Staff members should have at least 'circulate_remaining_permissions' to display patron information (as with Bug 14244). However, the biblio detail page (cgi-bin/koha/catalogue/detail.pl) displays in the 'Holdings' tab, column 'Status' information like: 'Currently in local use by Edna Acosta : due 11/12/2015 23:59', and the link on the patron's name leads to the "No permission" page. This information should not display if 'circulate_remaining_permissions' is not set.
I am not sure if it should be the circulation permission. I think borrowers or a new sub permission to borrowers would make sense. It already has a sub permission now for viewing other libraries patrons.