CVE-2020-13754 QEMU: msix: OOB access during mmio operations may lead to DoS

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

  Hello,

An OOB access issue was found in the Message Signalled Interrupt (MSI-X) 
device support of QEMU. It could occur while performing MSI-X mmio operations 
when a guest sent address goes beyond the mmio region. A guest user/process 
may use this flaw to crash the QEMU process resulting in DoS scenario.

Proposed patch:
---------------
  -> https://lists.gnu.org/archive/html/qemu-devel/2020-06/msg00004.html

This issue was reported by Ren Ding & Hanqing Zhao of SSLab Georgia Tech. And 
also independently reported by Alexander Bulekov , Anatoly Trosinenko(CC'd). 
'CVE-2020-13754' requested via -> http://cveform.mitre.org/

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