CVE-2020-13361 QEMU: es1370: OOB access due to incorrect frame count leads to DoS

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

  Hello,

An OOB access issue was found in the ES1370 audio device emulator of the QEMU. 
The issue occurs in 'audio_pcm_sw_read', while reading audio byte stream from 
a channel, if the channel frame count is set to a malicious value. A guest 
user/process may use this flaw to crash the QEMU process on the host resulting 
in DoS scenario.

Upstream patch:
---------------
  -> https://lists.gnu.org/archive/html/qemu-devel/2020-05/msg07230.html

This issue was reported by Ren Ding & Hanqing Zhao of SSLab Georgia Tech. 
'CVE-2020-13361' requested via -> https://cveform.mitre.org/


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