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https://git.in.rschanz.org/ryan77627/guix.git
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33 lines
903 B
Diff
33 lines
903 B
Diff
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Copied from Debian
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From 3206e0c752a62da1ae606867113ed3bf9bf73306 Mon Sep 17 00:00:00 2001
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From: erouault <erouault>
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Date: Sun, 21 Dec 2014 19:53:59 +0000
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Subject: [PATCH] * tools/thumbnail.c: fix out-of-buffer write
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http://bugzilla.maptools.org/show_bug.cgi?id=2489 (CVE-2014-8128)
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---
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ChangeLog | 5 +++++
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tools/thumbnail.c | 8 +++++++-
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2 files changed, 12 insertions(+), 1 deletion(-)
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diff --git a/tools/thumbnail.c b/tools/thumbnail.c
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index fab63f6..c50bbff 100644
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--- a/tools/thumbnail.c
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+++ b/tools/thumbnail.c
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@@ -568,7 +568,13 @@ setImage1(const uint8* br, uint32 rw, uint32 rh)
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err -= limit;
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sy++;
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if (err >= limit)
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- rows[nrows++] = br + bpr*sy;
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+ {
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+ /* We should perhaps error loudly, but I can't make sense of that */
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+ /* code... */
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+ if( nrows == 256 )
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+ break;
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+ rows[nrows++] = br + bpr*sy;
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+ }
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}
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setrow(row, nrows, rows);
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row += tnw;
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