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35 lines
1 KiB
Diff
35 lines
1 KiB
Diff
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Fix CVE-2017-9776:
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https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-9776
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https://bugs.freedesktop.org/show_bug.cgi?id=101541
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Patch copied from upstream source repository:
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https://cgit.freedesktop.org/poppler/poppler/commit/?id=a3a98a6d83dfbf49f565f5aa2d7c07153a7f62fc
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From 55db66c69fd56826b8523710046deab1a8d14ba2 Mon Sep 17 00:00:00 2001
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From: Albert Astals Cid <aacid@kde.org>
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Date: Wed, 21 Jun 2017 00:55:20 +0200
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Subject: [PATCH] Fix crash in malformed documents
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---
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poppler/JBIG2Stream.cc | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/poppler/JBIG2Stream.cc b/poppler/JBIG2Stream.cc
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index 48535883..d89108c8 100644
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--- a/poppler/JBIG2Stream.cc
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+++ b/poppler/JBIG2Stream.cc
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@@ -896,7 +896,7 @@ void JBIG2Bitmap::combine(JBIG2Bitmap *bitmap, int x, int y,
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oneByte = x0 == ((x1 - 1) & ~7);
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for (yy = y0; yy < y1; ++yy) {
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- if (unlikely(y + yy) >= h)
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+ if (unlikely((y + yy >= h) || (y + yy < 0)))
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continue;
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// one byte per line -- need to mask both left and right side
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--
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2.13.2
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