Issued:
2013-03-07
Updated:
2013-03-07

RHSA-2013:0609 - Important: qemu-kvm security update

Synopsis

Important: qemu-kvm security update

Type/Severity

Security Advisory Important

Topic

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

The Red Hat Security Response Team 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.

Description

KVM (Kernel-based Virtual Machine) is a full virtualization solution for Linux on AMD64 and Intel 64 systems. qemu-kvm is the user-space component for running virtual machines using KVM.

A flaw was found in the way QEMU-KVM emulated the e1000 network interface card when the host was configured to accept jumbo network frames, and a guest using the e1000 emulated driver was not. A remote attacker could use this flaw to crash the guest or, potentially, execute arbitrary code with root privileges in the guest. (CVE-2012-6075)

All users of qemu-kvm should upgrade to these updated packages, which contain backported patches 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.

Solution

Before applying this update, make sure all previously-released errata relevant to your system have been applied.

This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258

Affected Products

ProductVersionArch
Red Hat Storage for Public Cloud (via RHUI)2.1x86_64
Red Hat Gluster Storage Server for On-premise2.1x86_64
Red Hat Enterprise Linux for x86_64 - Extended Update Support6.4x86_64
Red Hat Enterprise Linux for x86_64 - Extended Update Support6.4i386
Red Hat Enterprise Linux for Scientific Computing6x86_64
Red Hat Enterprise Linux Workstation6x86_64
Red Hat Enterprise Linux Workstation6i386
Red Hat Enterprise Linux Server6x86_64
Red Hat Enterprise Linux Server6i386
Red Hat Enterprise Linux Server from RHUI6x86_64
Red Hat Enterprise Linux Server from RHUI6i386
Red Hat Enterprise Linux Server - Retired Extended Life Cycle Support6x86_64
Red Hat Enterprise Linux Server - Extended Update Support from RHUI6.4x86_64
Red Hat Enterprise Linux Server - Extended Update Support from RHUI6.4i386
Red Hat Enterprise Linux Server - Extended Life Cycle Support6x86_64
Red Hat Enterprise Linux Server - Extended Life Cycle Support6i386
Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension6x86_64
Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension6i386
Red Hat Enterprise Linux Server - AUS6.4x86_64
Red Hat Enterprise Linux Desktop6x86_64
Red Hat Enterprise Linux Desktop6i386

Updated Packages

  • qemu-guest-agent-0.12.1.2-2.355.el6_4.2.x86_64.rpm
  • qemu-kvm-0.12.1.2-2.355.el6_4.2.src.rpm
  • qemu-guest-agent-win32-0.12.1.2-2.355.el6_4.2.x86_64.rpm
  • qemu-kvm-debuginfo-0.12.1.2-2.355.el6_4.2.i686.rpm
  • qemu-kvm-tools-0.12.1.2-2.355.el6_4.2.x86_64.rpm
  • qemu-img-0.12.1.2-2.355.el6_4.2.x86_64.rpm
  • qemu-kvm-0.12.1.2-2.355.el6_4.2.x86_64.rpm
  • qemu-guest-agent-0.12.1.2-2.355.el6_4.2.i686.rpm
  • qemu-kvm-debuginfo-0.12.1.2-2.355.el6_4.2.x86_64.rpm

Fixes

CVEs

References

Additional information