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From 81044c64b9ed9a10ae82a28bac753060bdfdac74 Mon Sep 17 00:00:00 2001
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From: Albert Astals Cid <aacid@kde.org>
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Date: Tue, 15 Mar 2022 15:14:32 +0100
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Subject: Hints::readTables: bail out if we run out of file when reading
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Fixes #1230
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diff --git a/poppler/Hints.cc b/poppler/Hints.cc
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index 79f04088..4707e1c6 100644
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--- a/poppler/Hints.cc
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+++ b/poppler/Hints.cc
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@@ -5,7 +5,7 @@
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// This file is licensed under the GPLv2 or later
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//
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// Copyright 2010, 2012 Hib Eris <hib@hiberis.nl>
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-// Copyright 2010, 2011, 2013, 2014, 2016-2019 Albert Astals Cid <aacid@kde.org>
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+// Copyright 2010, 2011, 2013, 2014, 2016-2019, 2021, 2022 Albert Astals Cid <aacid@kde.org>
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// Copyright 2010, 2013 Pino Toscano <pino@kde.org>
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// Copyright 2013 Adrian Johnson <ajohnson@redneon.com>
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// Copyright 2014 Fabio D'Urso <fabiodurso@hotmail.it>
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@@ -189,21 +189,31 @@ void Hints::readTables(BaseStream *str, Linearization *linearization, XRef *xref
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char *p = &buf[0];
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if (hintsOffset && hintsLength) {
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- Stream *s = str->makeSubStream(hintsOffset, false, hintsLength, Object(objNull));
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+ std::unique_ptr<Stream> s(str->makeSubStream(hintsOffset, false, hintsLength, Object(objNull)));
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s->reset();
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for (unsigned int i = 0; i < hintsLength; i++) {
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- *p++ = s->getChar();
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+ const int c = s->getChar();
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+ if (unlikely(c == EOF)) {
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+ error(errSyntaxWarning, -1, "Found EOF while reading hints");
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+ ok = false;
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+ return;
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+ }
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+ *p++ = c;
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}
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- delete s;
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}
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if (hintsOffset2 && hintsLength2) {
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- Stream *s = str->makeSubStream(hintsOffset2, false, hintsLength2, Object(objNull));
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+ std::unique_ptr<Stream> s(str->makeSubStream(hintsOffset2, false, hintsLength2, Object(objNull)));
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s->reset();
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for (unsigned int i = 0; i < hintsLength2; i++) {
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- *p++ = s->getChar();
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+ const int c = s->getChar();
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+ if (unlikely(c == EOF)) {
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+ error(errSyntaxWarning, -1, "Found EOF while reading hints2");
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+ ok = false;
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+ return;
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+ }
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+ *p++ = c;
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}
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- delete s;
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}
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MemStream *memStream = new MemStream(&buf[0], 0, bufLength, Object(objNull));
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