CVE-2017-6505 Qemu: usb: an infinite loop issue in ohci_service_ed_list

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

  Hello,

Quick Emulator built with the USB OHCI Emulation support is vulnerable to an 
infinite loop issue. It could occur while processing an endpoint list 
descriptor in ohci_service_ed_list().

A guest user/process could use this flaw to crash Qemu process resulting in 
DoS.

Upstream patch:
---------------
  -> http://git.qemu-project.org/?p=qemu.git;a=commitdiff;h=95ed56939eb2eaa4e2f349fe6dcd13ca4edfd8fb

Reference:
----------
  -> https://bugzilla.redhat.com/show_bug.cgi?id=1429432

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

'CVE-2017-6505' allocated via -> http://cveform.mitre.org/

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