From: Alexander Lobakin <aleksander.lobakin@intel.com>
To: Dan Carpenter <dan.carpenter@linaro.org>
Cc: Jakub Kicinski <kuba@kernel.org>,
Louis Peens <louis.peens@corigine.com>,
Andrew Lunn <andrew+netdev@lunn.ch>,
"David S. Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Paolo Abeni <pabeni@redhat.com>,
"Quentin Monnet" <qmo@kernel.org>,
Daniel Borkmann <daniel@iogearbox.net>, <bpf@vger.kernel.org>,
<oss-drivers@corigine.com>, <netdev@vger.kernel.org>,
<linux-kernel@vger.kernel.org>, <kernel-janitors@vger.kernel.org>
Subject: Re: [PATCH net] nfp: bpf: prevent integer overflow in nfp_bpf_event_output()
Date: Mon, 13 Jan 2025 13:32:11 +0100 [thread overview]
Message-ID: <1ba87a40-5851-4877-a539-e065c3a8a433@intel.com> (raw)
In-Reply-To: <6074805b-e78d-4b8a-bf05-e929b5377c28@stanley.mountain>
From: Dan Carpenter <dan.carpenter@linaro.org>
Date: Mon, 13 Jan 2025 09:18:39 +0300
> The "sizeof(struct cmsg_bpf_event) + pkt_size + data_size" math could
> potentially have an integer wrapping bug on 32bit systems. Check for
Not in practice I suppose? Do we need to fix "never" bugs?
> this and return an error.
>
> Fixes: 9816dd35ecec ("nfp: bpf: perf event output helpers support")
> Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Thanks,
Olek
next prev parent reply other threads:[~2025-01-13 12:32 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-01-13 6:18 [PATCH net] nfp: bpf: prevent integer overflow in nfp_bpf_event_output() Dan Carpenter
2025-01-13 12:32 ` Alexander Lobakin [this message]
2025-01-14 10:45 ` Dan Carpenter
2025-01-14 17:17 ` Alexander Lobakin
2025-01-14 18:43 ` Dan Carpenter
2025-01-15 10:22 ` Alexander Lobakin
2025-01-14 23:10 ` patchwork-bot+netdevbpf
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