CVE-2017-10806 Qemu: usb-redirect: stack buffer overflow in debug logging

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

  Hello,

Quick emulator(Qemu) built with the USB redirector support is vulnerable to a 
stack buffer overflow flaw. It could occur while logging debug messages when 
the debug mode is enabled in the device.

A user/process could use this flaw to crash the Qemu process on the host 
resulting in DoS.

Upstream patch:
---------------
  -> https://lists.nongnu.org/archive/html/qemu-devel/2017-05/msg03087.html

Reference:
----------
  -> https://bugzilla.redhat.com/show_bug.cgi?id=1468496

This issue was reported by Li Qiang of Qihoo 360 Gear Team.

Thank you.
--
Prasad J Pandit / Red Hat Product Security Team
47AF CE69 3A90 54AA 9045 1053 DD13 3D32 FE5B 041F