Ticket #27951: 27951.diff

edit.php

@@ -15 +15 @@
 $post_type = $typenow;
 $post_type_object = get_post_type_object( $post_type );
 
+if ( 'attachment' == $post_type ) {
+        if ( wp_redirect( admin_url( 'upload.php' ) ) ) {
+                exit;
+        }
+}
+
 if ( ! $post_type_object )
         wp_die( __( 'Invalid post type' ) );