Description
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, but send the signal as the root user. This can allow the Icinga user to send signals to processes it would otherwise not permitted to. A fix is included in the following Icinga 2 versions: 2.15.1, 2.14.7, and 2.13.13.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Icinga | icinga2 | >=2.10.0, < 2.13.13, >=2.14.0, < 2.14.7, >=2.15.0, < 2.15.1 | — |
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 | icinga2 | 2.15.1-1 | — |
| Debian 13 | icinga2 | 2.14.6-1+deb13u1 | — |
| Debian 12 | icinga2 | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.04 LTS | icinga2 | No fix yet | — |
| Ubuntu 25.10 | icinga2 | No fix yet | — |
| Ubuntu 24.04 LTS | icinga2 | No fix yet | — |
| Ubuntu 22.04 LTS | icinga2 | No fix yet | — |
| Ubuntu 20.04 LTS | icinga2 | No fix yet | — |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 18.04 LTS | icinga2 | No fix yet | — |
| Ubuntu 16.04 LTS | icinga2 | No fix yet | — |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | icinga2 | 2.15.1-1.1 | openSUSE-SU-2025:15644-1 |
Advisories 2
- openSUSE-SU-2025:15644-1 icinga2-2.15.1-1.1 on GA media SUSE / openSUSE Security Updates · Mar 23, 2026
- WID-SEC-2025-2326 Icinga: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 16, 2025
References
- https://github.com/Icinga/icinga2/security/advisories/GHSA-pg6g-g99v-mw46
- https://github.com/Icinga/icinga2/issues/10527
- https://github.com/Icinga/icinga2/commit/51ec73cbd922a76fc0f60e1d8d33acd7caa5d587
- https://icinga.com/blog/releasing-icinga-2-v2-15-1-2-14-7-and-2-13-13-and-icinga-db-web-v1-2-3-and-1-1-4