From: Florian Westphal <fw@strlen.de>
To: Wander Lairson Costa <wander@redhat.com>
Cc: Pablo Neira Ayuso <pablo@netfilter.org>,
Jozsef Kadlecsik <kadlec@netfilter.org>,
Florian Westphal <fw@strlen.de>,
"David S. Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
"open list:NETFILTER" <netfilter-devel@vger.kernel.org>,
"open list:NETFILTER" <coreteam@netfilter.org>,
"open list:NETWORKING [GENERAL]" <netdev@vger.kernel.org>,
open list <linux-kernel@vger.kernel.org>,
Lucas Leong <wmliang@infosec.exchange>,
stable@kernel.org
Subject: Re: [PATCH nf] netfilter/osf: avoid OOB read
Date: Thu, 31 Aug 2023 00:59:21 +0200 [thread overview]
Message-ID: <20230830225921.GA15759@breakpoint.cc> (raw)
In-Reply-To: <20230830205554.97083-2-wander@redhat.com>
Wander Lairson Costa <wander@redhat.com> wrote:
> The opt_num field is controlled by user mode and is not currently
> validated inside the kernel. An attacker can take advantage of this to
> trigger an OOB read and potentially leak information.
[..]
Can you send a v2 that rejects bogus nf_osf_user_finger structs?
nfnl_osf_add_callback() seems to be the right place to refuse it.
prev parent reply other threads:[~2023-08-30 23:00 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-08-30 20:55 [PATCH nf] netfilter/osf: avoid OOB read Wander Lairson Costa
2023-08-30 22:59 ` Florian Westphal [this message]
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