[3.5.y.z extended stable] Patch "wanxl: fix info leak in ioctl" has been added to staging queue

[Luis Henriques]

This is a note to let you know that I have just added a patch titled

    wanxl: fix info leak in ioctl

to the linux-3.5.y-queue branch of the 3.5.y.z extended stable tree 
which can be found at:

 http://kernel.ubuntu.com/git?p=ubuntu/linux.git;a=shortlog;h=refs/heads/linux-3.5.y-queue

If you, or anyone else, feels it should not be added to this tree, please 
reply to this email.

For more information about the 3.5.y.z tree, see
https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable

Thanks.
-Luis

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>From 5ab996fb130fc74e8b34e4501133fbbed5bd18c0 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Salva=20Peir=C3=B3?= <speiro at ai2.upv.es>
Date: Wed, 16 Oct 2013 12:46:50 +0200
Subject: [PATCH] wanxl: fix info leak in ioctl
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

commit 2b13d06c9584b4eb773f1e80bbaedab9a1c344e1 upstream.

The wanxl_ioctl() code fails to initialize the two padding bytes of
struct sync_serial_settings after the ->loopback member. Add an explicit
memset(0) before filling the structure to avoid the info leak.

Signed-off-by: Salva Peiró <speiro at ai2.upv.es>
Signed-off-by: David S. Miller <davem at davemloft.net>
Signed-off-by: Luis Henriques <luis.henriques at canonical.com>
---
 drivers/net/wan/wanxl.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/wan/wanxl.c b/drivers/net/wan/wanxl.c
index feb7541..ccd496b 100644
--- a/drivers/net/wan/wanxl.c
+++ b/drivers/net/wan/wanxl.c
@@ -355,6 +355,7 @@ static int wanxl_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
 			ifr->ifr_settings.size = size; /* data size wanted */
 			return -ENOBUFS;
 		}
+		memset(&line, 0, sizeof(line));
 		line.clock_type = get_status(port)->clocking;
 		line.clock_rate = 0;
 		line.loopback = 0;
--
1.8.3.2