From: Florian Westphal <fw@strlen.de>
To: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Pablo Neira Ayuso <pablo@netfilter.org>,
Florian Westphal <fw@strlen.de>, netdev <netdev@vger.kernel.org>,
netfilter-devel@vger.kernel.org
Subject: Re: [PATCH v2 net] netfilter: x_tables: avoid out-of-bounds reads in xt_request_find_{match|target}
Date: Thu, 25 Jan 2018 07:09:38 +0100 [thread overview]
Message-ID: <20180125060938.GD14192@breakpoint.cc> (raw)
In-Reply-To: <1516842969.3715.41.camel@gmail.com>
Eric Dumazet <eric.dumazet@gmail.com> wrote:
> From: Eric Dumazet <edumazet@google.com>
>
> It looks like syzbot found its way into netfilter territory.
>
> Issue here is that @name comes from user space and might
> not be null terminated.
>
> Out-of-bound reads happen, KASAN is not happy.
>
> v2 added similar fix for xt_request_find_target(),
> as Florian advised.
>
> Signed-off-by: Eric Dumazet <edumazet@google.com>
> Reported-by: syzbot <syzkaller@googlegroups.com>
Thanks a lot Eric!
Acked-by: Florian Westphal <fw@strlen.de>
next prev parent reply other threads:[~2018-01-25 6:09 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-01-24 22:49 [PATCH net] netfilter: x_tables: avoid out-of-bounds reads in xt_request_find_match() Eric Dumazet
2018-01-24 23:19 ` Florian Westphal
2018-01-24 23:50 ` Pablo Neira Ayuso
2018-01-25 0:13 ` Pablo Neira Ayuso
2018-01-25 1:13 ` Eric Dumazet
2018-01-25 1:16 ` [PATCH v2 net] netfilter: x_tables: avoid out-of-bounds reads in xt_request_find_{match|target} Eric Dumazet
2018-01-25 6:09 ` Florian Westphal [this message]
2018-01-25 11:33 ` Pablo Neira Ayuso
2018-01-24 23:49 ` [PATCH net] netfilter: x_tables: avoid out-of-bounds reads in xt_request_find_match() Pablo Neira Ayuso
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