[RHSA-2015:0999-01] Important: qemu-kvm security update

[news 28]

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Red Hat Security Advisory

 

Synopsis: Important: qemu-kvm security update

Advisory ID: RHSA-2015:0999-01

Product: Red Hat Enterprise Linux

Advisory URL: https://rhn.redhat.com/errata/RHSA-2015-0999.html

Issue date: 2015-05-13

CVE Names: CVE-2015-3456

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1. Summary:

 

Updated qemu-kvm packages that fix one security issue are now available for

Red Hat Enterprise Linux 7.

 

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.

 

2. 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, x86_64

Red Hat Enterprise Linux Server Optional (v. 7) - ppc64, x86_64

Red Hat Enterprise Linux Workstation (v. 7) - x86_64

Red Hat Enterprise Linux Workstation Optional (v. 7) - 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 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.

 

4. 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

 

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

 

1218611 - CVE-2015-3456 qemu: fdc: out-of-bounds fifo buffer memory access

 

6. Package List:

 

Red Hat Enterprise Linux Client (v. 7):

 

Source:

qemu-kvm-1.5.3-86.el7_1.2.src.rpm

 

x86_64:

libcacard-1.5.3-86.el7_1.2.i686.rpm

libcacard-1.5.3-86.el7_1.2.x86_64.rpm

qemu-img-1.5.3-86.el7_1.2.x86_64.rpm

qemu-kvm-1.5.3-86.el7_1.2.x86_64.rpm

qemu-kvm-common-1.5.3-86.el7_1.2.x86_64.rpm

qemu-kvm-debuginfo-1.5.3-86.el7_1.2.i686.rpm

qemu-kvm-debuginfo-1.5.3-86.el7_1.2.x86_64.rpm

qemu-kvm-tools-1.5.3-86.el7_1.2.x86_64.rpm

 

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

 

x86_64:

libcacard-devel-1.5.3-86.el7_1.2.i686.rpm

libcacard-devel-1.5.3-86.el7_1.2.x86_64.rpm

libcacard-tools-1.5.3-86.el7_1.2.x86_64.rpm

qemu-kvm-debuginfo-1.5.3-86.el7_1.2.i686.rpm

qemu-kvm-debuginfo-1.5.3-86.el7_1.2.x86_64.rpm

 

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

 

Source:

qemu-kvm-1.5.3-86.el7_1.2.src.rpm

 

x86_64:

libcacard-1.5.3-86.el7_1.2.i686.rpm

libcacard-1.5.3-86.el7_1.2.x86_64.rpm

libcacard-devel-1.5.3-86.el7_1.2.i686.rpm

libcacard-devel-1.5.3-86.el7_1.2.x86_64.rpm

libcacard-tools-1.5.3-86.el7_1.2.x86_64.rpm

qemu-img-1.5.3-86.el7_1.2.x86_64.rpm

qemu-kvm-1.5.3-86.el7_1.2.x86_64.rpm

qemu-kvm-common-1.5.3-86.el7_1.2.x86_64.rpm

qemu-kvm-debuginfo-1.5.3-86.el7_1.2.i686.rpm

qemu-kvm-debuginfo-1.5.3-86.el7_1.2.x86_64.rpm

qemu-kvm-tools-1.5.3-86.el7_1.2.x86_64.rpm

 

Red Hat Enterprise Linux Server (v. 7):

 

Source:

qemu-kvm-1.5.3-86.el7_1.2.src.rpm

 

ppc64:

qemu-img-1.5.3-86.el7_1.2.ppc64.rpm

qemu-kvm-debuginfo-1.5.3-86.el7_1.2.ppc64.rpm

 

x86_64:

libcacard-1.5.3-86.el7_1.2.i686.rpm

libcacard-1.5.3-86.el7_1.2.x86_64.rpm

qemu-img-1.5.3-86.el7_1.2.x86_64.rpm

qemu-kvm-1.5.3-86.el7_1.2.x86_64.rpm

qemu-kvm-common-1.5.3-86.el7_1.2.x86_64.rpm

qemu-kvm-debuginfo-1.5.3-86.el7_1.2.i686.rpm

qemu-kvm-debuginfo-1.5.3-86.el7_1.2.x86_64.rpm

qemu-kvm-tools-1.5.3-86.el7_1.2.x86_64.rpm

 

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

 

ppc64:

libcacard-1.5.3-86.el7_1.2.ppc.rpm

libcacard-1.5.3-86.el7_1.2.ppc64.rpm

libcacard-devel-1.5.3-86.el7_1.2.ppc.rpm

libcacard-devel-1.5.3-86.el7_1.2.ppc64.rpm

libcacard-tools-1.5.3-86.el7_1.2.ppc64.rpm

qemu-kvm-debuginfo-1.5.3-86.el7_1.2.ppc.rpm

qemu-kvm-debuginfo-1.5.3-86.el7_1.2.ppc64.rpm

 

x86_64:

libcacard-devel-1.5.3-86.el7_1.2.i686.rpm

libcacard-devel-1.5.3-86.el7_1.2.x86_64.rpm

libcacard-tools-1.5.3-86.el7_1.2.x86_64.rpm

qemu-kvm-debuginfo-1.5.3-86.el7_1.2.i686.rpm

qemu-kvm-debuginfo-1.5.3-86.el7_1.2.x86_64.rpm

 

Red Hat Enterprise Linux Workstation (v. 7):

 

Source:

qemu-kvm-1.5.3-86.el7_1.2.src.rpm

 

x86_64:

libcacard-1.5.3-86.el7_1.2.i686.rpm

libcacard-1.5.3-86.el7_1.2.x86_64.rpm

qemu-img-1.5.3-86.el7_1.2.x86_64.rpm

qemu-kvm-1.5.3-86.el7_1.2.x86_64.rpm

qemu-kvm-common-1.5.3-86.el7_1.2.x86_64.rpm

qemu-kvm-debuginfo-1.5.3-86.el7_1.2.i686.rpm

qemu-kvm-debuginfo-1.5.3-86.el7_1.2.x86_64.rpm

qemu-kvm-tools-1.5.3-86.el7_1.2.x86_64.rpm

 

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

 

x86_64:

libcacard-devel-1.5.3-86.el7_1.2.i686.rpm

libcacard-devel-1.5.3-86.el7_1.2.x86_64.rpm

libcacard-tools-1.5.3-86.el7_1.2.x86_64.rpm

qemu-kvm-debuginfo-1.5.3-86.el7_1.2.i686.rpm

qemu-kvm-debuginfo-1.5.3-86.el7_1.2.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/

 

7. References:

 

https://access.redhat.com/security/cve/CVE-2015-3456

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 2015 Red Hat, Inc.

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