CVE-2018-20125 QEMU: pvrdma: null dereference or excessive memory allocation when creating QP/CQ

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

  Hello,

A Null pointer dereference issue was found in QEMU's implementation of 
VMWare's paravirtual RDMA device. It could occur while creating CQ/QP ring 
objects in pvrdma_ring_init() routine.

A guest user/process could use this flaw to crash QEMU process or allocate 
excessive memory on host resulting in DoS.

Upstream patch:
---------------
  -> https://lists.gnu.org/archive/html/qemu-devel/2018-12/msg02823.html

This issue was reported by Li Qiang.

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