From: Mathias Krause <minipli@googlemail.com>
Date: Sun, 7 Apr 2013 01:51:54 +0000 (+0000)
Subject: iucv: Fix missing msg_namelen update in iucv_sock_recvmsg()
X-Git-Tag: v3.9-rc7~26^2~19^2~8
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a5598bd9c087dc0efc250a5221e5d0e6f584ee88;p=pandora-kernel.git

iucv: Fix missing msg_namelen update in iucv_sock_recvmsg()

The current code does not fill the msg_name member in case it is set.
It also does not set the msg_namelen member to 0 and therefore makes
net/socket.c leak the local, uninitialized sockaddr_storage variable
to userland -- 128 bytes of kernel stack memory.

Fix that by simply setting msg_namelen to 0 as obviously nobody cared
about iucv_sock_recvmsg() not filling the msg_name in case it was set.

Cc: Ursula Braun <ursula.braun@de.ibm.com>
Signed-off-by: Mathias Krause <minipli@googlemail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

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