gentoo-overlay/media-libs/tiff/files/tiff-4.0.7-bug2620.patch

From 76c4b35f114bc9614700accd22cc4a0b4b6b92d3 Mon Sep 17 00:00:00 2001
From: Even Rouault <even.rouault@spatialys.com>
Date: Sat, 3 Dec 2016 11:35:56 +0000
Subject: [PATCH] * tools/tiffcrop.c: fix readContigStripsIntoBuffer() in -i
 (ignore) mode so that the output buffer is correctly incremented to avoid
 write outside bounds. Reported by Agostino Sarubbo. Fixes
 http://bugzilla.maptools.org/show_bug.cgi?id=2620

---
 ChangeLog        | 7 +++++++
 tools/tiffcrop.c | 4 ++--
 2 files changed, 9 insertions(+), 2 deletions(-)

diff --git a/tools/tiffcrop.c b/tools/tiffcrop.c
index 722b132cee6d..bdcbd63ed70b 100644
--- a/tools/tiffcrop.c
+++ b/tools/tiffcrop.c
@@ -3698,7 +3698,7 @@ static int readContigStripsIntoBuffer (TIFF* in, uint8* buf)
                                   (unsigned long) strip, (unsigned long)rows);
                         return 0;
                 }
-                bufp += bytes_read;
+                bufp += stripsize;
         }
 
         return 1;
-- 
2.12.0