Description
nptd-rs is a tool for synchronizing your computer's clock, implementing the NTP and NTS protocols. In versions between 1.2.0 and 1.6.1 inclusive servers which allow non-NTS traffic are affected by a denial of service vulnerability, where an attacker can induce a message storm between two NTP servers running ntpd-rs. Client-only configurations are not affected. Affected users are recommended to upgrade to version 1.6.2 as soon as possible.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| pendulum-project | ntpd-rs | >= 1.2.0, < 1.6.2 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | rust-ntpd | 1.6.2-1 | — |
| Debian 13 | rust-ntpd | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.04 LTS | rust-ntpd | No fix yet | — |
| Ubuntu 25.10 | rust-ntpd | No fix yet | — |
| Ubuntu 24.04 LTS | rust-ntpd | No fix yet | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| crates.io | ntpd-rs | >= 1.2.0, < 1.6.2 | 1.6.2 | GHSA-4855-q42w-5vr4 |