Bug#539352: /etc/init.d/mountkernfs.sh: Please mount debugfs when available in the kernel

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From	Salvatore Bonaccorso <carnil@debian.org>
Newsgroups	linux.debian.bugs.dist, linux.debian.kernel
Subject	Bug#539352: /etc/init.d/mountkernfs.sh: Please mount debugfs when available in the kernel
Date	Sat, 16 Nov 2024 15:00:01 +0100
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X-Original-To	Mark Hindley <mark@hindley.org.uk>
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X-Original-Cc	Debian Security Team <team@security.debian.org>, Thorsten Glaser <tg@debian.org>, 539352@bugs.debian.org, Roger Lynn <Roger@rilynn.me.uk>, Debian kernel maintainers <debian-kernel@lists.debian.org>
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Hi,

On Mon, Nov 11, 2024 at 07:19:40PM +0000, Mark Hindley wrote:
> Hi Debian Security Team,
> 
> Could I have your input on this please? An old bug has been reopened asking for
> initscripts to mount debugfs by default. It was closed for several years, but
> the workaround has now disappeared.
> 
> In the original thread, concerns were raised about mounting debugfs in all cases
> both for security and unnecessary resource usage[1].  Those have been expressed
> again now.

We hat short discussion about it our weekly Kernel team meeting, and
should be noted that systemd does that already. We do not see an
direct problem to do it as it is restricted to root.

https://meetbot.debian.net/debian-kernel/2024/debian-kernel.2024-11-13-20.00.html

Regards,
Salvatore

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Bug#539352: /etc/init.d/mountkernfs.sh: Please mount debugfs when available in the kernel Salvatore Bonaccorso <carnil@debian.org> - 2024-11-16 15:00 +0100
  Bug#539352: /etc/init.d/mountkernfs.sh: Please mount debugfs when available in the kernel Roger Lynn <Roger@rilynn.me.uk> - 2024-11-19 01:00 +0100

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