linux-kernel - Re: [RESEND PATCH v18 0/4] overlayfs override

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Message-ID: <20201022051914.GI857@sol.localdomain>
Date:   Wed, 21 Oct 2020 22:19:14 -0700
From:   Eric Biggers <ebiggers@...nel.org>
To:     Mark Salyzyn <salyzyn@...roid.com>
Cc:     linux-kernel@...r.kernel.org, kernel-team@...roid.com,
        Miklos Szeredi <miklos@...redi.hu>,
        Jonathan Corbet <corbet@....net>,
        Vivek Goyal <vgoyal@...hat.com>,
        "Eric W . Biederman" <ebiederm@...ssion.com>,
        Amir Goldstein <amir73il@...il.com>,
        Randy Dunlap <rdunlap@...radead.org>,
        Stephen Smalley <sds@...ho.nsa.gov>,
        John Stultz <john.stultz@...aro.org>,
        linux-doc@...r.kernel.org, linux-fsdevel@...r.kernel.org,
        linux-unionfs@...r.kernel.org,
        linux-security-module@...r.kernel.org, selinux@...r.kernel.org
Subject: Re: [RESEND PATCH v18 0/4] overlayfs override_creds=off & nested get
 xattr fix

On Wed, Oct 21, 2020 at 08:18:59AM -0700, Mark Salyzyn wrote:
> Mark Salyzyn (3):
>   Add flags option to get xattr method paired to __vfs_getxattr
>   overlayfs: handle XATTR_NOSECURITY flag for get xattr method
>   overlayfs: override_creds=off option bypass creator_cred
> 
> Mark Salyzyn + John Stultz (1):
>   overlayfs: inode_owner_or_capable called during execv
> 
> The first three patches address fundamental security issues that should
> be solved regardless of the override_creds=off feature.
> 
> The fourth adds the feature depends on these other fixes.

FYI, I didn't receive patch 4, and neither https://lkml.kernel.org/linux-fsdevel
nor https://lkml.kernel.org/linux-unionfs have it either.

- Eric