Patch "fib_frontend: fix possible NULL pointer dereference" has been added to the 3.13-stable tree

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This is a note to let you know that I've just added the patch titled

    fib_frontend: fix possible NULL pointer dereference

to the 3.13-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     fib_frontend-fix-possible-null-pointer-dereference.patch
and it can be found in the queue-3.13 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.


>From foo@baz Tue Feb  4 09:16:27 PST 2014
From: Oliver Hartkopp <socketcan@xxxxxxxxxxxx>
Date: Thu, 23 Jan 2014 10:19:34 +0100
Subject: fib_frontend: fix possible NULL pointer dereference

From: Oliver Hartkopp <socketcan@xxxxxxxxxxxx>

[ Upstream commit a0065f266a9b5d51575535a25c15ccbeed9a9966 ]

The two commits 0115e8e30d (net: remove delay at device dismantle) and
748e2d9396a (net: reinstate rtnl in call_netdevice_notifiers()) silently
removed a NULL pointer check for in_dev since Linux 3.7.

This patch re-introduces this check as it causes crashing the kernel when
setting small mtu values on non-ip capable netdevices.

Signed-off-by: Oliver Hartkopp <socketcan@xxxxxxxxxxxx>
Acked-by: Eric Dumazet <edumazet@xxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 net/ipv4/fib_frontend.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/net/ipv4/fib_frontend.c
+++ b/net/ipv4/fib_frontend.c
@@ -1047,6 +1047,8 @@ static int fib_netdev_event(struct notif
 	}
 
 	in_dev = __in_dev_get_rtnl(dev);
+	if (!in_dev)
+		return NOTIFY_DONE;
 
 	switch (event) {
 	case NETDEV_UP:


Patches currently in stable-queue which might be from socketcan@xxxxxxxxxxxx are

queue-3.13/fib_frontend-fix-possible-null-pointer-dereference.patch
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