CVE-2020-5310: Canonical Ubuntu Linux

High severity, CVSS 8.8. EPSS: 2% chance of exploitation in the next 30 days.

libImaging/TiffDecode.c in Pillow before 6.2.2 has a TIFF decoding integer overflow, related to realloc.

Affected products

• Canonical Ubuntu Linux: version 14.04 only; version 16.04 only; version 18.04 only; version 19.10 only
• Fedoraproject Fedora: version 30 only; version 31 only
• Python Pillow: before 6.2.2 (fixed in 6.2.2)

Published 2020-01-03. Last modified 2026-06-17.