*** This bug is a security vulnerability ***
You have been subscribed to a public security bug by Jamie Strandboge
(jdstrand):
Logging in as user1, then as user2, then using Ubuntu for a while.
After logging OUT as user 1, I start to repeatedly hear failed login noises.
Apparently, gdm starts looping.
At a rate of 40 pairs per minute, /var/log/auth.log gets filled with
gdm[6553]: pam_unix(gdm:auth): check pass; user unknown
gdm[6553]: pam_unix(gdm:auth): authentication failure; logname= uid=0 euid=0
tty=:0 ruser= rhost=
Logging out as user2 stops this.
Either some input device is trying to send something to gdm, or the
console is not correctly connected, or gdm is buggy.
As the root cause is unknown, and the login process is involved, this
behavior, of side-effects from it, might have security implications.
It does NOT happen all the time.
$ lsb_release -rd
Description: Ubuntu 8.04.1
Release: 8.04
I disabled Software Sound Mixing (ESD) as otherwise hang-up like
situations seem to occur with other software that tries to use sound
output.
** Affects: ubuntu
Importance: Undecided
Status: New
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In multi account environment, gdm starts looping , making failed login noises;
pam_unix(gdm:auth)
https://bugs.launchpad.net/bugs/261661
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