CVE-2017-9373 Qemu: ide: ahci host memory leakage during hotunplug

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

   Hello,

Quick emulator built with the IDE AHCI Emulation support is vulnerable to a 
host memory leakage issue. It could occur while hot-unplugging the AHCI 
device.

A privileged user inside guest could use this flaw to leak host memory 
resulting in DoS.

Upstream patch:
---------------
  -> http://git.qemu.org/?p=qemu.git;a=commitdiff;h=d68f0f778e7f4fbd674627274267f269e40f0b04

Reference:
----------
  -> https://bugzilla.redhat.com/show_bug.cgi?id=1458270

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


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