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From: Rondreis <linhaoguo86@gmail.com>
To: Greg KH <gregkh@linuxfoundation.org>
Cc: linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org,
	johan@kernel.org
Subject: Re: KASAN: use-after-free Write in keyspan_close
Date: Wed, 21 Sep 2022 23:45:17 +0800	[thread overview]
Message-ID: <CAB7eexKKeOxgZ6uh7WXJcui71_uOMeYr8+=Hfb0-Gi4h8JMmEw@mail.gmail.com> (raw)
In-Reply-To: <YynnT7/mnzJVn7iz@kroah.com>

Thank you for your reply!

This is a “fake” device. We emulated some functions with the built-in
gadget module as a virtual device side for fuzzing. It can pass through
the matching phase and, to some extent the probing phase.
As you said, the configuration options are correct.

After a successful attachment, we extracted the file_operations
of the device files on both sides to find the corresponding system calls.
Later, by fuzzing the dual-sided device with system calls, it is
equivalent to considering data threats from both peripheral and user space.

We are open to any suggestions and hope to submit a patch capable
of fixing this bug in the near future.

Best Regards,
Rondreis

  reply	other threads:[~2022-09-21 15:45 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-09-20 14:47 KASAN: use-after-free Write in keyspan_close Rondreis
2022-09-20 16:16 ` Greg KH
2022-09-21 15:45   ` Rondreis [this message]
2022-09-21 16:20     ` Greg KH
2022-09-29 11:41 ` Oliver Neukum

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