CVE-2018-19788: Canonical Ubuntu Linux

High severity, CVSS 8.8. EPSS: 11.6% chance of exploitation in the next 30 days.

A flaw was found in PolicyKit (aka polkit) 0.115 that allows a user with a uid greater than INT_MAX to successfully execute any systemctl command.

Affected products

• Canonical Ubuntu Linux: version 12.04 only; version 14.04 only; version 16.04 only; version 18.04 only; version 18.10 only
• Debian Debian Linux: version 8.0 only; version 9.0 only
• Polkit Project Polkit: version 0.115 only

Published 2018-12-03. Last modified 2026-06-17.