[PATCH 3.16 21/25] appletalk: enforce CAP_NET_RAW for raw sockets

[Ben Hutchings]

3.16.77-rc1 review patch.  If anyone has any objections, please let me know.

------------------

From: Ori Nimron <orinimron123@xxxxxxxxx>

commit 6cc03e8aa36c51f3b26a0d21a3c4ce2809c842ac upstream.

When creating a raw AF_APPLETALK socket, CAP_NET_RAW needs to be checked
first.

Signed-off-by: Ori Nimron <orinimron123@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Ben Hutchings <ben@xxxxxxxxxxxxxxx>
---
 net/appletalk/ddp.c | 5 +++++
 1 file changed, 5 insertions(+)

--- a/net/appletalk/ddp.c
+++ b/net/appletalk/ddp.c
@@ -1029,6 +1029,11 @@ static int atalk_create(struct net *net,
 	 */
 	if (sock->type != SOCK_RAW && sock->type != SOCK_DGRAM)
 		goto out;
+
+	rc = -EPERM;
+	if (sock->type == SOCK_RAW && !kern && !capable(CAP_NET_RAW))
+		goto out;
+
 	rc = -ENOMEM;
 	sk = sk_alloc(net, PF_APPLETALK, GFP_KERNEL, &ddp_proto);
 	if (!sk)