CVE-2018-16428: Canonical Ubuntu Linux

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

In GNOME GLib 2.56.1, g_markup_parse_context_end_parse() in gmarkup.c has a NULL pointer dereference.

Affected products

• Canonical Ubuntu Linux: version 12.04 only; version 14.04 only; version 16.04 only; version 18.04 only
• Gnome Glib: version 2.56.1 only

Published 2018-09-04. Last modified 2026-06-17.