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Date: Thu, 28 Mar 2024 09:38:41 +0100
From: Jakub Wilk <>
To: <>
Subject: Re: Re: CVE-2024-28085: Escape sequence injection in
 util-linux wall

*, 2024-03-27 13:57:

This file is used by sysvinit when mounting /dev/pts.

systemd doesn't use it. It mounts /dev/pts with mode=620 by default.


As far as I can see, TTYPERM from login.defs is used only by login(1) 
and sometimes┬╣ by su(1). If you log in through SSH, or run xterm(1) or 
screen(1) or... it won't have any effect.

It's all awful and undocumented.

   ("su: (pty) change owner and mode for pty")

Jakub Wilk

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