linux-kernel - Re: use-after-free in bluetooth (hci_conn_hash

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Message-ID: <20120307083627.GA3647@aemeltch-MOBL1>
Date:	Wed, 7 Mar 2012 10:36:31 +0200
From:	Andrei Emeltchenko <andrei.emeltchenko.news@...il.com>
To:	Dave Jones <davej@...hat.com>,
	Marcel Holtmann <marcel@...tmann.org>,
	"Gustavo F. Padovan" <padovan@...fusion.mobi>,
	Linux Kernel <linux-kernel@...r.kernel.org>,
	Fedora Kernel Team <kernel-team@...oraproject.org>
Subject: Re: use-after-free in bluetooth (hci_conn_hash_flush)

Hi Dave,

On Tue, Mar 06, 2012 at 10:22:15AM -0500, Dave Jones wrote:
> On Tue, Mar 06, 2012 at 10:53:44AM +0200, Andrei Emeltchenko wrote:
> 
>  > On Mon, Mar 05, 2012 at 05:12:42PM -0500, Dave Jones wrote:
>  > > We had a user report this, which looks like a use after free
>  > > in hci_conn_hash_flush(). Probably related to bf4c63252490ba78fb833cc7acf1a5b1900c970f
>  > 
>  > Yes most probably this is the reason.
>  > 
>  > > Full report is at https://bugzilla.redhat.com/show_bug.cgi?id=797590
>  > 
>  > Could you try following commit?
>  > 
>  > commit 3c4e0df028935618d052235ba85bc7079be13394
>  > Author: Andrei Emeltchenko <andrei.emeltchenko@...el.com>
>  > Date:   Thu Feb 2 10:32:17 2012 +0200
>  > 
>  >     Bluetooth: Use list _safe deleting from conn_hash_list
> 
> Could you attach the patch ? I'll throw it into a Fedora build for
> the user who saw this to test.

Please check those related patches here:

http://git.kernel.org/?p=linux/kernel/git/next/linux-next.git;a=patch;h=2a5a5ec620a29d4ba07743c3151cdf0a417c8f8c
http://git.kernel.org/?p=linux/kernel/git/next/linux-next.git;a=patch;h=3c4e0df028935618d052235ba85bc7079be13394

Best regards 
Andrei Emeltchenko 

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