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From 89a5367d49b2556a2635dbb6d48d6a6b182a2c6c Mon Sep 17 00:00:00 2001
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From: Albert Astals Cid <aacid@kde.org>
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Date: Thu, 23 May 2019 00:54:29 +0200
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Subject: [PATCH] JPEG2000Stream: fail gracefully if not all components have
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the same WxH
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I think this is just a mistake, or at least the only file we have with
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this scenario is a fuzzed one
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---
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poppler/JPEG2000Stream.cc | 8 +++++++-
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1 file changed, 7 insertions(+), 1 deletion(-)
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diff --git a/poppler/JPEG2000Stream.cc b/poppler/JPEG2000Stream.cc
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index 15bbcae4..0eea3a2d 100644
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--- a/poppler/JPEG2000Stream.cc
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+++ b/poppler/JPEG2000Stream.cc
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@@ -4,7 +4,7 @@
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//
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// A JPX stream decoder using OpenJPEG
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//
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-// Copyright 2008-2010, 2012, 2017, 2018 Albert Astals Cid <aacid@kde.org>
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+// Copyright 2008-2010, 2012, 2017-2019 Albert Astals Cid <aacid@kde.org>
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// Copyright 2011 Daniel Glöckner <daniel-gl@gmx.net>
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// Copyright 2014, 2016 Thomas Freitag <Thomas.Freitag@alfa.de>
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// Copyright 2013, 2014 Adrian Johnson <ajohnson@redneon.com>
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@@ -253,6 +253,12 @@ void JPXStream::init()
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close();
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break;
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}
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+ const int componentPixels = priv->image->comps[component].w * priv->image->comps[component].h;
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+ if (componentPixels != priv->npixels) {
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+ error(errSyntaxWarning, -1, "Component {0:d} has different WxH than component 0", component);
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+ close();
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+ break;
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+ }
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unsigned char *cdata = (unsigned char *)priv->image->comps[component].data;
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int adjust = 0;
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int depth = priv->image->comps[component].prec;
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--
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2.21.0
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