Red Hat Security Advisory 2017-0621-01 – Kernel-based Virtual Machine is a full virtualization solution for Linux on a variety of architectures. The qemu-kvm packages provide the user-space component for running virtual machines that use KVM. Security Fix: 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.