CVE-2017-8309 Qemu: audio: host memory leakage via capture buffer

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

  Hello,

Quick Emulator(Qemu) built with the Audio subsystem support is vulnerable to a 
host memory leakage issue. It could occur if a guest user was to repeatedly 
start and stop audio capture.

A privileged user inside guest could use this flaw to exhaust host memory, 
resulting in DoS.

Upstream patch:
---------------
  -> https://lists.gnu.org/archive/html/qemu-devel/2017-04/msg05587.html

Reference:
----------
  -> https://bugzilla.redhat.com/show_bug.cgi?id=1446517

This issue was reported by Jiang Xin (PSIRT Huawei inc.)

'CVE-2017-8309' allocated via -> http://cveform.mitre.org/

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