47 lines
1.5 KiB
Diff
47 lines
1.5 KiB
Diff
From fb89eab3ed46bbb0276bdee05b570455f6a27d2f Mon Sep 17 00:00:00 2001
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From: Su_Laus <sulau@freenet.de>
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Date: Sun, 6 Feb 2022 19:52:17 +0100
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Subject: [PATCH] Move the crop_width and crop_length computation after the
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sanity check to avoid warnings when built with
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-fsanitize=unsigned-integer-overflow.
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Upstream-Status: Backport [https://gitlab.com/libtiff/libtiff/-/commit/b258ed69a485a9cfb299d9f060eb2a46c54e5903?merge_request_iid=294]
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Signed-off-by: Teoh Jay Shen <jay.shen.teoh@intel.com>
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CVE: CVE-2022-2868
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---
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tools/tiffcrop.c | 5 ++---
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1 file changed, 2 insertions(+), 3 deletions(-)
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diff --git a/tools/tiffcrop.c b/tools/tiffcrop.c
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index 0ef5bb2..99e4208 100644
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--- a/tools/tiffcrop.c
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+++ b/tools/tiffcrop.c
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@@ -5389,15 +5389,13 @@ computeInputPixelOffsets(struct crop_mask *crop, struct image_data *image,
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off->endx = endx;
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off->endy = endy;
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- crop_width = endx - startx + 1;
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- crop_length = endy - starty + 1;
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-
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if (endx + 1 <= startx)
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{
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TIFFError("computeInputPixelOffsets",
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"Invalid left/right margins and /or image crop width requested");
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return (-1);
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}
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+ crop_width = endx - startx + 1;
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if (crop_width > image->width)
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crop_width = image->width;
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@@ -5407,6 +5405,7 @@ computeInputPixelOffsets(struct crop_mask *crop, struct image_data *image,
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"Invalid top/bottom margins and /or image crop length requested");
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return (-1);
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}
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+ crop_length = endy - starty + 1;
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if (crop_length > image->length)
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crop_length = image->length;
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