diff --git a/net/core/neighbour.c b/net/core/neighbour.c
index b963d6b02c4f9..2d5bc3a75faec 100644
--- a/net/core/neighbour.c
+++ b/net/core/neighbour.c
@@ -2528,6 +2528,13 @@ static bool neigh_master_filtered(struct net_device *dev, int master_idx)
 		return false;
 
 	master = dev ? netdev_master_upper_dev_get(dev) : NULL;
+
+	/* 0 is already used to denote NDA_MASTER wasn't passed, therefore need another
+	 * invalid value for ifindex to denote "no master".
+	 */
+	if (master_idx == -1)
+		return !!master;
+
 	if (!master || master->ifindex != master_idx)
 		return true;
 
diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index 7c9d32cfe607e..2dcf1c084b202 100644
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -1959,6 +1959,13 @@ static bool link_master_filtered(struct net_device *dev, int master_idx)
 		return false;
 
 	master = netdev_master_upper_dev_get(dev);
+
+	/* 0 is already used to denote IFLA_MASTER wasn't passed, therefore need
+	 * another invalid value for ifindex to denote "no master".
+	 */
+	if (master_idx == -1)
+		return !!master;
+
 	if (!master || master->ifindex != master_idx)
 		return true;