In utf8trunc in zephyr/lib/utils/utf8.c, lastbyte_p can point to one byte before the string pointer if the string is empty.
[ { "events": [ { "introduced": "0" }, { "last_affected": "3.6.0" } ] } ]
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-6443.json"