| 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) |
| Debian Bugs | 1151689 |
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) | | | 1151689 |
Notes
[trixie] - ntpsec <no-dsa> (Minor issue)
https://blog.ntpsec.org/2026/10/20/version-1.2.6.html