CVE-2026-102484

Name	CVE-2026-102484
Description	Heap-based buffer overflow in the JJY refclock driver in NTPsec ntpd before 1.2.6 allows an attacker who controls the Telephone JJY time source to corrupt memory or crash ntpd via more than six time replies.
Source	CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
ntpsec (PTS)	bookworm, bookworm (security)	1.2.2+dfsg1-1+deb12u1	vulnerable
	trixie	1.2.3+dfsg1-8	vulnerable
	forky, sid	1.2.5+dfsg-1	vulnerable

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
ntpsec	source	(unstable)	(unfixed)

https://blog.ntpsec.org/2026/10/20/version-1.2.6.html