qemu - security update

Multiple vulnerabilities have been found in QEMU:

• CVE-2016-7161
  Heap-based buffer overflow in the .receive callback of xlnx.xps-ethernetlite
  in QEMU (aka Quick Emulator) allows attackers to execute arbitrary code on
  the QEMU host via a large ethlite packet.
• CVE-2016-7170
  The vmsvga_fifo_run function in hw/display/vmware_vga.c in QEMU (aka Quick
  Emulator) is vulnerable to an OOB memory access.
• CVE-2016-7908
  The mcf_fec_do_tx function in hw/net/mcf_fec.c in QEMU (aka Quick Emulator)
  does not properly limit the buffer descriptor count when transmitting
  packets, which allows local guest OS administrators to cause a denial of
  service (infinite loop and QEMU process crash) via vectors involving a
  buffer descriptor with a length of 0 and crafted values in bd.flags.

For Debian 7 Wheezy, these problems have been fixed in version
1.1.2+dfsg-6+deb7u16.

We recommend that you upgrade your qemu packages.

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: <https://wiki.debian.org/LTS&gt;