linux-kernel - Re: [PATCH ghak25 v6a] audit: add subj creds to NETFILTER

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Message-ID: <CAHC9VhT9MBseD87hOq-9FN7-fdKEPn5bcvUYiX3S3Nu4EJwiig@mail.gmail.com>
Date:   Wed, 20 May 2020 18:24:23 -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, sgrubb@...hat.com,
        Ondrej Mosnacek <omosnace@...hat.com>, fw@...len.de,
        twoerner@...hat.com, Eric Paris <eparis@...isplace.org>,
        tgraf@...radead.org
Subject: Re: [PATCH ghak25 v6a] audit: add subj creds to NETFILTER_CFG record
 to cover async unregister

On Wed, May 20, 2020 at 2:47 PM Richard Guy Briggs <rgb@...hat.com> 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.
>
> Here are two sample orphaned records:
>
>   type=NETFILTER_CFG msg=audit(2020-05-20 12:14:36.505:5) : table=filter family=ipv4 entries=0 op=register pid=1 subj=kernel comm=swapper/0
>
>   type=NETFILTER_CFG msg=audit(2020-05-20 12:15:27.701:301) : table=nat family=bridge entries=0 op=unregister pid=30 subj=system_u:system_r:kernel_t:s0 comm=kworker/u4:1
>
> Signed-off-by: Richard Guy Briggs <rgb@...hat.com>

Merged into audit/next, thanks Richard.

-- 
paul moore
www.paul-moore.com