Commit 7ed77f6eb for imagemagick.org

commit 7ed77f6eb37ee83408dc3b40aa8752bfc5070180
Author: Cristy <urban-warrior@imagemagick.org>
Date:   Fri Sep 18 09:00:59 2026 -0400

    https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-9hqg-c52m-2h83

diff --git a/MagickCore/blob.c b/MagickCore/blob.c
index 9561a686e..fda922f5c 100644
--- a/MagickCore/blob.c
+++ b/MagickCore/blob.c
@@ -1113,6 +1113,23 @@ MagickExport void *DetachBlob(BlobInfo *blob_info)
 %    o image: the image.
 %
 */
+
+static inline void ResetDisassociatedBlobStorage(BlobInfo *blob_info)
+{
+  assert(blob_info != (BlobInfo *) NULL);
+  assert(blob_info->signature == MagickCoreSignature);
+  if (blob_info->mapped != MagickFalse)
+    {
+      RelinquishMagickResource(MapResource,blob_info->length);
+      blob_info->mapped=MagickFalse;
+    }
+  blob_info->data=(unsigned char *) NULL;
+  blob_info->length=0;
+  blob_info->offset=0;
+  blob_info->mode=UndefinedBlobMode;
+  blob_info->type=UndefinedStream;
+}
+
 MagickExport void DisassociateBlob(Image *image)
 {
   BlobInfo
@@ -1138,6 +1155,7 @@ MagickExport void DisassociateBlob(Image *image)
   if (clone == MagickFalse)
     return;
   clone_info=CloneBlobInfo(blob_info);
+  ResetDisassociatedBlobStorage(clone_info);
   DestroyBlob(image);
   image->blob=clone_info;
 }
@@ -3414,7 +3432,7 @@ MagickExport MagickBooleanType OpenBlob(const ImageInfo *image_info,

       *fileMode=(*type);
       fileMode[1]='\0';
-      blob_info->file_info.file=fdopen(StringToLong(filename+3),fileMode);
+      blob_info->file_info.file=fdopen(StringToInteger(filename+3),fileMode);
       if (blob_info->file_info.file == (FILE *) NULL)
         {
           ThrowFileException(exception,BlobError,"UnableToOpenBlob",filename);
diff --git a/MagickCore/policy-private.h b/MagickCore/policy-private.h
index c55f9193c..1f11f772a 100644
--- a/MagickCore/policy-private.h
+++ b/MagickCore/policy-private.h
@@ -27,7 +27,7 @@ extern "C" {
 #include "MagickCore/string-private.h"
 #include "MagickCore/utility-private.h"

-#if MAGICKCORE_ZERO_CONFIGURATION_SUPPORT
+#if defined(MAGICKCORE_ZERO_CONFIGURATION_SUPPORT)
 /*
   Zero configuration security policy.  Discussion @
   https://imagemagick.org/script/security-policy.php.