linux-kernel - RE: [PATCH 01/13] ACPI/IPMI: Fix potential response buffer overflow

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Date:	Wed, 24 Jul 2013 00:21:42 +0000
From:	"Zheng, Lv" <lv.zheng@...el.com>
To:	Greg KH <gregkh@...uxfoundation.org>
CC:	"Wysocki, Rafael J" <rafael.j.wysocki@...el.com>,
	"Brown, Len" <len.brown@...el.com>,
	Corey Minyard <minyard@....org>,
	"Zhao, Yakui" <yakui.zhao@...el.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"stable@...r.kernel.org" <stable@...r.kernel.org>,
	"linux-acpi@...r.kernel.org" <linux-acpi@...r.kernel.org>,
	"openipmi-developer@...ts.sourceforge.net" 
	<openipmi-developer@...ts.sourceforge.net>
Subject: RE: [PATCH 01/13] ACPI/IPMI: Fix potential response buffer overflow

> From: linux-acpi-owner@...r.kernel.org
> [mailto:linux-acpi-owner@...r.kernel.org] On Behalf Of Greg KH
> Sent: Tuesday, July 23, 2013 10:54 PM
> 
> On Tue, Jul 23, 2013 at 04:08:59PM +0800, Lv Zheng wrote:
> > This patch enhances sanity checks on message size to avoid potential
> > buffer overflow.
> >
> > The kernel IPMI message size is IPMI_MAX_MSG_LENGTH(272 bytes) while
> > the ACPI specification defined IPMI message size is 64 bytes.  The
> > difference is not handled by the original codes.  This may cause crash
> > in the response handling codes.
> > This patch fixes this gap and also combines rx_data/tx_data to use
> > single data/len pair since they need not be seperated.
> >
> > Signed-off-by: Lv Zheng <lv.zheng@...el.com>
> > Reviewed-by: Huang Ying <ying.huang@...el.com>
> > ---
> >  drivers/acpi/acpi_ipmi.c |  100
> > ++++++++++++++++++++++++++++------------------
> >  1 file changed, 61 insertions(+), 39 deletions(-)
> 
> <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>
> 
> Same goes for the other patches you sent in this thread...

OK, I'll add prerequisites for each that want to be accepted by the stable queue and re-send them (PATCH 01-06).

Thanks and best regards
-Lv

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