af_iucv: Validate socket address length in iucv_sock_bind()
authorUrsula Braun <ursula.braun@de.ibm.com>
Tue, 19 Jan 2016 09:41:33 +0000 (10:41 +0100)
committerDavid S. Miller <davem@davemloft.net>
Tue, 19 Jan 2016 19:21:08 +0000 (14:21 -0500)
Signed-off-by: Ursula Braun <ursula.braun@de.ibm.com>
Reported-by: Dmitry Vyukov <dvyukov@google.com>
Reviewed-by: Evgeny Cherkashin <Eugene.Crosser@ru.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
net/iucv/af_iucv.c

index ef50a94..fc3598a 100644 (file)
@@ -708,6 +708,9 @@ static int iucv_sock_bind(struct socket *sock, struct sockaddr *addr,
        if (!addr || addr->sa_family != AF_IUCV)
                return -EINVAL;
 
+       if (addr_len < sizeof(struct sockaddr_iucv))
+               return -EINVAL;
+
        lock_sock(sk);
        if (sk->sk_state != IUCV_OPEN) {
                err = -EBADFD;