linux-kernel - Re: [PATCH 2/2] time: adjtimex: Validate the ADJ

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Message-ID: <20150107182855.GB7699@kroah.com>
Date:	Wed, 7 Jan 2015 10:28:55 -0800
From:	Greg KH <gregkh@...uxfoundation.org>
To:	John Stultz <john.stultz@...aro.org>
Cc:	lkml <linux-kernel@...r.kernel.org>,
	Sasha Levin <sasha.levin@...cle.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...nel.org>,
	stable <stable@...r.kernel.org>,
	Andy Lutomirski <luto@...capital.net>
Subject: Re: [PATCH 2/2] time: adjtimex: Validate the ADJ_FREQUENCY values

On Wed, Jan 07, 2015 at 10:12:20AM -0800, John Stultz wrote:
> From: Sasha Levin <sasha.levin@...cle.com>
> 
> Verify that the frequency value from userspace is valid and makes sense.
> 
> Unverified values can cause overflows later on.
> 
> Cc: Thomas Gleixner <tglx@...utronix.de>
> Cc: Ingo Molnar <mingo@...nel.org>
> Cc: stable <stable@...r.kernel.org>
> Cc: Andy Lutomirski <luto@...capital.net>
> Signed-off-by: Sasha Levin <sasha.levin@...cle.com>
> [jstultz: Fix up bug for negative values and drop redunent cap check]
> Signed-off-by: John Stultz <john.stultz@...aro.org>
> ---
>  kernel/time/ntp.c | 7 +++++++
>  1 file changed, 7 insertions(+)

<formletter>

This is not the correct way to submit patches for inclusion in the
stable kernel tree.  Please read Documentation/stable_kernel_rules.txt
for how to do this properly.

</formletter>
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