From 0139ec0a75d14564f3970b9727f706a2f875e4d2 Mon Sep 17 00:00:00 2001
From: niksedk <nikolaj.olsson@visma.com>
Date: Tue, 16 Apr 2024 13:09:27 +0200
Subject: [PATCH] More teletext reading validation - thx yellobyte :) Work on
 #8186

---
 src/libse/ContainerFormats/TransportStream/DvbSubPes.cs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/libse/ContainerFormats/TransportStream/DvbSubPes.cs b/src/libse/ContainerFormats/TransportStream/DvbSubPes.cs
index fb928d896..d63607c8a 100644
--- a/src/libse/ContainerFormats/TransportStream/DvbSubPes.cs
+++ b/src/libse/ContainerFormats/TransportStream/DvbSubPes.cs
@@ -174,7 +174,7 @@ namespace Nikse.SubtitleEdit.Core.ContainerFormats.TransportStream
                 var dataUnitLen = _dataBuffer[i++];
                 if (dataUnitId == (int)Teletext.DataUnitT.DataUnitEbuTeletextNonSubtitle || dataUnitId == (int)Teletext.DataUnitT.DataUnitEbuTeletextSubtitle)
                 {
-                    if (dataUnitLen == 44) // teletext payload has always size 44 bytes
+                    if (dataUnitLen == 44 && _dataBuffer.Length > i + 43) // teletext payload has always size 44 bytes
                     {
                         Teletext.ProcessTelxPacket((Teletext.DataUnitT)dataUnitId, new Teletext.TeletextPacketPayload(_dataBuffer, i), timestamp, teletextRunSettings, pageNumberBcd, pageNumber);
                     }