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From: Chris Mason <chris.mason@fusionio.com>
To: Pascal Junod <pascal@junod.info>,
	linux-btrfs <linux-btrfs@vger.kernel.org>
Subject: Re: [btrfs] is vulnerable to a hash-DoS attack
Date: Thu, 13 Dec 2012 15:52:08 -0500	[thread overview]
Message-ID: <20121213205208.GA27308@shiny> (raw)
In-Reply-To: <50C9D085.3020305@junod.info>

[ adding linux-btrfs ]

On Thu, Dec 13, 2012 at 05:56:37AM -0700, Pascal Junod wrote:
> Hello folk,
> 
> The btrfs file system, part of the linux kernel, is vulnerable to a
> trivial hash-DoS attack. More details can be found here:
> 
> http://crypto.junod.info/2012/12/13/hash-dos-and-btrfs/

Hi Pascal,

Thanks for taking the time to write this up.  As far as I can tell, the
looping was actually fixed in an older kernel and I just misread our
version string in your original email.

I'll track down the commit that fixed things and send it off to the
stable series.  SuSE and Fujitsu have done a number of error handling
cleanups, it should be one of those.

-chris


  reply	other threads:[~2012-12-13 20:52 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-12-13 12:56 [btrfs] is vulnerable to a hash-DoS attack Pascal Junod
2012-12-13 20:52 ` Chris Mason [this message]
2012-12-13 21:34   ` David Sterba
2012-12-13 22:07     ` Chris Mason
2012-12-14 14:29       ` Chris Mason
2012-12-14 16:41         ` Pascal Junod

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