From 38e3984b95ed5dc9820cba7af13c9a000eba9742 Mon Sep 17 00:00:00 2001

From: pgajdos <pgajdos@suse.cz>

Date: Tue, 13 Nov 2018 09:03:31 +0100

Subject: [PATCH 06/10] prevent integer overflow

---

 tools/tiffcp.c | 6 ++++++

 1 file changed, 6 insertions(+)

diff --git a/tools/tiffcp.c b/tools/tiffcp.c

index 2903461..754ee9f 100644

--- a/tools/tiffcp.c

+++ b/tools/tiffcp.c

@@ -1402,6 +1402,12 @@ DECLAREreadFunc(readSeparateTilesIntoBuffer)

 					status = 0;

 					goto done;

 				}

+				if (0xFFFFFFFF / tilew < spp)

+				{

+					TIFFError(TIFFFileName(in), "Error, either TileWidth (%u) or BitsPerSample (%u) is too large", tilew, bps);

+					status = 0;

+					goto done;

+				}

 				/*

 				 * Tile is clipped horizontally.  Calculate

 				 * visible portion and skewing factors.

-- 

2.17.2