CVE-2018-18751: Canonical Ubuntu Linux

Critical severity, CVSS 9.8. EPSS: 4.3% chance of exploitation in the next 30 days.

An issue was discovered in GNU gettext 0.19.8. There is a double free in default_add_message in read-catalog.c, related to an invalid free in po_gram_parse in po-gram-gen.y, as demonstrated by lt-msgfmt.

Affected products

• Canonical Ubuntu Linux: version 12.04 only; version 14.04 only; version 16.04 only; version 18.04 only; version 18.10 only
• GNU Gettext: version 0.19.8 only
• Red Hat Enterprise Linux: version 7.0 only

Published 2018-10-29. Last modified 2026-06-17.