Commit 3d653bea2 for imagemagick.org

commit 3d653bea2df085c728a1c8f775808e1e9249dff9
Author: Cristy <urban-warrior@imagemagick.org>
Date:   Thu Apr 9 10:39:06 2026 -0400

    https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-pwg5-6jfc-crvh

diff --git a/coders/jp2.c b/coders/jp2.c
index 95971ce43..3703d10ff 100644
--- a/coders/jp2.c
+++ b/coders/jp2.c
@@ -1103,10 +1103,12 @@ static MagickBooleanType WriteJP2Image(const ImageInfo *image_info,Image *image,

       flags=ParseGeometry(image_info->sampling_factor,&geometry_info);
       if ((flags & RhoValue) != 0)
-        parameters->subsampling_dx=(int) geometry_info.rho;
+        parameters->subsampling_dx=(int) MagickMax(
+          geometry_info.rho,1.0);
       parameters->subsampling_dy=parameters->subsampling_dx;
       if ((flags & SigmaValue) != 0)
-        parameters->subsampling_dy=(int) geometry_info.sigma;
+        parameters->subsampling_dy=(int) MagickMax(
+          geometry_info.sigma,1.0);
     }
   property=GetImageProperty(image,"comment",exception);
   if (property != (const char *) NULL)