linux-kernel - Re: [PATCH ghak25 v6] audit: add subj creds to NETFILTER

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Date:   Wed, 20 May 2020 14:40:45 -0400
From:   Paul Moore <paul@...l-moore.com>
To:     Richard Guy Briggs <rgb@...hat.com>
Cc:     Linux-Audit Mailing List <linux-audit@...hat.com>,
        LKML <linux-kernel@...r.kernel.org>,
        netfilter-devel@...r.kernel.org, twoerner@...hat.com,
        Eric Paris <eparis@...isplace.org>, fw@...len.de,
        tgraf@...radead.org
Subject: Re: [PATCH ghak25 v6] audit: add subj creds to NETFILTER_CFG record
 to cover async unregister

On Wed, May 20, 2020 at 12:55 PM Richard Guy Briggs <rgb@...hat.com> wrote:
> On 2020-05-20 12:51, Richard Guy Briggs wrote:
> > Some table unregister actions seem to be initiated by the kernel to
> > garbage collect unused tables that are not initiated by any userspace
> > actions.  It was found to be necessary to add the subject credentials to
> > cover this case to reveal the source of these actions.  A sample record:
> >
> > The uid, auid, tty, ses and exe fields have not been included since they
> > are in the SYSCALL record and contain nothing useful in the non-user
> > context.
> >
> >   type=NETFILTER_CFG msg=audit(2020-03-11 21:25:21.491:269) : table=nat family=bridge entries=0 op=unregister pid=153 subj=system_u:system_r:kernel_t:s0 comm=kworker/u4:2

FWIW, that record looks good.

> > Signed-off-by: Richard Guy Briggs <rgb@...hat.com>
>
> Self-NACK.  I forgot to remove cred and tty declarations.

-- 
paul moore
www.paul-moore.com