Commit 277541927 for imagemagick.org

commit 277541927c2de8317d4167ee16d57375f24971d3
Author: Cristy <urban-warrior@imagemagick.org>
Date:   Sat Jun 13 19:47:19 2026 -0400

    https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-c4v7-w88g-m6c4

diff --git a/coders/jp2.c b/coders/jp2.c
index 72160cb74..7de36420c 100644
--- a/coders/jp2.c
+++ b/coders/jp2.c
@@ -1161,7 +1161,7 @@ static MagickBooleanType WriteJP2Image(const ImageInfo *image_info,Image *image,
   jp2_image->x1=(unsigned int) (2*parameters->image_offset_x0+
     ((ssize_t) image->columns-1)*parameters->subsampling_dx+1);
   jp2_image->y1=(unsigned int) (2*parameters->image_offset_y0+
-    ((ssize_t) image->rows-1)*parameters->subsampling_dx+1);
+    ((ssize_t) image->rows-1)*parameters->subsampling_dy+1);
   if ((image->depth == 12) &&
       ((image->columns == 2048) || (image->rows == 1080) ||
        (image->columns == 4096) || (image->rows == 2160)))