mstolfp in libntp/mstolfp.c in NTP 4.2.8p15 has an out-of-bounds write when adding a decimal point. An adversary may be able to attack a client ntpq process, but cannot attack ntpd.
https://cert-portal.siemens.com/productcert/html/ssa-238730.html
https://github.com/spwpun/ntp-4.2.8p15-cves/issues/1#issuecomment-1506667321
https://github.com/spwpun/ntp-4.2.8p15-cves/blob/main/CVE-2023-26552