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Date: Wed, 21 Feb 2018 10:42:31 +0100
From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: Eric Biggers <ebiggers3@gmail.com>
Cc: stable@vger.kernel.org,
        Linus Torvalds <torvalds@linux-foundation.org>,
        Dmitry Vyukov <dvyukov@google.com>,
        Vegard Nossum <vegard.nossum@gmail.com>,
        Al Viro <viro@zeniv.linux.org.uk>
Subject: Re: Apply "vfs: don't do RCU lookup of empty pathnames" to stable
Message-ID: <20180221094231.GA21412@kroah.com>
References: <20180215191137.GA197331@gmail.com>
 <20180215195157.GA18090@kroah.com>
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On Thu, Feb 15, 2018 at 08:51:57PM +0100, Greg Kroah-Hartman wrote:
> On Thu, Feb 15, 2018 at 11:11:37AM -0800, Eric Biggers wrote:
> > Hi Greg, here's another one.  When you have a chance can you please apply commit
> > c0eb027e5aef ("vfs: don't do RCU lookup of empty pathnames") to the stable
> > trees?  I can reproduce the use-after-free on 4.4-stable and 4.9-stable, and it
> > is fixed by the patch.  And I wasn't able to check 3.18 because KASAN isn't
> > available there, but I think the bug there as well.  Thanks,
> 
> Thanks for this, I'll queue it up for the next round of stable patches
> after this one.

It doesn't apply to 3.18.y due to some vfs changes not being there, so
I'm going to go drop the patch I just queued up there, sorry for that
noise.  But now added to 4.4.y and 4.9.y.

thanks,

greg k-h