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From: Pablo Neira Ayuso <pablo@netfilter.org>
To: Richard Guy Briggs <rgb@redhat.com>
Cc: Jones Desougi <jones.desougi+netfilter@gmail.com>,
	Phil Sutter <phil@nwl.cc>, Florian Westphal <fw@strlen.de>,
	LKML <linux-kernel@vger.kernel.org>,
	Linux-Audit Mailing List <linux-audit@redhat.com>,
	netfilter-devel@vger.kernel.org, twoerner@redhat.com,
	Eric Paris <eparis@parisplace.org>,
	tgraf@infradead.org, dan.carpenter@oracle.com
Subject: Re: [PATCH v5] audit: log nftables configuration change events once per table
Date: Wed, 31 Mar 2021 22:56:39 +0200
Message-ID: <20210331205639.GA4972@salvia> (raw)
In-Reply-To: <20210331205310.GA3141668@madcap2.tricolour.ca>

On Wed, Mar 31, 2021 at 04:53:10PM -0400, Richard Guy Briggs wrote:
> On 2021-03-31 22:22, Pablo Neira Ayuso wrote:
> > On Fri, Mar 26, 2021 at 01:38:59PM -0400, Richard Guy Briggs wrote:
> > > Reduce logging of nftables events to a level similar to iptables.
> > > Restore the table field to list the table, adding the generation.
> > > 
> > > Indicate the op as the most significant operation in the event.
> > 
> > There's a UAF, Florian reported. I'm attaching an incremental fix.
> > 
> > nf_tables_commit_audit_collect() refers to the trans object which
> > might have been already released.
> 
> Got it.  Thanks Pablo.  I didn't see it when running nft-test.py Where
> was it reported?

CONFIG_KASAN.

> Here I tried to stay out of the way by putting that
> call at the end of the loop but that was obviously a mistake in
> hindsight.  :-)

No problem, I'll squash this incremental fix into your audit patch.

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Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-03-26 17:38 Richard Guy Briggs
2021-03-29  0:50 ` Paul Moore
2021-03-30 22:53   ` Pablo Neira Ayuso
2021-03-31  0:50     ` Paul Moore
2021-03-31 20:22 ` Pablo Neira Ayuso
2021-03-31 20:53   ` Richard Guy Briggs
2021-03-31 20:56     ` Pablo Neira Ayuso [this message]
2021-03-31 20:46 ` Pablo Neira Ayuso
2021-03-31 20:55   ` Richard Guy Briggs
2021-04-01 13:24 ` Phil Sutter
2021-04-01 13:34   ` Richard Guy Briggs

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