libImaging/TiffDecode.c in Pillow before 6.2.2 has a TIFF decoding integer overflow, related to realloc.
github.com/python-pillow/Pillow/commit/4e2def2539ec13e53a82e06c4b3daf00454100c4
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2MMU3WT2X64GS5WHDPKKC2WZA7UIIQ3A/
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3DUMIBUYGJRAVJCTFUWBRLVQKOUTVX5P/
pillow.readthedocs.io/en/stable/releasenotes/6.2.2.html
usn.ubuntu.com/4272-1/