linux-kernel - Re: [PATCH] staging: r8188eu: prevent ->Ssid overflow in rtw_wx_set

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Date:   Thu, 19 May 2022 19:36:47 +0200
From:   Greg KH <gregkh@...uxfoundation.org>
To:     Dan Carpenter <dan.carpenter@...cle.com>
Cc:     Denis Efremov <denis.e.efremov@...cle.com>,
        Larry.Finger@...inger.net, phil@...lpotter.co.uk,
        straube.linux@...il.com, linux-staging@...ts.linux.dev,
        linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org,
        stable <stable@...r.kernel.org>
Subject: Re: [PATCH] staging: r8188eu: prevent ->Ssid overflow in
 rtw_wx_set_scan()

On Thu, May 19, 2022 at 08:16:28PM +0300, Dan Carpenter wrote:
> On Thu, May 19, 2022 at 05:45:31PM +0200, Greg KH wrote:
> > On Wed, May 18, 2022 at 11:00:52AM +0400, Denis Efremov wrote:
> > > This code has a check to prevent read overflow but it needs another
> > > check to prevent writing beyond the end of the ->Ssid[] array.
> > > 
> > > Fixes: 2b42bd58b321 ("staging: r8188eu: introduce new os_dep dir for RTL8188eu driver")
> > > Cc: stable <stable@...r.kernel.org>
> > > Signed-off-by: Denis Efremov <denis.e.efremov@...cle.com>
> > > ---
> > > 
> > > This patch is a copy of Dan's 74b6b20df8cf (CVE-2021-28660).
> > > Drivers r8188eu and rtl8188eu share the same code.
> > 
> > This does not apply to my tree at all. This file is not present anymore,
> > what tree did you make it against?
> > 
> 
> That's weird.  It applies fine for me on today's linux-next.

Ok, really wierd, it worked this time.  I'll blame my email setup
somehow, I was churning through lots of patches at once...

thanks for checking.

greg k-h