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From 68ef84e5968a4249c2162b839ca6d7975048a557 Mon Sep 17 00:00:00 2001
From: Albert Astals Cid <aacid@kde.org>
Date: Mon, 15 Jul 2019 23:24:22 +0200
Subject: [PATCH] JPXStream::init: ignore dict Length if clearly broken

Fixes issue #805
---
 poppler/JPEG2000Stream.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/poppler/JPEG2000Stream.cc b/poppler/JPEG2000Stream.cc
index 0eea3a2d..8e6902f4 100644
--- a/poppler/JPEG2000Stream.cc
+++ b/poppler/JPEG2000Stream.cc
@@ -219,7 +219,7 @@ void JPXStream::init()
   if (getDict()) getDict()->lookup("Length", &oLen);
 
   int bufSize = BUFFER_INITIAL_SIZE;
-  if (oLen.isInt()) bufSize = oLen.getInt();
+  if (oLen.isInt() && oLen.getInt() > 0) bufSize = oLen.getInt();
   oLen.free();
 
   
-- 
2.21.0