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From: "Dae R. Jeong" <threeearcat@gmail.com>
To: Eric Dumazet <edumazet@google.com>
Cc: David Miller <davem@davemloft.net>,
	Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
	netdev <netdev@vger.kernel.org>,
	LKML <linux-kernel@vger.kernel.org>
Subject: Re: KASAN: use-after-free Read in cfusbl_device_notify
Date: Fri, 24 Jun 2022 15:25:15 +0900	[thread overview]
Message-ID: <YrVYywPFYiqWJo4a@archdragon> (raw)
In-Reply-To: <CANn89iKLpGamedvzZjnhpNUUpPJ7ueiGo62DH0XM+omQvhr9HA@mail.gmail.com>

On Fri, Jun 24, 2022 at 08:15:54AM +0200, Eric Dumazet wrote:
> On Fri, Jun 24, 2022 at 8:08 AM Dae R. Jeong <threeearcat@gmail.com> wrote:
> >
> > Hello,
> >
> > We observed a crash "KASAN: use-after-free Read in cfusbl_device_notify" during fuzzing.
> 
> This is a known problem.
> 
> Some drivers do not like NETDEV_UNREGISTER being delivered multiple times.
>
> Make sure in your fuzzing to have NET_DEV_REFCNT_TRACKER=y
> 
> Thanks.

Our config already have CONFIG_NET_DEV_REFCNT_TRACKER=y.
Anyway, this UAF report seems not interesting.

Thank you for your quick reply.


Best regards,
Dae R. Jeong.

  reply	other threads:[~2022-06-24  6:25 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-06-24  6:07 KASAN: use-after-free Read in cfusbl_device_notify Dae R. Jeong
2022-06-24  6:15 ` Eric Dumazet
2022-06-24  6:25   ` Dae R. Jeong [this message]
2022-06-24  6:32     ` Eric Dumazet
2022-06-24  6:56       ` Dae R. Jeong

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