diff --git a/drivers/hid/hid-roccat-konepure.c b/drivers/hid/hid-roccat-konepure.c
index 7f753dfc2a10..529466c33bf8 100644
--- a/drivers/hid/hid-roccat-konepure.c
+++ b/drivers/hid/hid-roccat-konepure.c
@@ -181,6 +181,9 @@ static int konepure_raw_event(struct hid_device *hdev,
 			!= USB_INTERFACE_PROTOCOL_MOUSE)
 		return 0;
 
+	if (size < sizeof(struct konepure_mouse_report_button))
+		return 0;
+
 	if (data[0] != KONEPURE_MOUSE_REPORT_NUMBER_BUTTON)
 		return 0;