Buffer overflow in the ImagingFliDecode function in libImaging/FliDecode.c in Pillow before 3.1.1 allows remote attackers to cause a denial of service (crash) via a crafted FLI file.
https://security.gentoo.org/glsa/201612-52
https://github.com/python-pillow/Pillow/commit/893a40850c2d5da41537958e40569c029a6e127b
https://github.com/python-pillow/Pillow/blob/c3cb690fed5d4bf0c45576759de55d054916c165/CHANGES.rst