.3.x86_64.rpm
qemu-kvm-debuginfo-1.5.3-105.el7_2.3.i686.rpm
qemu-kvm-debuginfo-1.5.3-105.el7_2.3.x86_64.rpm
qemu-kvm-tools-1.5.3-105.el7_2.3.x86_64.rpm
Red Hat Enterprise Linux Server Optional (v. 7):
ppc64:
libcacard-1.5.3-105.el7_2.3.ppc.rpm
libcacard-1.5.3-105.el7_2.3.ppc64.rpm
libcacard-devel-1.5.3-105.el7_2.3.ppc.rpm
libcacard-devel-1.5.3-105.el7_2.3.ppc64.rpm
libcacard-tools-1.5.3-105.el7_2.3.ppc64.rpm
qemu-kvm-debuginfo-1.5.3-105.el7_2.3.ppc.rpm
qemu-kvm-debuginfo-1.5.3-105.el7_2.3.ppc64.rpm
ppc64le:
libcacard-1.5.3-105.el7_2.3.ppc64le.rpm
libcacard-devel-1.5.3-105.el7_2.3.ppc64le.rpm
libcacard-tools-1.5.3-105.el7_2.3.ppc64le.rpm
qemu-kvm-debuginfo-1.5.3-105.el7_2.3.ppc64le.rpm
x86_64:
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-kvm-debuginfo-1.5.3-105.el7_2.3.i686.rpm
qemu-kvm-debuginfo-1.5.3-105.el7_2.3.x86_64.rpm
Red Hat Enterprise Linux Workstation (v. 7):
Source:
qemu-kvm-1.5.3-105.el7_2.3.src.rpm
x86_64:
libcacard-1.5.3-105.el7_2.3.i686.rpm
libcacard-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.x86_64.rpm
qemu-kvm-common-1.5.3-105.el7_2.3.x86_64.rpm
qemu-kvm-debuginfo-1.5.3-105.el7_2.3.i686.rpm
qemu-kvm-debuginfo-1.5.3-105.el7_2.3.x86_64.rpm
qemu-kvm-tools-1.5.3-105.el7_2.3.x86_64.rpm
Red Hat Enterprise Linux Workstation Optional (v. 7):
x86_64:
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-kvm-debuginfo-1.5.3-105.el7_2.3.i686.rpm
qemu-kvm-debuginfo-1.5.3-105.el7_2.3.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/
Topic
Updated qemu-kvm packages that fix one security issue and one bug are nowavailable for Red Hat Enterprise Linux 7.Red Hat Product Security has rated this update as having Important securityimpact. A Common Vulnerability Scoring System (CVSS) base score, whichgives a detailed severity rating, is available from the CVE link in theReferences section.
Topic
Relevant Releases Architectures
Red Hat Enterprise Linux Client (v. 7) - x86_64
Red Hat Enterprise Linux Client Optional (v. 7) - x86_64
Red Hat Enterprise Linux ComputeNode Optional (v. 7) - x86_64
Red Hat Enterprise Linux Server (v. 7) - ppc64, ppc64le, x86_64
Red Hat Enterprise Linux Server Optional (v. 7) - ppc64, ppc64le, x86_64
Red Hat Enterprise Linux Workstation (v. 7) - x86_64
Red Hat Enterprise Linux Workstation Optional (v. 7) - x86_64
Bugs Fixed
1296060 - CVE-2016-1714 Qemu: nvram: OOB r/w access in processing firmware configurations
1298828 - [abrt] qemu-img: get_block_status(): qemu-img killed by SIGABRT