linux-kernel - Re: [PATCH v1 0/4] [RFC] Implement Trampoline File Descriptor

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Message-ID: <a909e0b0-0d82-d869-fe49-cc974680ac23@linux.microsoft.com>
Date:   Tue, 28 Jul 2020 12:08:48 -0500
From:   "Madhavan T. Venkataraman" <madvenka@...ux.microsoft.com>
To:     James Morris <jmorris@...ei.org>,
        Casey Schaufler <casey@...aufler-ca.com>
Cc:     kernel-hardening@...ts.openwall.com, linux-api@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-fsdevel@...r.kernel.org, linux-integrity@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        linux-security-module@...r.kernel.org, oleg@...hat.com,
        x86@...nel.org
Subject: Re: [PATCH v1 0/4] [RFC] Implement Trampoline File Descriptor



On 7/28/20 12:05 PM, James Morris wrote:
> On Tue, 28 Jul 2020, Casey Schaufler wrote:
>
>> You could make a separate LSM to do these checks instead of limiting
>> it to SELinux. Your use case, your call, of course.
> It's not limited to SELinux. This is hooked via the LSM API and 
> implementable by any LSM (similar to execmem, execstack etc.)

Yes. I have an implementation that I am testing right now that
defines the hook for exectramp and implements it for
SELinux. That is why I mentioned SELinux.

Madhavan