File ImageMagick-CVE-2025-55212.patch of Package ImageMagick.40311

From 5f0bcf986b8b5e90567750d31a37af502b73f2af Mon Sep 17 00:00:00 2001
From: Cristy <urban-warrior@imagemagick.org>
Date: Sun, 17 Aug 2025 14:33:44 -0400
Subject: [PATCH] 
 https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-fh55-q5pj-pxgw

---
 MagickCore/resize.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

Index: ImageMagick-6.8.8-1/magick/resize.c
===================================================================
--- ImageMagick-6.8.8-1.orig/magick/resize.c
+++ ImageMagick-6.8.8-1/magick/resize.c
@@ -3748,8 +3748,8 @@ MagickExport Image *ThumbnailImage(const
     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
   assert(exception != (ExceptionInfo *) NULL);
   assert(exception->signature == MagickSignature);
-  x_factor=(MagickRealType) columns/(MagickRealType) image->columns;
-  y_factor=(MagickRealType) rows/(MagickRealType) image->rows;
+  x_factor=(MagickRealType) (image->columns*PerceptibleReciprocal((MagickRealType) columns));
+  y_factor=(MagickRealType) (image->rows*PerceptibleReciprocal((MagickRealType) rows));
   if ((x_factor*y_factor) > 0.1)
     thumbnail_image=ResizeImage(image,columns,rows,image->filter,image->blur,
       exception);