From ffea12e7055ba95b4b907cc140785cfb1c420c64 Mon Sep 17 00:00:00 2001
From: Gilles Boccon-Gibod <bok@bok.net>
Date: Sun, 27 Feb 2022 19:11:11 -0800
Subject: [PATCH] fix #434

---
 Source/C++/Core/Ap4DescriptorFactory.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Source/C++/Core/Ap4DescriptorFactory.cpp b/Source/C++/Core/Ap4DescriptorFactory.cpp
index 907277dd1..1db798624 100644
--- a/Source/C++/Core/Ap4DescriptorFactory.cpp
+++ b/Source/C++/Core/Ap4DescriptorFactory.cpp
@@ -127,6 +127,9 @@ AP4_DescriptorFactory::CreateDescriptorFromStream(AP4_ByteStream&  stream,
             descriptor = new AP4_UnknownDescriptor(stream, tag, header_size, payload_size);
             break;
         }
+    } else {
+        stream.Seek(offset);
+        return AP4_ERROR_INVALID_FORMAT;
     }
     
     // skip to the end of the descriptor