diff --git a/net/bluetooth/l2cap_sock.c b/net/bluetooth/l2cap_sock.c
index 507b80d59dec..67a8642f57ea 100644
--- a/net/bluetooth/l2cap_sock.c
+++ b/net/bluetooth/l2cap_sock.c
@@ -87,7 +87,8 @@ static int l2cap_sock_bind(struct socket *sock, struct sockaddr *addr, int alen)
 
 	BT_DBG("sk %p", sk);
 
-	if (!addr || addr->sa_family != AF_BLUETOOTH)
+	if (!addr || alen < offsetofend(struct sockaddr, sa_family) ||
+	    addr->sa_family != AF_BLUETOOTH)
 		return -EINVAL;
 
 	memset(&la, 0, sizeof(la));
@@ -181,7 +182,7 @@ static int l2cap_sock_connect(struct socket *sock, struct sockaddr *addr,
 
 	BT_DBG("sk %p", sk);
 
-	if (!addr || alen < sizeof(addr->sa_family) ||
+	if (!addr || alen < offsetofend(struct sockaddr, sa_family) ||
 	    addr->sa_family != AF_BLUETOOTH)
 		return -EINVAL;
 
diff --git a/net/bluetooth/rfcomm/sock.c b/net/bluetooth/rfcomm/sock.c
index ac3c650cb234..2025b45a8bf8 100644
--- a/net/bluetooth/rfcomm/sock.c
+++ b/net/bluetooth/rfcomm/sock.c
@@ -339,7 +339,8 @@ static int rfcomm_sock_bind(struct socket *sock, struct sockaddr *addr, int addr
 	struct sock *sk = sock->sk;
 	int len, err = 0;
 
-	if (!addr || addr->sa_family != AF_BLUETOOTH)
+	if (!addr || addr_len < offsetofend(struct sockaddr, sa_family) ||
+	    addr->sa_family != AF_BLUETOOTH)
 		return -EINVAL;
 
 	memset(&sa, 0, sizeof(sa));
diff --git a/net/bluetooth/sco.c b/net/bluetooth/sco.c
index 728e0c8dc8e7..795e920a3281 100644
--- a/net/bluetooth/sco.c
+++ b/net/bluetooth/sco.c
@@ -524,10 +524,8 @@ static int sco_sock_bind(struct socket *sock, struct sockaddr *addr,
 
 	BT_DBG("sk %p %pMR", sk, &sa->sco_bdaddr);
 
-	if (!addr || addr->sa_family != AF_BLUETOOTH)
-		return -EINVAL;
-
-	if (addr_len < sizeof(struct sockaddr_sco))
+	if (!addr || addr_len < sizeof(struct sockaddr_sco) ||
+	    addr->sa_family != AF_BLUETOOTH)
 		return -EINVAL;
 
 	lock_sock(sk);