fix buffer overflow in interface data handling

[project/netifd.git] / interface.c

diff --git a/interface.c b/interface.c
index e43791c..78dcd83 100644 (file)
--- a/interface.c
+++ b/interface.c
@@ -1,3 +1,16 @@
+/*
+ * netifd - network interface daemon
+ * Copyright (C) 2012 Felix Fietkau <nbd@openwrt.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
 #include <string.h>
 #include <stdlib.h>
 #include <stdio.h>
@@ -105,7 +118,7 @@ interface_add_data(struct interface *iface, const struct blob_attr *data)
        if (!blobmsg_check_attr(data, true))
                return UBUS_STATUS_INVALID_ARGUMENT;
 
-       n = calloc(1, sizeof(*data) + blob_pad_len(data));
+       n = calloc(1, sizeof(*n) + blob_pad_len(data));
        memcpy(n->data, data, blob_pad_len(data));
        n->node.key = blobmsg_name(data);