From: Dan Carpenter <dan.carpenter@oracle.com>
Date: Tue, 3 Sep 2013 09:03:40 +0000 (+0300)
Subject: x25: add a sanity check parsing X.25 facilities
X-Git-Tag: v3.12-rc1~132^2~39
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=80aa4e10963cc7d9b5dd5b2568ce28d74af20bf9;p=pandora-kernel.git

x25: add a sanity check parsing X.25 facilities

This was found with a manual audit and I don't have a reproducer.  We
limit ->calling_len and ->called_len when we get them from
copy_from_user() in x25_ioctl() so when they come from skb->data then
we should cap them there as well.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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