RHSA-2015:0795: Important: qemu-kvm-rhev security update

First published: Thu Apr 09 2015(Updated: )

KVM (Kernel-based Virtual Machine) is a full virtualization solution for<br>Linux on AMD64 and Intel 64 systems. The qemu-kvm-rhev package provides the<br>user-space component for running virtual machines using KVM, in<br>environments managed by Red Hat Enterprise Linux OpenStack Platform.<br>It was found that the Cirrus blit region checks were insufficient.<br>A privileged guest user could use this flaw to write outside of<br>VRAM-allocated buffer boundaries in the host's QEMU process address space<br>with attacker-provided data. (CVE-2014-8106)<br>This issue was discovered by Paolo Bonzini of Red Hat.<br>All users of qemu-kvm-rhev are advised to upgrade to these updated<br>packages, which contain a backported patch to correct this issue. After<br>installing this update, shut down all running virtual machines. Once all<br>virtual machines have shut down, start them again for this update to take<br>effect.<br>

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