CVE-2019-16163: Canonical Ubuntu Linux

High severity, CVSS 7.5. EPSS: 2.8% chance of exploitation in the next 30 days.

Oniguruma before 6.9.3 allows Stack Exhaustion in regcomp.c because of recursion in regparse.c.

Affected products

• Canonical Ubuntu Linux: version 14.04 only
• Debian Debian Linux: version 8.0 only
• Fedoraproject Fedora: version 29 only; version 30 only
• Oniguruma Project Oniguruma: before 6.9.3 (fixed in 6.9.3)

Published 2019-09-09. Last modified 2026-06-17.