From 35e57ba6a0789e90cd75fed42b242b701b9607e9 Mon Sep 17 00:00:00 2001
From: Gergo Koteles <soyer@irl.hu>
Date: Tue, 8 Jul 2025 00:05:55 +0200
Subject: [PATCH] mididevice: add length check for performance sysex

---
 src/mididevice.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/mididevice.cpp b/src/mididevice.cpp
index f1036c9..d07d216 100644
--- a/src/mididevice.cpp
+++ b/src/mididevice.cpp
@@ -339,7 +339,7 @@ void CMIDIDevice::MIDIMessageHandler (const u8 *pMessage, size_t nLength, unsign
 
 					// Check for TX216/TX816 style performance sysex messages
 					
-					if (pMessage[3] == 0x04)
+					if (nLength == 7 && pMessage[3] == 0x04)
 					{
 						// TX816/TX216 Performance SysEx message
 						uint8_t mTG = pMessage[2] & 0x0F; // mTG = module/tone generator number (0-7)