CVE-2019-9169: Canonical Ubuntu Linux

Critical severity, CVSS 9.8. EPSS: 4.7% chance of exploitation in the next 30 days.

In the GNU C Library (aka glibc or libc6) through 2.29, proceed_next_node in posix/regexec.c has a heap-based buffer over-read via an attempted case-insensitive regular-expression match.

Affected products

• Canonical Ubuntu Linux: version 16.04 only; version 18.04 only; version 19.10 only
• GNU Glibc: up to and including 2.29
• McAfee Web Gateway: from 7.7.2.0, before 7.7.2.21 (fixed in 7.7.2.21); from 7.8.2.0, before 7.8.2.8 (fixed in 7.8.2.8); from 8.0.0, before 8.1.1 (fixed in 8.1.1)
• Netapp Cloud Backup: any version
• Netapp Ontap Select Deploy Administration Utility: affected versions not specified
• Netapp Steelstore Cloud Integrated Storage: affected versions not specified

Published 2019-02-26. Last modified 2026-06-17.