1 files changed, 7 insertions, 1 deletions

diff --git a/net/netfilter/xt_cluster.c b/net/netfilter/xt_cluster.c
index 6c4847662b85..69a639f35403 100644
--- a/net/netfilter/xt_cluster.c
+++ b/net/netfilter/xt_cluster.c
@@ -135,7 +135,13 @@ static bool xt_cluster_mt_checkentry(const struct xt_mtchk_param *par)
 {
         struct xt_cluster_match_info *info = par->matchinfo;
 
-        if (info->node_mask >= (1 << info->total_nodes)) {
+        if (info->total_nodes > XT_CLUSTER_NODES_MAX) {
+                printk(KERN_ERR "xt_cluster: you have exceeded the maximum "
+                                "number of cluster nodes (%u > %u)\n",
+                                info->total_nodes, XT_CLUSTER_NODES_MAX);
+                return false;
+        }
+        if (info->node_mask >= (1ULL << info->total_nodes)) {
                 printk(KERN_ERR "xt_cluster: this node mask cannot be "
                                 "higher than the total number of nodes\n");
                 return false;