Werk #16919: Parsing of section inv_lldp_cache failed

Component

Checks & agents

Title

Parsing of section inv_lldp_cache failed

Date

Jun 10, 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
2.5.0p7 Not yet released	Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Cloud, Checkmk Ultimate MT

Previously, the inventory plugin parsing the inv_lldp_cache section could crash with an IndexError (list index out of range).

This happened when an LLDP neighbor advertised a port ID of sub-type "network address" (5) together with an empty port ID value. While rendering the address, the parser inspected the first byte to determine the address family and failed on the empty value.

As a result, affected hosts produced a crash report and no LLDP cache inventory data was created. The empty network address is now rendered as an empty string and the inventory completes normally.

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