From: Demi Marie Obenour <demiobenour@gmail.com>
To: Tingmao Wang <m@maowtm.org>
Cc: "Günther Noack" <gnoack3000@gmail.com>,
"Mickaël Salaün" <mic@digikod.net>,
"Paul Moore" <paul@paul-moore.com>,
linux-security-module@vger.kernel.org,
"Justin Suess" <utilityemal77@gmail.com>,
"Samasth Norway Ananda" <samasth.norway.ananda@oracle.com>,
"Matthieu Buffet" <matthieu@buffet.re>,
"Mikhail Ivanov" <ivanov.mikhail1@huawei-partners.com>,
konstantin.meskhidze@huawei.com, "Alyssa Ross" <hi@alyssa.is>,
"Jann Horn" <jannh@google.com>,
"Tahera Fahimi" <fahimitahera@gmail.com>
Subject: Re: [RFC PATCH 0/5] landlock: Pathname-based UNIX connect() control
Date: Thu, 1 Jan 2026 17:44:51 -0500 [thread overview]
Message-ID: <1d36b2ee-b967-42d7-a6c2-e5b1602a512f@gmail.com> (raw)
In-Reply-To: <73c5509a-5daa-4ea5-ab9f-e24a59786f6d@maowtm.org>
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On 1/1/26 17:34, Tingmao Wang wrote:
> On 1/1/26 22:14, Demi Marie Obenour wrote:
>> [...]
>> Does this leave directory traversal as the only missing Landlock
>> filesystem access control? Ideally Landlock could provide the same
>> isolation from the filesystem that mount namespaces do.
>
> I think that level of isolation would require path walk control - see:
> https://github.com/landlock-lsm/linux/issues/9
>
> (Landlock also doesn't currently control some metadata operations - see
> the warning at the end of the "Filesystem flags" section in [1])
>
> [1]: https://docs.kernel.org/6.18/userspace-api/landlock.html#filesystem-flags
Could this replace all of the existing hooks?
--
Sincerely,
Demi Marie Obenour (she/her/hers)
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next prev parent reply other threads:[~2026-01-01 22:44 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-01-01 13:40 [RFC PATCH 0/5] landlock: Pathname-based UNIX connect() control Günther Noack
2026-01-01 13:40 ` [RFC PATCH 1/5] landlock/selftests: add a missing close(srv_fd) call Günther Noack
2026-01-01 13:40 ` [RFC PATCH 2/5] landlock: Control connections to pathname UNIX sockets by path Günther Noack
2026-01-01 13:41 ` [RFC PATCH 3/5] samples/landlock: Add support for LANDLOCK_ACCESS_FS_CONNECT_UNIX Günther Noack
2026-01-01 19:30 ` Justin Suess
2026-01-01 22:07 ` Tingmao Wang
2026-01-01 22:11 ` Demi Marie Obenour
2026-01-01 22:19 ` Tingmao Wang
2026-01-01 22:36 ` Demi Marie Obenour
2026-01-01 22:38 ` Justin Suess
2026-01-01 22:39 ` Demi Marie Obenour
2026-01-02 9:53 ` Günther Noack
2026-01-01 13:41 ` [RFC PATCH 4/5] landlock/selftests: test LANDLOCK_ACCESS_FS_CONNECT_UNIX Günther Noack
2026-01-01 13:41 ` [RFC PATCH 5/5] landlock: Document LANDLOCK_ACCESS_FS_UNIX_CONNECT Günther Noack
2026-01-01 22:14 ` [RFC PATCH 0/5] landlock: Pathname-based UNIX connect() control Demi Marie Obenour
2026-01-01 22:34 ` Tingmao Wang
2026-01-01 22:44 ` Demi Marie Obenour [this message]
2026-01-02 10:16 ` Günther Noack
2026-01-02 10:25 ` Günther Noack
2026-01-02 10:27 ` Demi Marie Obenour
2026-01-02 10:50 ` Günther Noack
2026-01-02 18:37 ` Demi Marie Obenour
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