CVE-2018-19665 Qemu: bt: integer overflow in Bluetooth routines allows memory corruption

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

  Hello,

An integer overflow resulting in memory corruption issue was found in various 
Bluetooth functions. It could occur in routines wherein 'len' parameter is a 
'signed int' which subsequently converts to an unsigned integer resulting in 
memcpy() copying large amounts of memory.

A user inside guest could use this flaw to crash the Qemu process resulting in 
DoS.

Upstream patch:
---------------
  -> https://lists.gnu.org/archive/html/qemu-devel/2018-11/msg03570.html

This issue was reported by Arash TC

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