CVE-2020-5311: Canonical Ubuntu Linux

Critical severity, CVSS 9.8. EPSS: 4.2% chance of exploitation in the next 30 days.

libImaging/SgiRleDecode.c in Pillow before 6.2.2 has an SGI buffer overflow.

Affected products

• Canonical Ubuntu Linux: version 18.04 only; version 19.10 only
• Debian Debian Linux: version 9.0 only; version 10.0 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.