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Reordered sections to match template
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@ -29,6 +29,25 @@ perform operations on it.
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The CVE is regarding DOS problems, such as consuming large amounts of memory,
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or taking a large amount of time to process an image.
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API Changes
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===========
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Image.getexif
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^^^^^^^^^^^^^
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To allow for lazy loading of Exif data, ``Image.getexif()`` now returns a
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shared instance of ``Image.Exif``.
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Deprecations
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^^^^^^^^^^^^
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Image.frombuffer
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~~~~~~~~~~~~~~~~
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There has been a longstanding warning that the defaults of ``Image.frombuffer``
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may change in the future for the "raw" decoder. The change will now take place
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in Pillow 7.0.
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API Additions
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=============
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@ -74,25 +93,6 @@ ImageGrab on multi-monitor Windows
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An ``all_screens`` argument has been added to ``ImageGrab.grab``. If ``True``,
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all monitors will be included in the created image.
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API Changes
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===========
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Image.getexif
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^^^^^^^^^^^^^
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To allow for lazy loading of Exif data, ``Image.getexif()`` now returns a
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shared instance of ``Image.Exif``.
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Deprecations
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^^^^^^^^^^^^
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Image.frombuffer
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~~~~~~~~~~~~~~~~
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There has been a longstanding warning that the defaults of ``Image.frombuffer``
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may change in the future for the "raw" decoder. The change will now take place
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in Pillow 7.0.
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Other Changes
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=============
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@ -1,49 +1,6 @@
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9.1.0
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-----
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API Changes
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===========
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Raise an error when performing a negative crop
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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Performing a negative crop on an image previously just returned a ``(0, 0)`` image. Now
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it will raise a :py:exc:`ValueError`, to help reduce confusion if a user has unintentionally
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provided the wrong arguments.
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Added specific error if path coordinate type is incorrect
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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Rather than returning a :py:exc:`SystemError`, passing the incorrect types of coordinates into
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a path will now raise a more specific :py:exc:`ValueError`, with the message "incorrect
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coordinate type".
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Replace requirements.txt with extras
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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Rather than installing all dependencies for docs and tests via ``requirements.txt``,
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``extras_require`` is used instead. This installs only those needed and at the same
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time as installing Pillow.
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For example:
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.. code-block:: bash
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# Install with dependencies for tests:
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python3 -m pip install .[tests]
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# Or for building docs:
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python3 -m pip install .[docs]
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# Or for all:
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python3 -m pip install .[docs,tests]
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On macOS, the last argument may need to be wrapped in quotes, e.g.
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``python3 -m pip install ".[tests]"``
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Therefore ``requirements.txt`` has been removed along with the ``make install-req``
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command for installing its contents.
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Deprecations
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============
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@ -137,6 +94,49 @@ The stub image plugin ``FitsStubImagePlugin`` has been deprecated and will be re
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Pillow 10.0.0 (2023-07-01). FITS images can be read without a handler through
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:mod:`~PIL.FitsImagePlugin` instead.
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API Changes
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===========
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Raise an error when performing a negative crop
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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Performing a negative crop on an image previously just returned a ``(0, 0)`` image. Now
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it will raise a :py:exc:`ValueError`, to help reduce confusion if a user has unintentionally
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provided the wrong arguments.
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Added specific error if path coordinate type is incorrect
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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Rather than returning a :py:exc:`SystemError`, passing the incorrect types of coordinates into
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a path will now raise a more specific :py:exc:`ValueError`, with the message "incorrect
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coordinate type".
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Replace requirements.txt with extras
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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Rather than installing all dependencies for docs and tests via ``requirements.txt``,
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``extras_require`` is used instead. This installs only those needed and at the same
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time as installing Pillow.
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For example:
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.. code-block:: bash
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# Install with dependencies for tests:
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python3 -m pip install .[tests]
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# Or for building docs:
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python3 -m pip install .[docs]
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# Or for all:
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python3 -m pip install .[docs,tests]
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On macOS, the last argument may need to be wrapped in quotes, e.g.
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``python3 -m pip install ".[tests]"``
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Therefore ``requirements.txt`` has been removed along with the ``make install-req``
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command for installing its contents.
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API Additions
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=============
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@ -1,6 +1,11 @@
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9.2.0
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-----
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Security
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========
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An additional decompression bomb check has been added for the GIF format.
