From 7c8ab995a65a32b8283297226e108ce828a5679a Mon Sep 17 00:00:00 2001
From: cenhuilin <cenhuilin@kylinos.cn>
Date: Fri, 19 Aug 2022 21:02:49 +0800
Subject: [PATCH] heap-buffer-overflow in magick at quantum-private.h PushShortPixel

---
 coders/tiff.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/coders/tiff.c b/coders/tiff.c
index 31839f6..32ae00a 100644
--- a/coders/tiff.c
+++ b/coders/tiff.c
@@ -1987,7 +1987,7 @@ static Image *ReadTIFFImage(const ImageInfo *image_info,
         number_pixels=(MagickSizeType) columns*rows;
         if (HeapOverflowSanityCheck(rows,sizeof(*tile_pixels)) != MagickFalse)
           ThrowTIFFException(ResourceLimitError,"MemoryAllocationFailed");
-        extent=MagickMax(rows*TIFFTileRowSize(tiff),TIFFTileSize(tiff));
+        extent=4*MagickMax(rows*TIFFTileRowSize(tiff),TIFFTileSize(tiff));
 #if defined(TIFF_VERSION_BIG)
         extent+=image->columns*sizeof(uint64);
 #else
-- 
2.33.0

