From ea6d8ff30c7483d47ecc0eb6be9a67422c1a7009 Mon Sep 17 00:00:00 2001
From: Arie Haenel <arie.haenel@jct.ac.il>
Date: Wed, 19 Jul 2023 19:34:25 +0000
Subject: tiffcp: fix memory corruption (overflow) on hostile images (fixes
 #591)

---
 tools/tiffcp.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/tools/tiffcp.c b/tools/tiffcp.c
index c6ac5d12..a83700a1 100644
--- a/tools/tiffcp.c
+++ b/tools/tiffcp.c
@@ -1438,6 +1438,11 @@ DECLAREreadFunc(readSeparateTilesIntoBuffer)
 		TIFFError(TIFFFileName(in), "Error, cannot handle that much samples per tile row (Tile Width * Samples/Pixel)");
 		return 0;
 	}
+	if ( (imagew - tilew * spp) > INT_MAX )
+	{
+		TIFFError(TIFFFileName(in), "Error, image raster scan line size is too large");
+		return 0;
+	}   
 	iskew = imagew - tilew*spp;
 	tilebuf = limitMalloc(tilesize);
 	if (tilebuf == 0)
-- 
2.30.2