From: sashiko-bot@kernel.org
To: "Johan Hovold" <johan@kernel.org>
Cc: linux-usb@vger.kernel.org
Subject: Re: [PATCH] USB: serial: mct_u232: fix NULL-deref on open() failure
Date: Fri, 06 Nov 2026 08:06:17 +0000 [thread overview]
Message-ID: <sashiko-outbox-201021@kernel.org> (raw)
In-Reply-To: <20261106080155.1967097-1-johan@kernel.org>
> The driver uses a second interrupt endpoint for reading but still
> dereferences the port bulk-in URB pointer, which is no longer overridden
> by the driver, in an error path.
>
> Fix the dev_err() on failure to submit the read interrupt URB to avoid
> dereferencing a NULL-pointer.
>
> Fixes: 35807187e4b3 ("USB: mct_u232: clean up read implementation")
> Reported-by: syzbot+58b2d8b19cd6761a395b@syzkaller.appspotmail.com
> Closes: https://lore.kernel.org/6aed834c.dadc8e63.45095.0003.GAE@google.com
> Cc: stable@vger.kernel.org # 3.10
> Signed-off-by: Johan Hovold <johan@kernel.org>
Sashiko has reviewed this patch and found no issues.
--
Sashiko AI review · https://sashiko.dev/#/patchset/20261106080155.1967097-1-johan@kernel.org?part=1
prev parent reply other threads:[~2026-11-06 8:06 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-11-06 8:01 [PATCH] USB: serial: mct_u232: fix NULL-deref on open() failure Johan Hovold
2026-11-06 8:06 ` sashiko-bot [this message]
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