linux-kernel - Re: [PATCH v3 part1 0/4] Fix SG_IO ambiguity between READ SUBCHANNEL and UNMAP (and other similar cases)

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Message-ID: <20140827093437.GA10937@hercules>
Date:	Wed, 27 Aug 2014 10:34:37 +0100
From:	Luis Henriques <luis.henriques@...onical.com>
To:	Paolo Bonzini <pbonzini@...hat.com>
Cc:	linux-kernel@...r.kernel.org, tj@...nel.org
Subject: Re: [PATCH v3 part1 0/4] Fix SG_IO ambiguity between READ SUBCHANNEL
 and UNMAP (and other similar cases)

On Thu, May 23, 2013 at 03:58:19PM +0200, Paolo Bonzini wrote:
> The SG_IO ioctl's command whitelist is designed for MMC devices (roughly,
> "play/burn CDs without requiring root") but some opcodes overlap across SCSI
> device classes and have different meanings for different classes.
> 
> To fix this, use different bitmaps for the various device classes.
> This is CVE-2012-4542.
>

Sorry for bringing this old issue again, but I was wondering what
happen to this fix.

Cheers,
--
Luís

> v2->v3: patches are now split differently, according to Tejun's indications;
> 	added conflict on operation code A4h.
> 
> Paolo Bonzini (4):
>   sg_io: pass request_queue to blk_verify_command
>   sg_io: prepare to introduce per-class command filters
>   sg_io: use different default filters for each device class
>   sg_io: resolve conflicts between commands assigned to multiple classes
>     (CVE-2012-4542)
> 
>  block/bsg.c              |   2 +-
>  block/scsi_ioctl.c       | 193 +++++++++++++++++++++++++++--------------------
>  drivers/scsi/scsi_scan.c |   2 +
>  drivers/scsi/sg.c        |   3 +-
>  include/linux/blkdev.h   |   5 +-
>  5 files changed, 118 insertions(+), 87 deletions(-)
> 
> -- 
> 1.8.1.4
> 
> --
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