This update for ntp fixes the following issues:
ntp was updated to 4.2.8p17:
Update to 4.2.8p16:
Multiple bug fixes and improvements. For details, see /usr/share/doc/packages/ntp/ChangeLog
http://www.ntp.org/support/securitynotice/428-series-changelog/
CVE-2023-26555: Fixed assertion failure on malformed RT-11 dates (bsc#1210390).