CVE request: Kernel: ping: NULL pointer dereference on write to msg_name

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

   Hello,

Linux kernel built with the TCP/IP networking support(CONFIG_NET) is 
vulnerable to a NULL pointer dereference flaw. It could occur via a plain 
read(2) call on a ping socket. Usage of ping sockets is generally restricted 
to privileged users.

A user/program able to read from ping sockets could use this flaw to crash a
system resulting in DoS.

Upstream fix:
-------------
 -> https://git.kernel.org/linus/cf970c002d270c36202bd5b9c2804d3097a52da0

Reference:
----------
 -> https://bugzilla.redhat.com/show_bug.cgi?id=1039046


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