diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index 8c1d9e612436..6a227edf8a8a 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -175,7 +175,7 @@ static void rt6_uncached_list_flush_dev(struct net_device *dev)
 			struct net_device *rt_dev = rt->dst.dev;
 			bool handled = false;
 
-			if (rt_idev->dev == dev) {
+			if (rt_idev && rt_idev->dev == dev) {
 				rt->rt6i_idev = in6_dev_get(blackhole_netdev);
 				in6_dev_put(rt_idev);
 				handled = true;