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From: Greg KH <gregkh@linuxfoundation.org>
To: Abhishek Shah <abhishek.shah@columbia.edu>
Cc: jirislaby@kernel.org, linux-kernel@vger.kernel.org,
	bjohannesmeyer@gmail.com, jakobkoschel@gmail.com,
	xiam0nd.tong@gmail.com, Gabriel Ryan <gabe@cs.columbia.edu>
Subject: Re: data-race in set_console / vt_ioctl
Date: Fri, 19 Aug 2022 09:06:27 +0200	[thread overview]
Message-ID: <Yv82cwVT9MXX2nx/@kroah.com> (raw)
In-Reply-To: <CAEHB249P1XurGDtvfjzkEzP4qWEaL6FG4ENM=PYjk7-JZfnKrQ@mail.gmail.com>

On Thu, Aug 18, 2022 at 09:17:00PM -0400, Abhishek Shah wrote:
> Hi all,
> 
> We found a data race involving the *vt_dont_switch* variable. Upon further
> investigation, we see that this racing variable controls whether the
> callbacks will be scheduled in the console (see here
> <https://elixir.bootlin.com/linux/v5.18-rc5/source/drivers/tty/vt/vt.c#L3032>),
> but we are not sure of its security implications. Please let us know what
> you think.

Again, any patch that you might have to resolve this would be great, as
that's the easiest thing to review.

thanks,

greg k-h

       reply	other threads:[~2022-08-19  7:06 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <CAEHB249P1XurGDtvfjzkEzP4qWEaL6FG4ENM=PYjk7-JZfnKrQ@mail.gmail.com>
2022-08-19  7:06 ` Greg KH [this message]
2022-08-21  8:46   ` data-race in set_console / vt_ioctl Greg KH
2022-08-22 20:57     ` Gabriel Ryan

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