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Deprecations
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============
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@ -132,11 +137,6 @@ with "transparency" in ``im.info``, and apply the transparency to the palette in
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The image's palette mode will become "RGBA", and "transparency" will be removed from
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``im.info``.
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Security
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========
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An additional decompression bomb check has been added for the GIF format.
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Other Changes
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=============
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@ -1,6 +1,33 @@
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9.3.0
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-----
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Security
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========
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Initialize libtiff buffer when saving
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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When saving a TIFF image to a file object using libtiff, the buffer was not
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initialized. This behaviour introduced in Pillow 2.0.0, and has now been fixed.
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Decode JPEG compressed BLP1 data in original mode
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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Within the BLP image format, BLP1 data may use JPEG compression. Instead of
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telling the JPEG library that this data is in BGRX mode, Pillow will now
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decode the data in its natural CMYK mode, then convert it to RGB and rearrange
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the channels afterwards. Trying to load the data in an incorrect mode could
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result in a segmentation fault. This issue was introduced in Pillow 9.1.0.
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Limit SAMPLESPERPIXEL to avoid runtime DOS
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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A large value in the ``SAMPLESPERPIXEL`` tag could lead to a memory and runtime DOS in
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``TiffImagePlugin.py`` when setting up the context for image decoding.
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This was introduced in Pillow 9.2.0, found with `OSS-Fuzz`_ and fixed by limiting
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``SAMPLESPERPIXEL`` to the number of planes that we can decode.
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API Additions
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=============
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@ -38,33 +65,6 @@ The data from :py:data:`~PIL.ExifTags.TAGS` and
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:py:data:`~PIL.ExifTags.GPS`.
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Security
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========
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Initialize libtiff buffer when saving
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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When saving a TIFF image to a file object using libtiff, the buffer was not
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initialized. This behaviour introduced in Pillow 2.0.0, and has now been fixed.
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Decode JPEG compressed BLP1 data in original mode
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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Within the BLP image format, BLP1 data may use JPEG compression. Instead of
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telling the JPEG library that this data is in BGRX mode, Pillow will now
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decode the data in its natural CMYK mode, then convert it to RGB and rearrange
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the channels afterwards. Trying to load the data in an incorrect mode could
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result in a segmentation fault. This issue was introduced in Pillow 9.1.0.
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Limit SAMPLESPERPIXEL to avoid runtime DOS
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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A large value in the ``SAMPLESPERPIXEL`` tag could lead to a memory and runtime DOS in
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``TiffImagePlugin.py`` when setting up the context for image decoding.
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This was introduced in Pillow 9.2.0, found with `OSS-Fuzz`_ and fixed by limiting
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``SAMPLESPERPIXEL`` to the number of planes that we can decode.
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Other Changes
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=============
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@ -1,6 +1,31 @@
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9.5.0
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-----
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Security
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========
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Clear PPM half token after use
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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Image files that are small on disk are often prevented from expanding to be
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big images consuming a large amount of resources simply because they lack the
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data to populate those resources.
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PpmImagePlugin might hold onto the last data read for a pixel value in case the
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pixel value has not been finished yet. However, that data was not being cleared
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afterwards, meaning that infinite data could be available to fill any image
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size. This has been present since Pillow 9.2.0.
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That data is now cleared after use.
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Saving TIFF tag ImageSourceData
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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If Pillow incorrectly saved the TIFF tag ImageSourceData as ASCII instead of
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UNDEFINED, a segmentation fault was triggered.
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The correct tag type will now be used by default instead.
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Deprecations
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============
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@ -46,31 +71,6 @@ If OpenJPEG 2.4.0 or later is available and the ``plt`` keyword argument
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is present and true when saving JPEG2000 images, tell the encoder to generate
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PLT markers.
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Security
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========
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Clear PPM half token after use
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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Image files that are small on disk are often prevented from expanding to be
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big images consuming a large amount of resources simply because they lack the
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data to populate those resources.
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PpmImagePlugin might hold onto the last data read for a pixel value in case the
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pixel value has not been finished yet. However, that data was not being cleared
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afterwards, meaning that infinite data could be available to fill any image
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size. This has been present since Pillow 9.2.0.
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That data is now cleared after use.
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Saving TIFF tag ImageSourceData
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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If Pillow incorrectly saved the TIFF tag ImageSourceData as ASCII instead of
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UNDEFINED, a segmentation fault was triggered.
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The correct tag type will now be used by default instead.
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Other Changes
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=============
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