heifsave: limit output dimensions to match max input dimensions

lovell · lovell · commit 4e72334c1e4d · 2023-05-28T09:56:06.000+01:00
diff --git a/libvips/foreign/heifsave.c b/libvips/foreign/heifsave.c
@@ -545,6 +545,13 @@ vips_foreign_save_heif_build( VipsObject *object )
 	heif->page_height = vips_image_get_page_height( heif->image );
 	heif->n_pages = heif->image->Ysize / heif->page_height;
 
+	/* Apply libheif input limit of 32768x32768 to output.
+	 */
+	if( heif->page_width > 32768 || heif->page_height > 32768 ) {
+		vips_error( "heifsave", _( "image too large" ) );
+		return( -1 );
+	}
+
 	/* Make a heif image the size of a page. We send sink_disc() output 
 	 * here and write a frame each time it fills.
 	 */
