CVE-2018-7054: Canonical Ubuntu Linux

Critical severity, CVSS 9.8. EPSS: 2.4% chance of exploitation in the next 30 days.

An issue was discovered in Irssi before 1.0.7 and 1.1.x before 1.1.1. There is a use-after-free when a server is disconnected during netsplits. NOTE: this issue exists because of an incomplete fix for CVE-2017-7191.

Affected products

• Canonical Ubuntu Linux: version 14.04 only; version 16.04 only; version 17.10 only
• Debian Debian Linux: version 9.0 only
• Irssi Irssi: before 1.0.7 (fixed in 1.0.7); version 1.1.0 only

Published 2018-02-15. Last modified 2026-06-17.