[Bug 3723] sshd failed to close session when client specifies no remote command

[bugzilla-daemon at mindrot.org]

https://bugzilla.mindrot.org/show_bug.cgi?id=3723

Damien Miller <djm at mindrot.org> changed:

           What    |Removed                     |Added
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                 CC|                            |djm at mindrot.org

--- Comment #1 from Damien Miller <djm at mindrot.org> ---
What operating system are you using? Did you get your openssh packages
from your OS vendor? I ask because OpenSSH doesn't have any integration
with systemd that would support tracking of connections without
shell/login sessions. It's possible your OS vendor has added this, but
done it in a manner that causes the problem you mention.

sshd doesn't set any limit on concurrent active connections nor does it
terminate connections without shell/login sessions automatically by
default.

OpenSSH 9.2 added an UnusedConnectionTimeout option that you might find
useful here. It allows connections without shell/login sessions to be
automatically terminated for inactivity after a configurable interval.

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