From 55db66c69fd56826b8523710046deab1a8d14ba2 Mon Sep 17 00:00:00 2001

From: Albert Astals Cid <aacid@kde.org>

Date: Wed, 21 Jun 2017 00:55:20 +0200

Subject: [PATCH] Fix crash in malformed documents

---

 poppler/JBIG2Stream.cc | 2 +-

 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/poppler/JBIG2Stream.cc b/poppler/JBIG2Stream.cc

index 4853588..d89108c 100644

--- a/poppler/JBIG2Stream.cc

+++ b/poppler/JBIG2Stream.cc

@@ -868,6 +868,8 @@

   oneByte = x0 == ((x1 - 1) & ~7);

   for (yy = y0; yy < y1; ++yy) {

+    if (unlikely((y + yy >= h) || (y + yy < 0)))

+      continue;

     // one byte per line -- need to mask both left and right side

     if (oneByte) {