CVE request Qemu: usb: null pointer dereference in remote NDIS control message handling

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

  Hello,

Qemu emulator built with the USB Net device emulation support is vulnerable to 
a NULL pointer dereference issue. It could occur while processing remote NDIS 
control message packets, when the USB configuration descriptor object is null.

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

Upstream patch:
---------------
  -> https://lists.gnu.org/archive/html/qemu-devel/2016-02/msg02553.html

Reference:
----------
  -> https://bugzilla.redhat.com/show_bug.cgi?id=1302299

This issue was discovered by Qinghao Tang of 360.cn Marvel Team.


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