Michael S. Tsirkin of Red Hat discovered a buffer overflow flaw in the way qemu processed MAC addresses table update requests from the guest. A privileged guest user could use this flaw to corrupt qemu process

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Debian Security Advisory DSA-2910-1                   This email address is being protected from spambots. You need JavaScript enabled to view it.
http://www.debian.org/security/                      Salvatore Bonaccorso
April 18, 2014                         http://www.debian.org/security/faq
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Package        : qemu-kvm
CVE ID         : CVE-2014-0150

Michael S. Tsirkin of Red Hat discovered a buffer overflow flaw in the
way qemu processed MAC addresses table update requests from the guest.

A privileged guest user could use this flaw to corrupt qemu process
memory on the host, which could potentially result in arbitrary code
execution on the host with the privileges of the qemu process.

For the oldstable distribution (squeeze), this problem has been fixed in
version 0.12.5+dfsg-5+squeeze11.

For the stable distribution (wheezy), this problem has been fixed in
version 1.1.2+dfsg-6+deb7u1.

We recommend that you upgrade your qemu-kvm packages.

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: http://www.debian.org/security/

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