diff --git a/net/mpls/af_mpls.c b/net/mpls/af_mpls.c
index 3e8d1f6ac907..ffab94d61e1d 100644
--- a/net/mpls/af_mpls.c
+++ b/net/mpls/af_mpls.c
@@ -7,6 +7,7 @@
 #include <linux/if_arp.h>
 #include <linux/ipv6.h>
 #include <linux/mpls.h>
+#include <linux/nospec.h>
 #include <linux/vmalloc.h>
 #include <net/ip.h>
 #include <net/dst.h>
@@ -756,17 +757,20 @@ errout:
 	return err;
 }
 
-static bool mpls_label_ok(struct net *net, unsigned int index)
+static bool mpls_label_ok(struct net *net, unsigned int *index)
 {
+	bool is_ok = true;
+
 	/* Reserved labels may not be set */
-	if (index < MPLS_LABEL_FIRST_UNRESERVED)
-		return false;
+	if (*index < MPLS_LABEL_FIRST_UNRESERVED)
+		is_ok = false;
 
 	/* The full 20 bit range may not be supported. */
-	if (index >= net->mpls.platform_labels)
-		return false;
+	if (is_ok && *index >= net->mpls.platform_labels)
+		is_ok = false;
 
-	return true;
+	*index = array_index_nospec(*index, net->mpls.platform_labels);
+	return is_ok;
 }
 
 static int mpls_route_add(struct mpls_route_config *cfg)
@@ -787,7 +791,7 @@ static int mpls_route_add(struct mpls_route_config *cfg)
 		index = find_free_label(net);
 	}
 
-	if (!mpls_label_ok(net, index))
+	if (!mpls_label_ok(net, &index))
 		goto errout;
 
 	/* Append makes no sense with mpls */
@@ -848,7 +852,7 @@ static int mpls_route_del(struct mpls_route_config *cfg)
 
 	index = cfg->rc_label;
 
-	if (!mpls_label_ok(net, index))
+	if (!mpls_label_ok(net, &index))
 		goto errout;
 
 	mpls_route_update(net, index, NULL, &cfg->rc_nlinfo);
@@ -1283,7 +1287,7 @@ static int rtm_to_route_config(struct sk_buff *skb,  struct nlmsghdr *nlh,
 				goto errout;
 
 			if (!mpls_label_ok(cfg->rc_nlinfo.nl_net,
-					   cfg->rc_label))
+					   &cfg->rc_label))
 				goto errout;
 			break;
 		}