diff --git a/net/bridge/netfilter/ebtables.c b/net/bridge/netfilter/ebtables.c
index bab14186f9ad..14a06d8b1a2d 100644
--- a/net/bridge/netfilter/ebtables.c
+++ b/net/bridge/netfilter/ebtables.c
@@ -1070,6 +1070,8 @@ static int do_replace(struct net *net, sockptr_t arg, unsigned int len)
 	struct ebt_table_info *newinfo;
 	struct ebt_replace tmp;
 
+	if (len < sizeof(tmp))
+		return -EINVAL;
 	if (copy_from_sockptr(&tmp, arg, sizeof(tmp)) != 0)
 		return -EFAULT;
 
@@ -1309,6 +1311,8 @@ static int update_counters(struct net *net, sockptr_t arg, unsigned int len)
 {
 	struct ebt_replace hlp;
 
+	if (len < sizeof(hlp))
+		return -EINVAL;
 	if (copy_from_sockptr(&hlp, arg, sizeof(hlp)))
 		return -EFAULT;
 
@@ -2238,6 +2242,8 @@ static int compat_update_counters(struct net *net, sockptr_t arg,
 {
 	struct compat_ebt_replace hlp;
 
+	if (len < sizeof(hlp))
+		return -EINVAL;
 	if (copy_from_sockptr(&hlp, arg, sizeof(hlp)))
 		return -EFAULT;
 
diff --git a/net/ipv4/netfilter/arp_tables.c b/net/ipv4/netfilter/arp_tables.c
index d6d45d820d79..48c6aa3d91ae 100644
--- a/net/ipv4/netfilter/arp_tables.c
+++ b/net/ipv4/netfilter/arp_tables.c
@@ -955,6 +955,8 @@ static int do_replace(struct net *net, sockptr_t arg, unsigned int len)
 	void *loc_cpu_entry;
 	struct arpt_entry *iter;
 
+	if (len < sizeof(tmp))
+		return -EINVAL;
 	if (copy_from_sockptr(&tmp, arg, sizeof(tmp)) != 0)
 		return -EFAULT;
 
@@ -1253,6 +1255,8 @@ static int compat_do_replace(struct net *net, sockptr_t arg, unsigned int len)
 	void *loc_cpu_entry;
 	struct arpt_entry *iter;
 
+	if (len < sizeof(tmp))
+		return -EINVAL;
 	if (copy_from_sockptr(&tmp, arg, sizeof(tmp)) != 0)
 		return -EFAULT;
 
diff --git a/net/ipv4/netfilter/ip_tables.c b/net/ipv4/netfilter/ip_tables.c
index ec981618b7b2..b46d58b9f3fe 100644
--- a/net/ipv4/netfilter/ip_tables.c
+++ b/net/ipv4/netfilter/ip_tables.c
@@ -1109,6 +1109,8 @@ do_replace(struct net *net, sockptr_t arg, unsigned int len)
 	void *loc_cpu_entry;
 	struct ipt_entry *iter;
 
+	if (len < sizeof(tmp))
+		return -EINVAL;
 	if (copy_from_sockptr(&tmp, arg, sizeof(tmp)) != 0)
 		return -EFAULT;
 
@@ -1493,6 +1495,8 @@ compat_do_replace(struct net *net, sockptr_t arg, unsigned int len)
 	void *loc_cpu_entry;
 	struct ipt_entry *iter;
 
+	if (len < sizeof(tmp))
+		return -EINVAL;
 	if (copy_from_sockptr(&tmp, arg, sizeof(tmp)) != 0)
 		return -EFAULT;
 
diff --git a/net/ipv6/netfilter/ip6_tables.c b/net/ipv6/netfilter/ip6_tables.c
index 99bb11d16712..d013395be05f 100644
--- a/net/ipv6/netfilter/ip6_tables.c
+++ b/net/ipv6/netfilter/ip6_tables.c
@@ -1127,6 +1127,8 @@ do_replace(struct net *net, sockptr_t arg, unsigned int len)
 	void *loc_cpu_entry;
 	struct ip6t_entry *iter;
 
+	if (len < sizeof(tmp))
+		return -EINVAL;
 	if (copy_from_sockptr(&tmp, arg, sizeof(tmp)) != 0)
 		return -EFAULT;
 
@@ -1503,6 +1505,8 @@ compat_do_replace(struct net *net, sockptr_t arg, unsigned int len)
 	void *loc_cpu_entry;
 	struct ip6t_entry *iter;
 
+	if (len < sizeof(tmp))
+		return -EINVAL;
 	if (copy_from_sockptr(&tmp, arg, sizeof(tmp)) != 0)
 		return -EFAULT;