From 3de6274c830e3d2a5ca5e0ab08cdb270583d4d64 Mon Sep 17 00:00:00 2001
From: Dave Schukin <daveschukin@gmail.com>
Date: Fri, 1 Mar 2019 01:54:07 -0800
Subject: [PATCH] Fix for crasher caused by out of bounds index

---
 LTSupportAutomotive/LTOBD2ProtocolISO15765_4.m | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/LTSupportAutomotive/LTOBD2ProtocolISO15765_4.m b/LTSupportAutomotive/LTOBD2ProtocolISO15765_4.m
index bc57c1e..8d32b34 100644
--- a/LTSupportAutomotive/LTOBD2ProtocolISO15765_4.m
+++ b/LTSupportAutomotive/LTOBD2ProtocolISO15765_4.m
@@ -121,6 +121,11 @@ -(instancetype)initWithNumberOfBitsInHeader:(NSUInteger)numberOfBitsInHeader
         NSUInteger originalCommandCorrective = ( isSingleFrame || isFirstFrameOfMultiple ) ? numberOfBytesInCommand : 0;
 
         NSUInteger payloadIndex = headerLength + originalCommandCorrective + multiFrameCorrective;
+        
+        if (payloadIndex >= bytesInLine.count) {
+            continue;
+        }
+        
         NSUInteger payloadLength = bytesInLine.count - payloadIndex;
         NSRange payloadRange = NSMakeRange(payloadIndex, payloadLength);
         NSArray<NSNumber*>* payload = [bytesInLine subarrayWithRange:payloadRange];