net: check the length of the socket address passed to connect(2)

check the length of the socket address passed to connect(2).

Check the length of the socket address passed to connect(2). If the
length is invalid, -EINVAL will be returned.

Signed-off-by: Changli Gao <xiaosuo@gmail.com>
----
net/bluetooth/l2cap.c | 3 ++-
net/bluetooth/rfcomm/sock.c | 3 ++-
net/bluetooth/sco.c | 3 ++-
net/can/bcm.c | 3 +++
net/ieee802154/af_ieee802154.c | 3 +++
net/ipv4/af_inet.c | 5 +++++
net/netlink/af_netlink.c | 3 +++
7 files changed, 20 insertions(+), 3 deletions(-)
Signed-off-by: David S. Miller <davem@davemloft.net>

net/ieee802154/af_ieee802154.c

@@ -126,6 +126,9 @@ static int ieee802154_sock_connect(struct socket *sock, struct sockaddr *uaddr,
 {
 	struct sock *sk = sock->sk;
 
+	if (addr_len < sizeof(uaddr->sa_family))
+		return -EINVAL;
+
 	if (uaddr->sa_family == AF_UNSPEC)
 		return sk->sk_prot->disconnect(sk, flags);