netdev - Re: [PATCH v3 0/9] bpf-lsm: Extend interoperability with IMA

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Date:   Thu, 03 Mar 2022 14:13:24 -0500
From:   Mimi Zohar <zohar@...ux.ibm.com>
To:     KP Singh <kpsingh@...nel.org>
Cc:     Alexei Starovoitov <alexei.starovoitov@...il.com>,
        Roberto Sassu <roberto.sassu@...wei.com>, shuah@...nel.org,
        ast@...nel.org, daniel@...earbox.net, andrii@...nel.org,
        yhs@...com, revest@...omium.org, gregkh@...uxfoundation.org,
        linux-integrity@...r.kernel.org,
        linux-security-module@...r.kernel.org,
        linux-kselftest@...r.kernel.org, bpf@...r.kernel.org,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        Florent Revest <revest@...gle.com>,
        Kees Cook <keescook@...omium.org>
Subject: Re: [PATCH v3 0/9] bpf-lsm: Extend interoperability with IMA

On Thu, 2022-03-03 at 19:14 +0100, KP Singh wrote:
> 
> Even Robert's use case is to implement IMA policies in BPF this is still
> fundamentally different from IMA doing integrity measurement for BPF
> and blocking this patch-set on the latter does not seem rational and
> I don't see how implementing integrity for BPF would avoid your
> concerns.

eBPF modules are an entire class of files currently not being measured,
audited, or appraised.  This is an integrity gap that needs to be
closed.  The purpose would be to at least measure and verify the
integrity of the eBPF module that is going to be used in lieu of
traditional IMA.

-- 
thanks,

Mimi