From: Johan Hovold <johan@kernel.org>
To: Johan Hovold <johan@kernel.org>
Cc: Alan Stern <stern@rowland.harvard.edu>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH 0/2] USB: serial: fix port tear down use-after-free
Date: Thu, 20 Aug 2026 16:54:00 +0200 [thread overview]
Message-ID: <20260820145402.434447-1-johan@kernel.org> (raw)
When addressing a port probe ordering issue in digi_acceleport recently
I realised that we have a corresponding general problem during
disconnect, but I didn't have time to address it straight away.
Now syzbot has managed to trigger one of its symptoms and people have
already started submitting incomplete band-aids so here is a proper
fix.
When testing the fix I also noticed that we have an ordering issue when
deregistering drivers that can result in similar use-after-free.
Johan
Johan Hovold (2):
USB: serial: fix port tear down use-after-free
USB: serial: fix driver deregistration order
drivers/usb/serial/usb-serial.c | 19 +++++++++++++++----
1 file changed, 15 insertions(+), 4 deletions(-)
--
2.54.0
next reply other threads:[~2026-08-20 14:55 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-08-20 14:54 Johan Hovold [this message]
2026-08-20 14:54 ` [PATCH 1/2] USB: serial: fix port tear down use-after-free Johan Hovold
2026-08-20 14:54 ` [PATCH 2/2] USB: serial: fix driver deregistration order Johan Hovold
2026-08-20 15:47 ` Alan Stern
2026-08-20 15:08 ` [PATCH 0/2] USB: serial: fix port tear down use-after-free Greg Kroah-Hartman
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