RedHat: RHSA-2015-0891:01 Important: qemu-kvm-rhev security update
Summary
KVM (Kernel-based Virtual Machine) is a full virtualization solution for
Linux on AMD64 and Intel 64 systems. The qemu-kvm-rhev package provides the
user-space component for running virtual machines using KVM, in
environments managed by Red Hat Enterprise Linux OpenStack Platform.
It was found that the Cirrus blit region checks were insufficient.
A privileged guest user could use this flaw to write outside of
VRAM-allocated buffer boundaries in the host's QEMU process address space
with attacker-provided data. (CVE-2014-8106)
This issue was found by Paolo Bonzini of Red Hat.
All users of qemu-kvm-rhev are advised to upgrade to these updated
packages, which contain a backported patch to correct this issue. 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.
This update is available via the Red Hat Network. Details on how to
use the Red Hat Network to apply this update are available at
https://access.redhat.com/articles/11258
References
https://access.redhat.com/security/cve/CVE-2014-8106 https://access.redhat.com/security/updates/classification/#important
Package List
Red Hat Enterprise Linux OpenStack Platform 5.0 for RHEL 6:
Source:
qemu-kvm-rhev-0.12.1.2-2.448.el6_6.2.src.rpm
x86_64:
qemu-img-rhev-0.12.1.2-2.448.el6_6.2.x86_64.rpm
qemu-kvm-rhev-0.12.1.2-2.448.el6_6.2.x86_64.rpm
qemu-kvm-rhev-debuginfo-0.12.1.2-2.448.el6_6.2.x86_64.rpm
qemu-kvm-rhev-tools-0.12.1.2-2.448.el6_6.2.x86_64.rpm
Red Hat Enterprise Linux OpenStack Platform 4.0:
Source:
qemu-kvm-rhev-0.12.1.2-2.448.el6_6.2.src.rpm
x86_64:
qemu-img-rhev-0.12.1.2-2.448.el6_6.2.x86_64.rpm
qemu-kvm-rhev-0.12.1.2-2.448.el6_6.2.x86_64.rpm
qemu-kvm-rhev-debuginfo-0.12.1.2-2.448.el6_6.2.x86_64.rpm
qemu-kvm-rhev-tools-0.12.1.2-2.448.el6_6.2.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-rhev packages that fix one security issue are nowavailable for Red Hat Enterprise Linux OpenStack Platform 4.0 and 5.0 forRed Hat Enterprise Linux 6.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 OpenStack Platform 4.0 - x86_64
Red Hat Enterprise Linux OpenStack Platform 5.0 for RHEL 6 - x86_64
Bugs Fixed
1169454 - CVE-2014-8106 qemu: cirrus: insufficient blit region checks