CVE-2020-10378: Canonical Ubuntu Linux

Medium severity, CVSS 5.5. EPSS: 1.1% chance of exploitation in the next 30 days.

In libImaging/PcxDecode.c in Pillow before 7.1.0, an out-of-bounds read can occur when reading PCX files where state->shuffle is instructed to read beyond state->buffer.

Affected products

• Canonical Ubuntu Linux: version 16.04 only; version 18.04 only; version 20.04 only
• Fedoraproject Fedora: version 31 only; version 32 only
• Python Pillow: before 7.1.0 (fixed in 7.1.0)

Published 2020-06-25. Last modified 2026-06-17.