diff --git a/drivers/infiniband/hw/mlx5/fs.c b/drivers/infiniband/hw/mlx5/fs.c
index e63fdb4bc3e3..bc2c15c7172b 100644
--- a/drivers/infiniband/hw/mlx5/fs.c
+++ b/drivers/infiniband/hw/mlx5/fs.c
@@ -3014,6 +3014,9 @@ static int UVERBS_HANDLER(MLX5_IB_METHOD_STEERING_ANCHOR_CREATE)(
 	if (err)
 		return err;
 
+	if (priority > MLX5_IB_FLOW_LAST_PRIO)
+		return -EINVAL;
+
 	obj = kzalloc_obj(*obj);
 	if (!obj)
 		return -ENOMEM;