[Bug 977313] Re: Too many logins - sessions not cleared

[Steve Langasek]

pam_limits only checks the contents of utmp to count logins, it doesn't
write login entries to the file.  If openssh is failing to clean up its
login records, that's an openssh issue.

** Package changed: pam (Ubuntu) => openssh (Ubuntu)

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Title:
  Too many logins - sessions not cleared

Status in “openssh” package in Ubuntu:
  New

Bug description:
  Ubuntu 11.10 server example:

  When I configure user ice to allow only 3 logins logged out SSH
  sessions are not being cleared.

  /etc/security/limits.conf

  ice              hard    maxlogins       3

  The user ice can login and logout many times without problem but if
  they login 3 times and hit the maxlogins limit then logout of all
  sessions the user can't log back in again even though there are zero
  logged in sessions.

  /var/log/auth.log

  pam_unix(sshd:session): session opened for user ice by (uid=0)
  pam_limits(sshd:session): Too many logins (max 3) for ice

  PAM reports too many logins even though the user ice has no current
  logins.

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