qemu-kvm - security update

Multiple vulnerabilities have been found in qemu-kvm:

• CVE-2016-8576
  qemu-kvm built with the USB xHCI controller emulation support is vulnerable
  to an infinite loop issue. It could occur while processing USB command ring
  in xhci_ring_fetch.
• CVE-2016-8577
  qemu-kvm built with the virtio-9p back-end support is vulnerable to a memory
  leakage issue. It could occur while doing a I/O read operation in
  v9fs_read() routine.
• CVE-2016-8578
  qemu-kvm built with the virtio-9p back-end support is vulnerable to a null
  pointer dereference issue. It could occur while doing an I/O vector
  unmarshalling operation in v9fs_iov_vunmarshal() routine.
• CVE-2016-8669
  qemu-kvm built with the 16550A UART emulation support is vulnerable to a
  divide by zero issue. It could occur while updating serial device parameters
  in serial_update_parameters.

For Debian 7 Wheezy, these problems have been fixed in version
1.1.2+dfsg-6+deb7u17.

We recommend that you upgrade your qemu-kvm 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;