econet: disallow NULL remote addr for sendmsg(), fixes CVE-2010-3849

[firefly-linux-kernel-4.4.55.git] / net / phonet / socket.c

diff --git a/net/phonet/socket.c b/net/phonet/socket.c
index 07aa9f08d5fbdd0a66eb4713103b2f687089a8ea..aa5b5a972bff7a3e40700b8969e3b145bca428eb 100644 (file)
--- a/net/phonet/socket.c
+++ b/net/phonet/socket.c
@@ -407,7 +407,6 @@ int pn_sock_get_port(struct sock *sk, unsigned short sport)
        return -EADDRINUSE;
 
 found:
-       mutex_unlock(&port_mutex);
        pn->sobject = pn_object(pn_addr(pn->sobject), sport);
        return 0;
 }