CVE Request: Qemu: net: vmxnet: integer overflow in packet initialisation

[P J P <ppandit () redhat com>]

  Hello,

Quick Emulator(Qemu) built with the VMWARE VMXNET3 NIC device support, with 
network abstraction layer is vulnerable to an integer overflow issue. It could 
occur while initialisation of a new packets in the device.

A privileged user inside guest could use this flaw to crash the Qemu instance 
resulting in DoS.

Upstream patch:
---------------
  -> https://lists.gnu.org/archive/html/qemu-devel/2016-08/msg03176.html

This issue was reported by Li Qiang of 360.cn Inc.

Thank you.
--
Prasad J Pandit / Red Hat Product Security Team
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