linux-kernel - Re: [PATCH net v3 2/2] security: implement sctp_assoc

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Date:   Tue, 15 Feb 2022 12:13:17 +0800
From:   Xin Long <lucien.xin@...il.com>
To:     Marcelo Ricardo Leitner <marcelo.leitner@...il.com>
Cc:     Jakub Kicinski <kuba@...nel.org>, Paul Moore <paul@...l-moore.com>,
        Ondrej Mosnacek <omosnace@...hat.com>,
        netdev <netdev@...r.kernel.org>,
        David Miller <davem@...emloft.net>,
        SElinux list <selinux@...r.kernel.org>,
        Richard Haines <richard_c_haines@...nternet.com>,
        Vlad Yasevich <vyasevich@...il.com>,
        Neil Horman <nhorman@...driver.com>,
        "open list:SCTP PROTOCOL" <linux-sctp@...r.kernel.org>,
        LSM List <linux-security-module@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Prashanth Prahlad <pprahlad@...hat.com>
Subject: Re: [PATCH net v3 2/2] security: implement sctp_assoc_established
 hook in selinux

On Tue, Feb 15, 2022 at 11:58 AM Marcelo Ricardo Leitner
<marcelo.leitner@...il.com> wrote:
>
>
>
> Em seg., 14 de fev. de 2022 21:54, Jakub Kicinski <kuba@...nel.org> escreveu:
>>
>> On Mon, 14 Feb 2022 17:14:04 -0500 Paul Moore wrote:
>> > If I can get an ACK from one of the SCTP and/or netdev folks I'll
>> > merge this into the selinux/next branch.
>>
>> No objections here FWIW, I'd defer the official acking to the SCTP
>> maintainers.
>
>
> None from my side either, but I really want to hear from Xin. He has worked on this since day 0.
>
Looks okay to me.

The difference from the old one is that: with
selinux_sctp_process_new_assoc() called in
selinux_sctp_assoc_established(), the client sksec->peer_sid is using
the first asoc's peer_secid, instead of the latest asoc's peer_secid.
And not sure if it will cause any problems when doing the extra check
sksec->peer_sid != asoc->peer_secid for the latest asoc and *returns
err*. But I don't know about selinux, I guess there must be a reason
from selinux side.

I will ACK on patch 0/2.

Thanks Ondrej for working on this patiently.