CVE-2018-1123: Canonical Ubuntu Linux

High severity, CVSS 7.5. EPSS: 8.9% chance of exploitation in the next 30 days.

procps-ng before version 3.3.15 is vulnerable to a denial of service in ps via mmap buffer overflow. Inbuilt protection in ps maps a guard page at the end of the overflowed buffer, ensuring that the impact of this flaw is limited to a crash (temporary denial of service).

Affected products

• Canonical Ubuntu Linux: version 12.04 only; version 14.04 only; version 16.04 only; version 17.10 only; version 18.04 only
• Debian Debian Linux: version 7.0 only; version 8.0 only; version 9.0 only
• Procps-NG Project Procps-NG: before 3.3.15 (fixed in 3.3.15)

Published 2018-05-23. Last modified 2026-06-17.