[RHSA-2017:0987-01] Important: qemu-kvm security update

[news 28]

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Red Hat Security Advisory

 

Synopsis: Important: qemu-kvm security update

Advisory ID: RHSA-2017:0987-01

Product: Red Hat Enterprise Linux

Advisory URL: https://access.redhat.com/errata/RHSA-2017:0987

Issue date: 2017-04-18

CVE Names: CVE-2016-9603

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1. Summary:

 

An update for qemu-kvm is now available for Red Hat Enterprise Linux 7.

 

Red Hat Product Security has rated this update as having a security impact

of Important. 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 Client (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 Workstation (v. 7) - x86_64

 

3. Description:

 

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

Linux on a variety of architectures. The qemu-kvm packages provide the

user-space component for running virtual machines that use KVM.

 

Security Fix(es):

 

* A heap buffer overflow flaw was found in QEMU's Cirrus CLGD 54xx VGA

emulator's VNC display driver support; the issue could occur when a VNC

client attempted to update its display after a VGA operation is performed

by a guest. A privileged user/process inside a guest could use this flaw to

crash the QEMU process or, potentially, execute arbitrary code on the host

with privileges of the QEMU process. (CVE-2016-9603)

 

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/):

 

1430056 - CVE-2016-9603 Qemu: cirrus: heap buffer overflow via vnc connection

 

6. Package List:

 

Red Hat Enterprise Linux Client (v. 7):

 

Source:

qemu-kvm-1.5.3-126.el7_3.6.src.rpm

 

x86_64:

qemu-img-1.5.3-126.el7_3.6.x86_64.rpm

qemu-kvm-1.5.3-126.el7_3.6.x86_64.rpm

qemu-kvm-common-1.5.3-126.el7_3.6.x86_64.rpm

qemu-kvm-debuginfo-1.5.3-126.el7_3.6.x86_64.rpm

qemu-kvm-tools-1.5.3-126.el7_3.6.x86_64.rpm

 

Red Hat Enterprise Linux ComputeNode Optional (v. 7):

 

Source:

qemu-kvm-1.5.3-126.el7_3.6.src.rpm

 

x86_64:

qemu-img-1.5.3-126.el7_3.6.x86_64.rpm

qemu-kvm-1.5.3-126.el7_3.6.x86_64.rpm

qemu-kvm-common-1.5.3-126.el7_3.6.x86_64.rpm

qemu-kvm-debuginfo-1.5.3-126.el7_3.6.x86_64.rpm

qemu-kvm-tools-1.5.3-126.el7_3.6.x86_64.rpm

 

Red Hat Enterprise Linux Server (v. 7):

 

Source:

qemu-kvm-1.5.3-126.el7_3.6.src.rpm

 

ppc64:

qemu-img-1.5.3-126.el7_3.6.ppc64.rpm

qemu-kvm-debuginfo-1.5.3-126.el7_3.6.ppc64.rpm

 

ppc64le:

qemu-img-1.5.3-126.el7_3.6.ppc64le.rpm

qemu-kvm-debuginfo-1.5.3-126.el7_3.6.ppc64le.rpm

 

x86_64:

qemu-img-1.5.3-126.el7_3.6.x86_64.rpm

qemu-kvm-1.5.3-126.el7_3.6.x86_64.rpm

qemu-kvm-common-1.5.3-126.el7_3.6.x86_64.rpm

qemu-kvm-debuginfo-1.5.3-126.el7_3.6.x86_64.rpm

qemu-kvm-tools-1.5.3-126.el7_3.6.x86_64.rpm

 

Red Hat Enterprise Linux Workstation (v. 7):

 

Source:

qemu-kvm-1.5.3-126.el7_3.6.src.rpm

 

x86_64:

qemu-img-1.5.3-126.el7_3.6.x86_64.rpm

qemu-kvm-1.5.3-126.el7_3.6.x86_64.rpm

qemu-kvm-common-1.5.3-126.el7_3.6.x86_64.rpm

qemu-kvm-debuginfo-1.5.3-126.el7_3.6.x86_64.rpm

qemu-kvm-tools-1.5.3-126.el7_3.6.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-2016-9603

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

 

8. Contact:

 

The Red Hat security contact is . More contact

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

 

Copyright 2017 Red Hat, Inc.

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