The upstream of fping https://github.com/schweikert/fping released a new version 5.4 on August 19, 2025.

Bugfix 5.3 to 5.4
-----------------


* Memory allocation safety checks for event storage (thanks David.A for the bug report)
* Fix off-by-one boundary check in seqmap code (thanks David.A for the bug report)
* The minimum value for the period (-p flag) is now 0.001 milliseconds,
  since it probably never makes sense to use a smaller value, and to avoid doing
  a very large memory allocation for event storage.


Debian Bugs
-----------
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1104311

Version 5.5 has now been released.

https://github.com/schweikert/fping/releases/tag/v5.5