diff --git a/drivers/input/misc/uinput.c b/drivers/input/misc/uinput.c
index 1b4ee4a..e74ed9c 100644
--- a/drivers/input/misc/uinput.c
+++ b/drivers/input/misc/uinput.c
@@ -476,6 +476,9 @@
 	struct input_event event;
 	int retval = 0;
 
+	if (count != 0 && count < input_event_size())
+		return -EINVAL;
+
 	if (udev->state != UIST_CREATED)
 		return -ENODEV;