Commit 374578b4a for imagemagick.org

commit 374578b4a3562970c12d6beb7e3d815eb6db1170
Author: Cristy <urban-warrior@imagemagick.org>
Date:   Sun Jul 5 08:51:24 2026 -0400

    sanity check

diff --git a/coders/pgx.c b/coders/pgx.c
index 299a5fa5a..6b2b10f79 100644
--- a/coders/pgx.c
+++ b/coders/pgx.c
@@ -197,6 +197,9 @@ static Image *ReadPGXImage(const ImageInfo *image_info,ExceptionInfo *exception)
       (void) CloseBlob(image);
       return(GetFirstImageInList(image));
     }
+  if ((image->columns > GetBlobSize(image)) ||
+      (image->rows > GetBlobSize(image)))
+    ThrowReaderException(CorruptImageError,"InsufficientImageDataInFile");
   status=SetImageExtent(image,image->columns,image->rows,exception);
   if (status == MagickFalse)
     return(DestroyImageList(image));