diff --git a/net/ipv4/netfilter/arp_tables.c b/net/ipv4/netfilter/arp_tables.c
index 2909c92..da85e92 100644
--- a/net/ipv4/netfilter/arp_tables.c
+++ b/net/ipv4/netfilter/arp_tables.c
@@ -816,6 +816,7 @@ static int do_replace(void __user *user, unsigned int len)
 		return -ENOMEM;
 	if (tmp.num_counters >= INT_MAX / sizeof(struct xt_counters))
 		return -ENOMEM;
+	tmp.name[sizeof(tmp.name)-1] = 0;
 
 	newinfo = xt_alloc_table_info(tmp.size);
 	if (!newinfo)
@@ -930,6 +931,7 @@ static int do_add_counters(void __user *user, unsigned int len)
 	paddc = vmalloc(len);
 	if (!paddc)
 		return -ENOMEM;
+	tmp.name[sizeof(tmp.name)-1] = 0;
 
 	if (copy_from_user(paddc, user, len) != 0) {
 		ret = -EFAULT;
@@ -1070,6 +1072,7 @@ static int do_arpt_get_ctl(struct sock *sk, int cmd, void __user *user, int *len
 			ret = -EFAULT;
 			break;
 		}
+		rev.name[sizeof(rev.name)-1] = 0;
 
 		try_then_request_module(xt_find_revision(NF_ARP, rev.name,
 							 rev.revision, 1, &ret),