From 3ea25a82805137025516375b8fdc005a8a951b18 Mon Sep 17 00:00:00 2001
From: Lode <lvandeve@gmail.com>
Date: Tue, 29 Mar 2016 22:43:49 +0200
Subject: ignore invalid data past IEND in chunk util

---
 lodepng_util.cpp | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/lodepng_util.cpp b/lodepng_util.cpp
index 8c4def1..76efdea 100644
--- a/lodepng_util.cpp
+++ b/lodepng_util.cpp
@@ -95,8 +95,13 @@ unsigned getChunks(std::vector<std::string> names[3],
     {
       location = 2;
     }
-    else if(name != "IEND")
+    else if(name == "IEND")
+    {
+      break; // anything after IEND is not part of the PNG or the 3 groups here.
+    }
+    else
     {
+      if(next > end) return 1; // invalid chunk, content too far
       names[location].push_back(name);
       chunks[location].push_back(std::vector<unsigned char>(chunk, next));
     }
-- 
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