qemu-kvm - security update

Several vulnerabilities were discovered in qemu-kvm, a full
virtualization solution on x86 hardware.

• CVE-2015-3209
  Matt Tait of Google’s Project Zero security team discovered a flaw
  in the way QEMU’s AMD PCnet Ethernet emulation handles multi-TMD
  packets with a length above 4096 bytes. A privileged guest user in a
  guest with an AMD PCNet ethernet card enabled can potentially use
  this flaw to execute arbitrary code on the host with the privileges
  of the hosting QEMU process.
• CVE-2015-4037
  Kurt Seifried of Red Hat Product Security discovered that QEMU’s
  user mode networking stack uses predictable temporary file names
  when the -smb option is used. An unprivileged user can use this flaw
  to cause a denial of service.

For the oldstable distribution (wheezy), these problems have been fixed
in version 1.1.2+dfsg-6+deb7u8.

We recommend that you upgrade your qemu-kvm packages.