Pillow/docs/releasenotes/6.2.2.rst

6.2.2
-----

Security
========

This release fixes several buffer overflow issues and a DOS attack vulnerability.

:cve:`2020-5310`, :cve:`2020-5311`, :cve:`2020-5312`, :cve:`2020-5313`: Overflow checks added
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

Overflow checks have been added when calculating the size of a memory block to be reallocated
in the processing of TIFF, SGI, PCX and FLI images.

:cve:`2019-19911`: DOS attack vulnerability
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

If an FPX image reports that it has a large number of bands, a large amount of
resources will be used when trying to process the image. This is fixed by
limiting the number of bands to those usable by Pillow.