CVE-2023-40359: xterm: ReGIS reporting for character-set names containing characters other than alphanumerics or underscore.

Severity: Critical

CVSS Score: 9.8

xterm before 380 supports ReGIS reporting for character-set names even if they have unexpected characters (i.e., neither alphanumeric nor underscore), aka a pointer/overflow issue. This can only occur for xterm installations that are configured at compile time to use a certain experimental feature.