Red Hat Security Advisory 2014-1268-01 – KVM is a full virtualization solution for Linux on AMD64 and Intel 64 systems. The qemu-kvm-rhev package provides the user-space component for running virtual machines using KVM. Two integer overflow flaws were found in the QEMU block driver for QCOW version 1 disk images. A user able to supply a malicious image file to QEMU or to helper tools used in image conversion by services such as glance and nova could potentially use these flaws to cause memory corruption, resulting in a crash or possibly arbitrary code execution.