[Pam-developers] [linux-pam] #10: The maxlogins limit doesn't work

linux-pam trac at fedorahosted.org
Fri Jun 22 12:44:02 UTC 2012


#10: The maxlogins limit doesn't work
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Reporter:  wmknapik   |       Owner:  pam-developers@…
    Type:  defect     |      Status:  new
Priority:  major      |   Component:  modules
 Version:  1.1.x      |  Resolution:
Keywords:  maxlogins  |  Blocked By:
Blocking:             |
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Comment (by tmraz):

 I suppose this is a race condition, that is caused by the fact, that the
 maximum logins is enforced during the pam session call but the user
 sessions in utmp are established only after the pam session call is
 finished. So two simultaneous logins do not see each other. It would be
 really hard if not impossible to fix this race.

 But we can document this race in the pam_limits manual page.

-- 
Ticket URL: <https://fedorahosted.org/linux-pam/ticket/10#comment:2>
linux-pam <http://fedorahosted.org/linux-pam>
The Linux-PAM (Pluggable Authentication Modules) project


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