From 0e7632d113e5e7793c1ef2798fdfef21e52b6d82 Mon Sep 17 00:00:00 2001
From: Jianhui Zhao <zhaojh329@gmail.com>
Date: Tue, 12 Oct 2021 06:12:55 +0000
Subject: [PATCH] perf: verify message length for msgTypeRegister

Signed-off-by: Jianhui Zhao <zhaojh329@gmail.com>
---
 device.go | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/device.go b/device.go
index ec6ccd1..6698d9b 100644
--- a/device.go
+++ b/device.go
@@ -227,6 +227,11 @@ func (dev *device) readLoop() {
 
 		switch typ {
 		case msgTypeRegister:
+			if msgLen < 2 {
+				log.Error().Msg("msgTypeRegister: invalid")
+				return
+			}
+
 			if !parseDeviceInfo(dev, b) {
 				return
 			}