diff --git a/arch/um/drivers/vector_kern.c b/arch/um/drivers/vector_kern.c
index cde6db184c26..45a4bcd27a39 100644
--- a/arch/um/drivers/vector_kern.c
+++ b/arch/um/drivers/vector_kern.c
@@ -770,6 +770,7 @@ static int vector_config(char *str, char **error_out)
 
 	if (parsed == NULL) {
 		*error_out = "vector_config failed to parse parameters";
+		kfree(params);
 		return -EINVAL;
 	}