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