Important CentOS qemu-kvm Security Update

Metadata

high
7.7
qemu-guest-agent-0.12.1.2-2.448.el6_6.3.i686.rpm, qemu-guest-agent-0.12.1.2-2.448.el6_6.3.x86_64.rpm, qemu-img-0.12.1.2-2.448.el6_6.3.x86_64.rpm, qemu-kvm-0.12.1.2-2.448.el6_6.3.src.rpm, qemu-kvm-0.12.1.2-2.448.el6_6.3.x86_64.rpm, qemu-kvm-tools-0.12.1.2-2.448.el6_6.3.x86_64.rpm
CVE-2015-3456
rhn.redhat.com, lists.centos.org
2015-05-13
2017-07-27 19:09
Important CentOS kvm Security Update
Important CentOS xen Security Update
Important CentOS qemu-kvm Security Update
CVE-2015-3456 qemu-kvm
CVE-2015-3456 qemu
CVE-2015-3456 xen
CVE-2015-3456 virtualbox
CVE-2015-3456
2017-04-01 19:09
2017-01-05 20:13

Description


Updated qemu-kvm packages that fix one security issue are now available for
Red Hat Enterprise Linux 6.

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 memory access flaw was found in the way QEMU's virtual
Floppy Disk Controller (FDC) handled FIFO buffer access while processing
certain FDC commands. A privileged guest user could use this flaw to crash
the guest or, potentially, execute arbitrary code on the host with the
privileges of the host's QEMU process corresponding to the guest.
(CVE-2015-3456)

Red Hat would like to thank Jason Geffner of CrowdStrike for reporting
this issue.

All qemu-kvm users 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.
Please see https://www.redhat.com/footer/terms-of-use.html

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
6 qemu-guest-agent qemu-guest-agent-0.12.1.2-2.448.el6_6.3.i686.rpm
qemu-guest-agent qemu-guest-agent-0.12.1.2-2.448.el6_6.3.x86_64.rpm
qemu-img qemu-img-0.12.1.2-2.448.el6_6.3.x86_64.rpm
qemu-kvm qemu-kvm-0.12.1.2-2.448.el6_6.3.src.rpm
qemu-kvm qemu-kvm-0.12.1.2-2.448.el6_6.3.x86_64.rpm
qemu-kvm-tools qemu-kvm-tools-0.12.1.2-2.448.el6_6.3.x86_64.rpm