linux-kernel - Re: [PATCH v2] overlayfs: caller_credentials option bypass creator

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Message-ID: <afbcabfc-2e25-d2fc-107a-5418b5e0806f@android.com>
Date:   Mon, 18 Jun 2018 12:32:13 -0700
From:   Mark Salyzyn <salyzyn@...roid.com>
To:     linux-kernel@...r.kernel.org
Cc:     Miklos Szeredi <miklos@...redi.hu>,
        Jonathan Corbet <corbet@....net>,
        Vivek Goyal <vgoyal@...hat.com>, linux-unionfs@...r.kernel.org,
        linux-doc@...r.kernel.org
Subject: Re: [PATCH v2] overlayfs: caller_credentials option bypass
 creator_cred

On 06/18/2018 12:27 PM, Mark Salyzyn wrote:
> All accesses to the lower filesystems reference the creator (mount)
> context.  This is a security issue as the user context does not
> overlay the creator context.
<sigh> been typing overlay far too many times, muscle memory struck!

"overlap the creator context."

-- Mark