From: Mathias Krause <minipli@googlemail.com>
Date: Sun, 7 Apr 2013 01:51:55 +0000 (+0000)
Subject: l2tp: fix info leak in l2tp_ip6_recvmsg()
X-Git-Tag: v3.9-rc7~26^2~19^2~7
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b860d3cc62877fad02863e2a08efff69a19382d2;p=pandora-kernel.git

l2tp: fix info leak in l2tp_ip6_recvmsg()

The L2TP code for IPv6 fails to initialize the l2tp_conn_id member of
struct sockaddr_l2tpip6 and therefore leaks four bytes kernel stack
in l2tp_ip6_recvmsg() in case msg_name is set.

Initialize l2tp_conn_id with 0 to avoid the info leak.

Signed-off-by: Mathias Krause <minipli@googlemail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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