linux-kernel - Re: [PATCH] tty: plug a use-after-free in TIOCGETD ioctl

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Message-ID: <568EA2B0.3010407@hurleysoftware.com>
Date:	Thu, 7 Jan 2016 09:38:56 -0800
From:	Peter Hurley <peter@...leysoftware.com>
To:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:	Mateusz Guzik <mguzik@...hat.com>, Jiri Slaby <jslaby@...e.com>,
	stable@...r.kernel.org, linux-kernel@...r.kernel.org,
	security@...nel.org, milos@...hat.com, linux-serial@...r.kernel.org
Subject: Re: [PATCH] tty: plug a use-after-free in TIOCGETD ioctl

On 01/07/2016 09:08 AM, Greg Kroah-Hartman wrote:
> On Thu, Jan 07, 2016 at 08:38:04AM -0800, Peter Hurley wrote:
>> On 01/07/2016 08:14 AM, Greg Kroah-Hartman wrote:
>>> Adding Peter and linux-serial to the list here, as Peter has been doing
>>> a ton of work in this area...
>>>
>>> Peter, does this seem sane with the tty locking rules?
>>>
>>> thanks,
>>>
>>> greg k-h
>>
>> No.
>>
>> Fix for this is right here:
>> http://lkml.iu.edu/hypermail/linux/kernel/1511.3/03045.html
> 
> Ah, I thought I had seen this before, thanks for the reminder :)
> 
> But, I didn't apply that series for some reason, was it waiting on
> something before that?  Or did I just miss it with the holliday break?

That series is good to go, and in fact fixes a rash of crash
reports which occur on kernels since 3.10, but just started showing
up now (triggered by some interaction between consoles over terminal servers
and systemd).

I didn't bother you about it because it seemed like you were busy.
Do you need me to resend this series (and the other 6 series' plus
misc fixes)?

Regards,
Peter Hurley

PS - I meant to get to plumbers' last summer but overdue work
kept me from going. This would have been easier with a tree to pull from.