Changes in TIFF v4.0.2
======================

.. table:: References
    :widths: auto

    ======================  ==========================================
    Current Version         v4.0.2 (:tag:`Release-v4-0-2`)
    Previous Version        :doc:`v4.0.1 <v4.0.1>`
    Master Download Site    `<https://download.osgeo.org/libtiff/>`_
    Master HTTP Site        `<https://download.osgeo.org/libtiff/>`_
    ======================  ==========================================


This document describes the changes made to the software between the
*previous* and *current* versions (see above).  If you don't
find something listed here, then it was not done in this timeframe, or
it was not considered important enough to be mentioned.  The following
information is located here


Major changes
-------------

* None


Software configuration changes
------------------------------

* None


Library changes
---------------

* :file:`tif_getimage.c`: added support for _SEPARATED CMYK images.

* :file:`tif_getimage.c`: Added support for greyscale + alpha.

* Added :c:func:`TIFFCreateCustomDirectory` and :file:`TIFFCreateEXIFDirectory` functions.

* :file:`tif_print.c`: Lots of fixes around printing corrupt or hostile input.
    
* Improve handling of corrupt ycbcrsubsampling values. 

* :file:`tif_unix.c`: use :c:func:`strerror` to get meaningful error messages.

* :file:`tif_jpeg.c`: fix serious bugs in :c:func:`JPEGDecodeRaw`.

* :file:`tif_jpeg.c`: Fix size overflow (zdi-can-1221, :cve:`2012-1173`).


Tools changes
-------------

* :program:`tiff2pdf`:  Defend against integer overflows while
  calculating required buffer sizes (:cve:`2012-2113`).


Contributed software changes
----------------------------

* None