CVE-2025-61909 Icinga 2 signals sent as root to processes based on PID file written by the Icinga 2 daemon user

Icinga 2 is an open source monitoring system. From 2.10.0 to before 2.15.1, 2.14.7, and 2.13.13, the safe-reload script also used during systemctl reload icinga2 and logrotate configuration shipped with Icinga 2 read the PID of the main Icinga 2 process from a PID file writable by the daemon user...

CVE-2025-61909

CVE-2025-61909 affects Icinga 2: from 2.10.0 up to but not including 2.15.1, and also affected 2.14.7 and 2.13.13, the safe-reload script (used during icinga2 reload) and the logrotate config read the main Icinga 2 process PID from a PID file writable by the daemon user, but send signals as root....

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