CVE request Qemu: usb: hcd-ehci: memory leak in ehci_process_itd

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

  Hello,

Qemu emulator(Qemu) built with the USB EHCI emulation support is vulnerable to 
a memory leakage flaw. It could occur while processing isochronous transfer 
descriptors(iTD), with buffer page select(PG) index that falls beyond buffer 
page array area.

A privileged user inside guest could use this flaw to leak Qemu memory bytes 
leading to a DoS on the host.

Upstream fix:
-------------
  -> https://lists.gnu.org/archive/html/qemu-devel/2016-09/msg06609.html

Reference:
----------
  -> https://bugzilla.redhat.com/show_bug.cgi?id=1382668

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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