From: Tejun Heo <tj@kernel.org>
To: "Jérémy Jean" <Jeremy.Jean@oss.cyber.gouv.fr>
Cc: "Johannes Weiner" <hannes@cmpxchg.org>,
"Michal Koutný" <mkoutny@suse.com>,
brads@mainlining.org, cgroups@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2] cgroup: prevent css_set UAF after namespace publication
Date: Thu, 24 Sep 2026 10:52:45 -1000 [thread overview]
Message-ID: <b54f443b33e1637e31a4db8d56c11a1c@kernel.org> (raw)
In-Reply-To: <20260924111036.3330268-2-Jeremy.Jean@oss.cyber.gouv.fr>
Hello, Jeremy.
On Thu, Sep 24, 2026 at 11:10:37AM +0000, Jeremy Jean wrote:
> copy_cgroup_ns() sets the root of a new cgroup namespace to the parent's
> css_set. When the child is created in a different cgroup,
> cgroup_post_fork() replaces that root with the child's css_set after the
> namespace is visible.
Looks good to me.
Acked-by: Tejun Heo <tj@kernel.org>
Can you repost with the namespace maintainers cc'd (Christian Brauner and
the NAMESPACES entry in MAINTAINERS)? I'd like their acks too.
Thanks.
--
tejun
next prev parent reply other threads:[~2026-09-24 20:54 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-24 11:10 [PATCH v2] cgroup: prevent css_set UAF after namespace publication Jérémy Jean
2026-09-24 20:52 ` Tejun Heo [this message]
2026-09-24 20:57 ` Bradley Morgan
-- strict thread matches above, loose matches on Subject: below --
2026-09-24 21:01 Jérémy Jean
2026-09-24 21:09 ` Bradley Morgan
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=b54f443b33e1637e31a4db8d56c11a1c@kernel.org \
--to=tj@kernel.org \
--cc=Jeremy.Jean@oss.cyber.gouv.fr \
--cc=brads@mainlining.org \
--cc=cgroups@vger.kernel.org \
--cc=hannes@cmpxchg.org \
--cc=linux-kernel@vger.kernel.org \
--cc=mkoutny@suse.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.