CVE request Qemu: scsi: megasas: host memory leakage in megasas_handle_dcmd

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

  Hello,

Quick Emulator(Qemu) built with the MegaRAID SAS 8708EM2 Host Bus Adapter 
emulation support is vulnerable to a memory leakage issue. It could occur 
while processing MegaRAID Firmware Interface(MFI) command in 
'megasas_handle_dcmd' routine.

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

Upstream patch:
---------------
  -> http://git.qemu.org/?p=qemu.git;a=commit;h=765a707000e838c30b18d712fe6cb3dd8e0435f3

Reference:
----------
  -> https://bugzilla.redhat.com/show_bug.cgi?id=1418342

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

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