CVE-2017-15268. Qemu: I/O: potential memory exhaustion via websock connection to VNC

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

  Hello,

Quick Emulator(Qemu) built with the I/O channels websockets support is 
vulnerable to a memory leakage issue. It could occur while sending screen 
updates to a client, which is slow to read and process them further.

A privileged guest user could use this flaw to cause a DoS on the host and/or 
potentially crash the Qemu process instance on the host.

Upstream patch:
---------------
  -> https://lists.gnu.org/archive/html/qemu-devel/2017-10/msg02278.html

Reference:
----------
  -> https://bugzilla.redhat.com/show_bug.cgi?id=1496879

CVE assigned via https://cveform.mitre.org/

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