CVE-2019-12247 QEMU: qemu-guest-agent: integer overflow while running guest-exec command

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

  Hello,

An integer overflow issue was found in the QEMU Guest Agent in QEMU, while 
reading argument list passed to the 'guest-exec' qmp command. An attacker 
could exploit this by sending a crafted QMP command to the agent via a 
listening socket to trigger the overflow. It may crash the QEMU guest agent, 
resulting in DoS.

Upstream patch:
---------------
  -> https://lists.gnu.org/archive/html/qemu-devel/2019-05/msg04596.html

This issue was reported by Guoxiang Niu of huawei.com.

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