From: Konstantin Khorenko <khorenko@virtuozzo.com>
To: Vasileios Almpanis <vasileios.almpanis@virtuozzo.com>,
Mirian Shilakadze <mirian.shilakadze@virtuozzo.com>
Cc: devel@openvz.org
Subject: Re: [Devel] [PATCH vz10 0/3] ve/fs: make mount ownership follow the mount namespace
Date: Wed, 26 Aug 2026 17:30:01 +0200 [thread overview]
Message-ID: <2bf3c330-a553-428d-8a6d-46e3cf9cc8ae@virtuozzo.com> (raw)
In-Reply-To: <178704961442.266722.6134525770095478679.b4-review@b4>
On 8/18/26 12:40, Vasileios Almpanis wrote:
>>
> Generally LGTM. The only problematic scenario I see now that we gate
> host execution based on namespace is that we could have tmpfs with two
> mounts one in host and one in CT. CT can still tamper with things and on
> the fs and ve_check_trusted_file will still return true allowing us to
> execute on host. I don't thing this should be covered in this series as its
> irrelevant I just wanted to mention it in case other reviewers think we
> need to do something about it. If deemed necessary we could solve it
> in O(1) time, by using some superblock flag and checking against that
> in ve_check_trusted_file.
Absolutely agree, so we need to handle this scenario as well,
i have filed a separate bug for that:
https://virtuozzo.atlassian.net/browse/VSTOR-142982
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prev parent reply other threads:[~2026-08-26 15:31 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-08-17 7:16 Mirian Shilakadze
2026-08-17 7:16 ` [Devel] [PATCH vz10 1/3] ve/fs: unlink the mount namespace on the copy_mnt_ns() error path Mirian Shilakadze
2026-08-26 15:38 ` [Devel] [PATCH RHEL10 COMMIT] " Konstantin Khorenko
2026-08-17 7:16 ` [Devel] [PATCH vz10 2/3] ve/fs: transfer mount ownership when a mount enters another VE Mirian Shilakadze
2026-08-26 15:38 ` [Devel] [PATCH RHEL10 COMMIT] " Konstantin Khorenko
2026-08-17 7:16 ` [Devel] [PATCH vz10 3/3] ve/fs: take the owner of copied mounts from the namespace, not the task Mirian Shilakadze
2026-08-26 15:38 ` [Devel] [PATCH RHEL10 COMMIT] " Konstantin Khorenko
2026-08-18 10:40 ` [Devel] [PATCH vz10 0/3] ve/fs: make mount ownership follow the mount namespace Vasileios Almpanis
2026-08-26 15:30 ` Konstantin Khorenko [this message]
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