7 files changed, 20 insertions, 3 deletions

diff --git a/net/bluetooth/l2cap.c b/net/bluetooth/l2cap.c
index 7794a2e2adce..99d68c34e4f1 100644
--- a/net/bluetooth/l2cap.c
+++ b/net/bluetooth/l2cap.c
@@ -1002,7 +1002,8 @@ static int l2cap_sock_connect(struct socket *sock, struct sockaddr *addr, int al
 
         BT_DBG("sk %p", sk);
 
-        if (!addr || addr->sa_family != AF_BLUETOOTH)
+        if (!addr || alen < sizeof(addr->sa_family) ||
+            addr->sa_family != AF_BLUETOOTH)
                 return -EINVAL;
 
         memset(&la, 0, sizeof(la));
diff --git a/net/bluetooth/rfcomm/sock.c b/net/bluetooth/rfcomm/sock.c
index 7f439765403d..8ed3c37684fa 100644
--- a/net/bluetooth/rfcomm/sock.c
+++ b/net/bluetooth/rfcomm/sock.c
@@ -397,7 +397,8 @@ static int rfcomm_sock_connect(struct socket *sock, struct sockaddr *addr, int a
 
         BT_DBG("sk %p", sk);
 
-        if (addr->sa_family != AF_BLUETOOTH || alen < sizeof(struct sockaddr_rc))
+        if (alen < sizeof(struct sockaddr_rc) ||
+            addr->sa_family != AF_BLUETOOTH)
                 return -EINVAL;
 
         lock_sock(sk);
diff --git a/net/bluetooth/sco.c b/net/bluetooth/sco.c
index e5b16b76b22e..ca6b2ad1c3fc 100644
--- a/net/bluetooth/sco.c
+++ b/net/bluetooth/sco.c
@@ -499,7 +499,8 @@ static int sco_sock_connect(struct socket *sock, struct sockaddr *addr, int alen
 
         BT_DBG("sk %p", sk);
 
-        if (addr->sa_family != AF_BLUETOOTH || alen < sizeof(struct sockaddr_sco))
+        if (alen < sizeof(struct sockaddr_sco) ||
+            addr->sa_family != AF_BLUETOOTH)
                 return -EINVAL;
 
         if (sk->sk_state != BT_OPEN && sk->sk_state != BT_BOUND)
diff --git a/net/can/bcm.c b/net/can/bcm.c
index e32af52238a2..629ad1debe81 100644
--- a/net/can/bcm.c
+++ b/net/can/bcm.c
@@ -1478,6 +1478,9 @@ static int bcm_connect(struct socket *sock, struct sockaddr *uaddr, int len,
         struct sock *sk = sock->sk;
         struct bcm_sock *bo = bcm_sk(sk);
 
+        if (len < sizeof(*addr))
+                return -EINVAL;
+
         if (bo->bound)
                 return -EISCONN;
 
diff --git a/net/ieee802154/af_ieee802154.c b/net/ieee802154/af_ieee802154.c
index bad1c49fd960..01beb6c11205 100644
--- a/net/ieee802154/af_ieee802154.c
+++ b/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);
 
diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c
index 33b7dffa7732..a366861bf4cd 100644
--- a/net/ipv4/af_inet.c
+++ b/net/ipv4/af_inet.c
@@ -530,6 +530,8 @@ int inet_dgram_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);
 
@@ -573,6 +575,9 @@ int inet_stream_connect(struct socket *sock, struct sockaddr *uaddr,
         int err;
         long timeo;
 
+        if (addr_len < sizeof(uaddr->sa_family))
+                return -EINVAL;
+
         lock_sock(sk);
 
         if (uaddr->sa_family == AF_UNSPEC) {
diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c
index acbbae1e89b5..795424396aff 100644
--- a/net/netlink/af_netlink.c
+++ b/net/netlink/af_netlink.c
@@ -683,6 +683,9 @@ static int netlink_connect(struct socket *sock, struct sockaddr *addr,
         struct netlink_sock *nlk = nlk_sk(sk);
         struct sockaddr_nl *nladdr = (struct sockaddr_nl *)addr;
 
+        if (alen < sizeof(addr->sa_family))
+                return -EINVAL;
+
         if (addr->sa_family == AF_UNSPEC) {
                 sk->sk_state    = NETLINK_UNCONNECTED;
                 nlk->dst_pid    = 0;