Files
linux/include/net
Dan Carpenter b70bb9bb72 sctp: potential read out of bounds in sctp_ulpevent_type_enabled()
[ Upstream commit fa5f7b51fc ]

This code causes a static checker warning because Smatch doesn't trust
anything that comes from skb->data.  I've reviewed this code and I do
think skb->data can be controlled by the user here.

The sctp_event_subscribe struct has 13 __u8 fields and we want to see
if ours is non-zero.  sn_type can be any value in the 0-USHRT_MAX range.
We're subtracting SCTP_SN_TYPE_BASE which is 1 << 15 so we could read
either before the start of the struct or after the end.

This is a very old bug and it's surprising that it would go undetected
for so long but my theory is that it just doesn't have a big impact so
it would be hard to notice.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-10-12 11:51:20 +02:00
..
2014-09-18 10:54:36 +02:00
2015-03-04 00:23:23 -05:00
2015-06-28 16:55:44 -07:00
2016-09-27 21:15:21 -04:00
2015-11-18 16:17:38 -05:00
2016-06-27 15:06:17 -04:00
2016-07-08 12:20:57 +02:00
2016-04-25 16:44:27 -04:00
2016-04-25 16:44:27 -04:00
2016-06-09 23:41:03 -07:00
2015-03-06 21:50:02 -05:00
2016-08-26 11:55:18 -07:00
2015-09-17 17:18:37 -07:00
2016-09-23 08:38:50 -04:00
2016-02-16 20:21:48 -05:00
2017-06-07 12:07:46 +02:00
2013-11-07 19:28:58 -05:00
2016-06-08 11:36:02 -07:00
2016-05-20 18:03:16 -04:00
2016-04-27 22:48:25 -04:00
2016-10-14 10:59:15 -04:00
2016-05-20 18:03:17 -04:00
2017-08-30 10:21:40 +02:00
2016-08-17 19:36:23 -04:00
2014-01-03 20:56:48 -05:00
2015-10-23 06:26:42 -07:00
2016-10-03 02:00:22 -04:00
2016-10-04 02:11:51 -04:00
2016-06-15 20:41:23 -07:00
2016-05-16 13:46:23 -04:00
2016-07-08 12:20:57 +02:00
2016-03-23 22:09:58 -04:00
2016-04-07 16:53:30 -04:00
2016-09-10 23:12:53 -07:00
2014-06-02 11:00:41 -07:00
2016-11-03 16:16:50 -04:00
2015-03-12 22:58:12 -04:00
2016-05-03 16:08:14 -04:00
2015-10-26 22:24:22 -07:00
2017-07-21 07:42:18 +02:00