From: Alejandro Colomar <alx.manpages@gmail.com>
To: Helge Kreutzmann <debian@helgefjell.de>
Cc: mario.blaettermann@gmail.com, linux-man@vger.kernel.org
Subject: Re: Issue in man page user_namespaces.7
Date: Sun, 4 Dec 2022 21:20:02 +0100 [thread overview]
Message-ID: <d527cf65-0015-8deb-9855-8d693b3cae88@gmail.com> (raw)
In-Reply-To: <20221204090720.GA1027@Debian-50-lenny-64-minimal>
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On 12/4/22 10:07, Helge Kreutzmann wrote:
> Without further ado, the following was found:
>
> Issue: Text missing? in order to drop → in order to drop privileges?
From what I read, I think it wanted to say "drop groups".
Fixed. Thanks!
Cheers,
Alex
>
> "/* Linux 3.19 made a change in the handling of setgroups(2) and the\n"
> " \\(aqgid_map\\(aq file to address a security issue. The issue allowed\n"
> " *unprivileged* users to employ user namespaces in order to drop\n"
> " The upshot of the 3.19 changes is that in order to update the\n"
> " \\(aqgid_maps\\(aq file, use of the setgroups() system call in this\n"
> " user namespace must first be disabled by writing \"deny\" to one of\n"
> " the /proc/PID/setgroups files for this namespace. That is the\n"
> " purpose of the following function. */\n"
--
<http://www.alejandro-colomar.es/>
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next prev parent reply other threads:[~2022-12-04 20:20 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-12-04 9:07 Issue in man page user_namespaces.7 Helge Kreutzmann
2022-12-04 20:20 ` Alejandro Colomar [this message]
-- strict thread matches above, loose matches on Subject: below --
2023-03-11 17:13 Helge Kreutzmann
2023-03-11 23:25 ` Alejandro Colomar
2023-03-12 5:06 ` Helge Kreutzmann
2023-03-12 10:55 ` Alejandro Colomar
2023-01-22 19:31 Helge Kreutzmann
2023-01-22 19:31 Helge Kreutzmann
2023-01-22 21:16 ` Alejandro Colomar
2022-12-04 9:07 Helge Kreutzmann
2022-12-04 9:07 Helge Kreutzmann
2022-12-04 20:14 ` Alejandro Colomar
2022-12-04 9:07 Helge Kreutzmann
2022-12-04 20:15 ` Alejandro Colomar
2022-12-04 9:07 Helge Kreutzmann
2022-12-04 9:07 Helge Kreutzmann
2022-03-13 12:34 Helge Kreutzmann
2022-03-13 12:34 Helge Kreutzmann
2022-03-13 12:34 Helge Kreutzmann
2022-03-13 12:34 Helge Kreutzmann
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