From: Denis Arefev <arefev@swemel.ru>
To: syzbot@kernel.org
Cc: gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org,
linux-usb@vger.kernel.org, nogikh@google.com,
stern@rowland.harvard.edu, syzbot@lists.linux.dev,
syzkaller-bugs@googlegroups.com, wangjinchao600@gmail.com
Subject: Re: [PATCH] usb: gadget: dummy_hcd: prevent unbind via sysfs
Date: Thu, 1 Oct 2026 13:37:46 +0300 [thread overview]
Message-ID: <20261001103746.11108-1-arefev@swemel.ru> (raw)
In-Reply-To: <18ec3122-7566-49e5-9964-1028857405b1@mail.kernel.org>
Hello.
I would like to gently ping regarding this patch.
It addresses a clear null-pointer dereference vulnerability in the dummy_hcd driver
reported by syzbot, which could potentially lead to a use-after-free race condition
under certain scenarios. Disabling sysfs unbind attributes via `.suppress_bind_attrs = true`
seems to be the most robust way to synchronize the lifecycles of dummy_hcd and dummy_udc.
Are there any concerns or further changes required to get this patch accepted?
Thank you for your time!
Best regards,
Denis Arefev <arefev@swemel.ru>
prev parent reply other threads:[~2026-10-01 10:44 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-07-29 12:25 [PATCH] usb: gadget: dummy_hcd: prevent unbind via sysfs syzbot
2026-07-29 13:54 ` Alan Stern
2026-10-01 10:37 ` Denis Arefev [this message]
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