[RHSA-2016:1585-01] Moderate: qemu-kvm security update

[news 28]

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Red Hat Security Advisory

 

Synopsis: Moderate: qemu-kvm security update

Advisory ID: RHSA-2016:1585-01

Product: Red Hat Enterprise Linux

Advisory URL: https://rhn.redhat.com/errata/RHSA-2016-1585.html

Issue date: 2016-08-09

CVE Names: CVE-2016-5403

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1. Summary:

 

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 impact

of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which

gives a detailed severity rating, is available for each vulnerability from

the CVE link(s) in the References section.

 

2. 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

 

3. Description:

 

KVM (Kernel-based Virtual Machine) is a full virtualization solution for

Linux on AMD64 and Intel 64 systems. The qemu-kvm packages provide the

user-space component for running virtual machines using KVM.

 

Security Fix(es):

 

* Quick emulator(Qemu) built with the virtio framework is vulnerable to an

unbounded memory allocation issue. It was found that a malicious guest user

could submit more requests than the virtqueue size permits. Processing a

request allocates a VirtQueueElement and therefore causes unbounded memory

allocation on the host controlled by the guest. (CVE-2016-5403)

 

Red Hat would like to thank hongzhenhao (Marvel Team) for reporting this

issue.

 

4. 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.

 

5. Bugs fixed (https://bugzilla.redhat.com/):

 

1358359 - CVE-2016-5403 Qemu: virtio: unbounded memory allocation on host via guest leading to DoS

 

6. Package List:

 

Red Hat Enterprise Linux Desktop (v. 6):

 

Source:

qemu-kvm-0.12.1.2-2.491.el6_8.3.src.rpm

 

i386:

qemu-guest-agent-0.12.1.2-2.491.el6_8.3.i686.rpm

qemu-kvm-debuginfo-0.12.1.2-2.491.el6_8.3.i686.rpm

 

x86_64:

qemu-guest-agent-0.12.1.2-2.491.el6_8.3.x86_64.rpm

qemu-img-0.12.1.2-2.491.el6_8.3.x86_64.rpm

qemu-kvm-0.12.1.2-2.491.el6_8.3.x86_64.rpm

qemu-kvm-debuginfo-0.12.1.2-2.491.el6_8.3.x86_64.rpm

qemu-kvm-tools-0.12.1.2-2.491.el6_8.3.x86_64.rpm

 

Red Hat Enterprise Linux HPC Node (v. 6):

 

Source:

qemu-kvm-0.12.1.2-2.491.el6_8.3.src.rpm

 

x86_64:

qemu-guest-agent-0.12.1.2-2.491.el6_8.3.x86_64.rpm

qemu-img-0.12.1.2-2.491.el6_8.3.x86_64.rpm

qemu-kvm-0.12.1.2-2.491.el6_8.3.x86_64.rpm

qemu-kvm-debuginfo-0.12.1.2-2.491.el6_8.3.x86_64.rpm

qemu-kvm-tools-0.12.1.2-2.491.el6_8.3.x86_64.rpm

 

Red Hat Enterprise Linux Server (v. 6):

 

Source:

qemu-kvm-0.12.1.2-2.491.el6_8.3.src.rpm

 

i386:

qemu-guest-agent-0.12.1.2-2.491.el6_8.3.i686.rpm

qemu-kvm-debuginfo-0.12.1.2-2.491.el6_8.3.i686.rpm

 

ppc64:

qemu-guest-agent-0.12.1.2-2.491.el6_8.3.ppc64.rpm

qemu-kvm-debuginfo-0.12.1.2-2.491.el6_8.3.ppc64.rpm

 

x86_64:

qemu-guest-agent-0.12.1.2-2.491.el6_8.3.x86_64.rpm

qemu-img-0.12.1.2-2.491.el6_8.3.x86_64.rpm

qemu-kvm-0.12.1.2-2.491.el6_8.3.x86_64.rpm

qemu-kvm-debuginfo-0.12.1.2-2.491.el6_8.3.x86_64.rpm

qemu-kvm-tools-0.12.1.2-2.491.el6_8.3.x86_64.rpm

 

Red Hat Enterprise Linux Workstation (v. 6):

 

Source:

qemu-kvm-0.12.1.2-2.491.el6_8.3.src.rpm

 

i386:

qemu-guest-agent-0.12.1.2-2.491.el6_8.3.i686.rpm

qemu-kvm-debuginfo-0.12.1.2-2.491.el6_8.3.i686.rpm

 

x86_64:

qemu-guest-agent-0.12.1.2-2.491.el6_8.3.x86_64.rpm

qemu-img-0.12.1.2-2.491.el6_8.3.x86_64.rpm

qemu-kvm-0.12.1.2-2.491.el6_8.3.x86_64.rpm

qemu-kvm-debuginfo-0.12.1.2-2.491.el6_8.3.x86_64.rpm

qemu-kvm-tools-0.12.1.2-2.491.el6_8.3.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/

 

7. References:

 

https://access.redhat.com/security/cve/CVE-2016-5403

https://access.redhat.com/security/updates/classification/#moderate

 

8. Contact:

 

The Red Hat security contact is . More contact

details at https://access.redhat.com/security/team/contact/

 

Copyright 2016 Red Hat, Inc.

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