CVE Request: Qemu: scsi: mptsas infinite loop in mptsas_fetch_requests

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

  Hello,

Quick Emulator(Qemu) built with the LSI SAS1068 Host Bus Adapter emulation 
support is vulnerable to an infinite loop issue. It could occur while fetching 
new requests in mptsas_fetch_requests().

A privileged user inside guest could use this flaw to consume excessive host 
resources or crash the Qemu process resulting in DoS.

Upstream patch:
---------------
  -> https://lists.gnu.org/archive/html/qemu-devel/2016-05/msg04027.html

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

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