From: Greg KH <gregkh@linuxfoundation.org>
To: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Luis Chamberlain <mcgrof@kernel.org>,
viro@zeniv.linux.org.uk, rafael@kernel.org, jeyu@kernel.org,
jmorris@namei.org, keescook@chromium.org, paul@paul-moore.com,
stephen.smalley.work@gmail.com, eparis@parisplace.org,
nayna@linux.ibm.com, zohar@linux.ibm.com,
scott.branden@broadcom.com, dan.carpenter@oracle.com,
skhan@linuxfoundation.org, geert@linux-m68k.org,
tglx@linutronix.de, bauerman@linux.ibm.com, dhowells@redhat.com,
linux-integrity@vger.kernel.org, linux-fsdevel@vger.kernel.org,
kexec@lists.infradead.org, linux-security-module@vger.kernel.org,
selinux@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 2/3] security: add symbol namespace for reading file data
Date: Wed, 13 May 2020 18:09:36 +0200 [thread overview]
Message-ID: <20200513160936.GC1362525@kroah.com> (raw)
In-Reply-To: <87k11fonbk.fsf@x220.int.ebiederm.org>
On Wed, May 13, 2020 at 10:40:31AM -0500, Eric W. Biederman wrote:
> Luis Chamberlain <mcgrof@kernel.org> writes:
>
> > Certain symbols are not meant to be used by everybody, the security
> > helpers for reading files directly is one such case. Use a symbol
> > namespace for them.
> >
> > This will prevent abuse of use of these symbols in places they were
> > not inteded to be used, and provides an easy way to audit where these
> > types of operations happen as a whole.
>
> Why not just remove the ability for the firmware loader to be a module?
I agree, it's been a mess of build options to try to keep alive over
time.
> Is there some important use case that requires the firmware loader
> to be a module?
I don't think so anymore.
> We already compile the code in by default. So it is probably just
> easier to remove the modular support all together. Which would allow
> the export of the security hooks to be removed as well.
Agreed.
thanks,
greg k-h
next prev parent reply other threads:[~2020-05-13 16:09 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-13 15:21 [PATCH 0/3] fs: reduce export usage of kerne_read*() calls Luis Chamberlain
2020-05-13 15:21 ` [PATCH 1/3] fs: unexport kernel_read_file() Luis Chamberlain
2020-05-13 15:21 ` [PATCH 2/3] security: add symbol namespace for reading file data Luis Chamberlain
2020-05-13 15:40 ` Eric W. Biederman
2020-05-13 16:09 ` Greg KH [this message]
2020-05-13 16:16 ` Luis Chamberlain
2020-05-13 16:26 ` Greg KH
2020-05-13 18:07 ` Josh Triplett
2020-05-13 15:21 ` [PATCH 3/3] fs: move kernel_read*() calls to its own symbol namespace Luis Chamberlain
2020-05-13 16:08 ` Greg KH
2020-05-13 18:17 ` [PATCH 0/3] fs: reduce export usage of kerne_read*() calls Christoph Hellwig
2020-05-15 21:29 ` Luis Chamberlain
2020-05-18 6:22 ` Christoph Hellwig
2020-05-18 12:37 ` Mimi Zohar
2020-05-18 15:21 ` Kees Cook
2020-07-29 1:20 ` Luis Chamberlain
2020-05-22 22:24 ` Scott Branden
2020-05-22 23:04 ` Kees Cook
2020-05-22 23:25 ` Scott Branden
2020-05-24 2:52 ` Mimi Zohar
2020-06-05 18:15 ` Scott Branden
2020-06-05 18:37 ` Mimi Zohar
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