File 0001-Check-for-XRefEntry-existing-before-using-it.patch of Package poppler.23804

From 3f5c84e17acfa71dfd44514384398f5a4c449630 Mon Sep 17 00:00:00 2001
From: Albert Astals Cid <aacid@kde.org>
Date: Sat, 30 Jul 2016 17:50:42 +0200
Subject: [PATCH] Check for XRefEntry existing before using it

Bug #97005
---
 poppler/Hints.cc | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/poppler/Hints.cc b/poppler/Hints.cc
index bdd0d322..6c2fc259 100644
--- a/poppler/Hints.cc
+++ b/poppler/Hints.cc
@@ -43,7 +43,13 @@ Hints::Hints(BaseStream *str, Linearization *linearization, XRef *xref, Security
       pageObjectFirst);
     pageObjectFirst = 0;
   }
-  pageOffsetFirst = xref->getEntry(pageObjectFirst)->offset;
+  XRefEntry *pageObjectFirstXRefEntry = xref->getEntry(pageObjectFirst);
+  if (!pageObjectFirstXRefEntry) {
+      error(errSyntaxWarning, -1, "No XRef entry for first page object");
+      pageOffsetFirst = 0;
+  } else {
+      pageOffsetFirst = pageObjectFirstXRefEntry->offset;
+  }
 
   if (nPages >= INT_MAX / (int)sizeof(Guint)) {
      error(errSyntaxWarning, -1, "Invalid number of pages ({0:d}) for hints table", nPages);
-- 
2.16.3