qemu security update

CentOS Errata and Security Advisory CESA-2016:2585

Kernel-based Virtual Machine (KVM) 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):

• An integer overflow flaw and an out-of-bounds read flaw were found in the way QEMU’s VGA emulator set certain VGA registers while in VBE mode. A privileged guest user could use this flaw to crash the QEMU process instance. (CVE-2016-3712)

• An infinite loop flaw was found in the way QEMU’s e1000 NIC emulation implementation processed data using transmit or receive descriptors under certain conditions. A privileged user inside a guest could use this flaw to crash the QEMU instance. (CVE-2016-1981)

Red Hat would like to thank Zuozhi Fzz (Alibaba Inc.) for reporting CVE-2016-3712.

Additional Changes:

For detailed information on changes in this release, see the Red Hat Enterprise Linux 7.3 Release Notes linked from the References section.

Merged security bulletin from advisories:
https://lists.centos.org/pipermail/centos-cr-announce/2016-November/029919.html

Affected packages:
qemu-img
qemu-kvm
qemu-kvm-common
qemu-kvm-tools

Upstream details at:
https://access.redhat.com/errata/RHSA-2016:2585