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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 2/2] 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 bdd0d32..6c2fc25 100644
--- a/poppler/Hints.cc
+++ b/poppler/Hints.cc
@@ -5,7 +5,7 @@
// This file is licensed under the GPLv2 or later
//
// Copyright 2010, 2012 Hib Eris <hib@hiberis.nl>
-// Copyright 2010, 2011, 2013, 2014 Albert Astals Cid <aacid@kde.org>
+// Copyright 2010, 2011, 2013, 2014, 2016 Albert Astals Cid <aacid@kde.org>
// Copyright 2010, 2013 Pino Toscano <pino@kde.org>
// Copyright 2013 Adrian Johnson <ajohnson@redneon.com>
// Copyright 2014 Fabio D'Urso <fabiodurso@hotmail.it>
@@ -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);
--
2.9.1
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