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Werk #22957: Debian package: fix the setuid fallback

Component Site management
Title Debian package: fix the setuid fallback
Date Nov 2, 2026
Level Trivial Change
Class Bug Fix
Compatibility Compatible - no manual interaction needed
Checkmk versions & editions
3.0.0b1
Not yet released
Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Cloud, Checkmk Ultimate MT

The Debian package gives programs like mkeventd_open514 and check_icmp the Linux capabilities they need while installing. Where that fails, e.g. on a filesystem without support for capabilities, it was meant to make them setuid root instead, see Werk #7774. That fallback never worked: The installation printed "Failed to set capabilities ... Falling back to setuid." and then aborted, as it passed chmod a wrong path. Now the fallback works, and the installation completes.

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