File ImageMagick-CVE-2025-57807.patch of Package ImageMagick.40619

From 077a417a19a5ea8c85559b602754a5b928eef23e Mon Sep 17 00:00:00 2001
From: Cristy <urban-warrior@imagemagick.org>
Date: Sun, 24 Aug 2025 12:32:18 -0400
Subject: [PATCH] 
 https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-23hg-53q6-hqfg

---
 MagickCore/blob.c | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

Index: ImageMagick-7.0.7-34/MagickCore/blob.c
===================================================================
--- ImageMagick-7.0.7-34.orig/MagickCore/blob.c
+++ ImageMagick-7.0.7-34/MagickCore/blob.c
@@ -1458,7 +1458,7 @@ static inline ssize_t WriteBlobStream(Im
   extent=(MagickSizeType) (blob_info->offset+(MagickOffsetType) length);
   if (extent >= blob_info->extent)
     {
-      extent=blob_info->extent+blob_info->quantum+length;
+      extent+=blob_info->quantum+length;
       blob_info->quantum<<=1;
       if (SetBlobExtent(image,extent) == MagickFalse)
         return(0);
@@ -5516,12 +5516,15 @@ MagickExport ssize_t WriteBlob(Image *im
       register unsigned char
         *q;
 
-      if ((blob_info->offset+(MagickOffsetType) length) >=
-          (MagickOffsetType) blob_info->extent)
+      MagickSizeType
+        extent;
+
+      extent=(MagickSizeType) (blob_info->offset+(MagickOffsetType) length);
+      if (extent >= blob_info->extent)
         {
           if (blob_info->mapped != MagickFalse)
             return(0);
-          blob_info->extent+=length+blob_info->quantum;
+          blob_info->extent=extent+blob_info->quantum+length;
           blob_info->quantum<<=1;
           blob_info->data=(unsigned char *) ResizeQuantumMemory(
             blob_info->data,blob_info->extent+1,sizeof(*blob_info->data));