From 67bc722c663e86e34a6f5e51e94f65d9b23eb415 Mon Sep 17 00:00:00 2001
From: feyris-tan <4116042+feyris-tan@users.noreply.github.com>
Date: Sat, 16 May 2026 20:50:44 +0200
Subject: [PATCH] Fixed a crash in the PSI decoder when a packet with an
 invalid PSI offset is received.

---
 skyscraper8/Mpeg2/PsiDecoder.cs | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/skyscraper8/Mpeg2/PsiDecoder.cs b/skyscraper8/Mpeg2/PsiDecoder.cs
index 55760cd..64762c8 100644
--- a/skyscraper8/Mpeg2/PsiDecoder.cs
+++ b/skyscraper8/Mpeg2/PsiDecoder.cs
@@ -28,10 +28,7 @@ namespace skyscraper5.Mpeg2
         {
 			Span<byte> span = packet.GetPayload();
             int automataIterations = 0;
-
-            if (packet.PID == 0x0881)
-                ;
-
+            
             while(span.Length > 0)
             {
                 switch(state)
@@ -45,6 +42,12 @@ namespace skyscraper5.Mpeg2
                         }
                         byte startOffset = span[0];
                         span = span.Slice(1);
+                        if (startOffset > span.Length)
+                        {
+	                        logger.WarnFormat("An MPEG-2 section with an invalid starting offsett was found. It will be skipped.");
+	                        state = 0;
+	                        return;
+                        }
                         span = span.Slice(startOffset);
                         state = 1;
                         break;