Since update to UCS5 - rkhunter suspicious (large) shared memory

Hi guys,

since I upgraded a system here (mailserver Kopano) to Buster, I get a daily mail with this content.

Warning: The following suspicious (large) shared memory segments have been found:
         Attached segment with no pathname: Owner: www-data Segment ID: 0 Attached processes: 10 Creator PID: 2013 Last PID: 2912 Size: 2013 (configured size allowed: 2912)

But the listed pid are not exist.

Normally, such messages will display a path, which you can then whitelist, e.g.

ALLOWIPCPROC=/usr/sbin/apache2

Except that it isn’t. How can I find out what Rkhunter wants from me?

Very Thanks