CVE request Qemu: rng-random: arbitrary stack based allocation leading to corruption

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

  Hello,

Qemu emulator built with the Pseudo Random Number Generator(PRNG) back-end 
support is vulnerable to an arbitrary stack based allocation and memory 
corruption via random bytes issue. It could occur when a guest requests for 
entropy for random number generation.

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

Upstream patch:
---------------
  -> http://git.qemu.org/?p=qemu.git;a=commit;h=60253ed1e6ec6d8e5ef2efe7bf755f475dce9956

Reference:
----------
  -> https://bugzilla.redhat.com/show_bug.cgi?id=1314676

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