From b8d57eb2f414876510ffffa88105a9d4f350f575 Mon Sep 17 00:00:00 2001
From: Al Viro <viro@zeniv.linux.org.uk>
Date: Fri, 19 Dec 2014 06:20:59 +0000
Subject: [PATCH] Bluetooth: bnep: bnep_add_connection() should verify that
 it's dealing with l2cap socket

commit 71bb99a02b32b4cc4265118e85f6035ca72923f0 upstream.

same story as cmtp

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Willy Tarreau <w@1wt.eu>
---
 net/bluetooth/bnep/core.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/net/bluetooth/bnep/core.c b/net/bluetooth/bnep/core.c
index e430b1abcd2..e387e6719fa 100644
--- a/net/bluetooth/bnep/core.c
+++ b/net/bluetooth/bnep/core.c
@@ -32,6 +32,7 @@
 #include <asm/unaligned.h>
 
 #include <net/bluetooth/bluetooth.h>
+#include <net/bluetooth/l2cap.h>
 #include <net/bluetooth/hci_core.h>
 
 #include "bnep.h"
@@ -539,6 +540,9 @@ int bnep_add_connection(struct bnep_connadd_req *req, struct socket *sock)
 
 	BT_DBG("");
 
+	if (!l2cap_is_socket(sock))
+		return -EBADFD;
+
 	baswap((void *) dst, &bt_sk(sock->sk)->dst);
 	baswap((void *) src, &bt_sk(sock->sk)->src);