praecis_parse in ntpd/refclock_palisade.c in NTP 4.2.8p15 has an out-of-bounds write. Any attack method would be complex, e.g., with a manipulated GPS receiver.
github.com/spwpun/ntp-4.2.8p15-cves/blob/main/CVE-2023-26555
github.com/spwpun/ntp-4.2.8p15-cves/issues/1#issuecomment-1506546409
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