Issued:
2017-02-27
Updated:
2017-02-27

RHSA-2017:0332 - Important: qemu-kvm-rhev security update

Synopsis

Important: qemu-kvm-rhev security update

Type/Severity

Security Advisory Important

Topic

An update for qemu-kvm-rhev is now available for Red Hat Enterprise Linux OpenStack Platform 6.0 (Juno) for RHEL 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.

Description

KVM (Kernel-based Virtual Machine) is a full virtualization solution for Linux on a variety of architectures. The qemu-kvm-rhev packages provide the user-space component for running virtual machines that use KVM in environments managed by Red Hat products.

Security Fix(es):

  • Quick emulator (QEMU) built with the Cirrus CLGD 54xx VGA emulator support is vulnerable to an out-of-bounds access issue. It could occur while copying VGA data via bitblt copy in backward mode. A privileged user inside a guest could use this flaw to crash the QEMU process resulting in DoS or potentially execute arbitrary code on the host with privileges of QEMU process on the host. (CVE-2017-2615)

  • Quick emulator (QEMU) built with the Cirrus CLGD 54xx VGA Emulator support is vulnerable to an out-of-bounds access issue. The issue could occur while copying VGA data in cirrus_bitblt_cputovideo. A privileged user inside guest could use this flaw to crash the QEMU process OR potentially execute arbitrary code on host with privileges of the QEMU process. (CVE-2017-2620)

Red Hat would like to thank Wjjzhang (Tencent.com Inc.) and Li Qiang (360.cn Inc.) for reporting CVE-2017-2615.

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.

Affected Products

ProductVersionArch
Red Hat OpenStack6.0x86_64

Updated Packages

  • qemu-kvm-common-rhev-2.6.0-28.el7_3.6.x86_64.rpm
  • qemu-kvm-rhev-2.6.0-28.el7_3.6.x86_64.rpm
  • qemu-kvm-rhev-debuginfo-2.6.0-28.el7_3.6.x86_64.rpm
  • qemu-kvm-tools-rhev-2.6.0-28.el7_3.6.x86_64.rpm
  • qemu-img-rhev-2.6.0-28.el7_3.6.x86_64.rpm
  • qemu-kvm-rhev-2.6.0-28.el7_3.6.src.rpm

Fixes

CVEs

References

Additional information