linux-kernel - Re: [PATCH v2 0/2] tty: erase buffers when the kernel is done with it.

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Date:   Wed, 10 Oct 2018 20:24:21 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     Milan Broz <gmazyland@...il.com>
Cc:     linux-serial@...r.kernel.org, linux-kernel@...r.kernel.org,
        jslaby@...e.com, aszlig@....build, torvalds@...ux-foundation.org,
        w@....eu, Daniel Zatovic <daniel.zatovic@...il.com>
Subject: Re: [PATCH v2 0/2] tty: erase buffers when the kernel is done with
 it.

On Wed, Oct 10, 2018 at 08:20:06PM +0200, Milan Broz wrote:
> On 04/10/2018 20:06, Greg Kroah-Hartman wrote:
> > azlig and Milan Broz reported that when the tty layer is done with a
> > buffer, the data can hang around in it for a very long time.  That
> > sometimes can "leak" to userspace under some conditions.
> > 
> > Because of this, just zero out the data after the tty layer is finished
> > with it, for buffers that we "think" should be zeroed out.
> > 
> > v2 - addressed some review comments on the 2/2 patch.
> 
> Hello Greg,
> 
> together with our intern we re-tested both patches and it fixes the reported problem,
> so, if it helps anything, you can add
> 
> Tested-by: Milan Broz <gmazyland@...il.com>
> Tested-by: Daniel Zatovic <daniel.zatovic@...il.com>
> 
> Do you plan to add this to linux-next?

Yes, I'll queue it up soon, thanks for testing!

greg k-h