From: Waiman Long <longman@redhat.com>
To: James Bottomley <jejb@linux.ibm.com>,
"Martin K. Petersen" <martin.petersen@oracle.com>
Cc: linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] scsi: ses: Fix out-of-bounds memory access in ses_enclosure_data_process()
Date: Thu, 18 Jul 2019 14:18:25 -0400 [thread overview]
Message-ID: <729b0751-01a6-7c0b-ce0d-f19807b59dee@redhat.com> (raw)
In-Reply-To: <1558363938.3742.1.camel@linux.ibm.com>
On 5/20/19 10:52 AM, James Bottomley wrote:
> On Mon, 2019-05-20 at 10:41 -0400, Waiman Long wrote:
> [...]
>>> --- a/drivers/scsi/ses.c
>>> +++ b/drivers/scsi/ses.c
>>> @@ -605,9 +605,14 @@ static void ses_enclosure_data_process(struct
>>> enclosure_device *edev,
>>> /* these elements are optional */
>>> type_ptr[0] ==
>>> ENCLOSURE_COMPONENT_SCSI_TARGET_PORT ||
>>> type_ptr[0] ==
>>> ENCLOSURE_COMPONENT_SCSI_INITIATOR_PORT ||
>>> - type_ptr[0] ==
>>> ENCLOSURE_COMPONENT_CONTROLLER_ELECTRONICS))
>>> + type_ptr[0] ==
>>> ENCLOSURE_COMPONENT_CONTROLLER_ELECTRONICS)) {
>>> addl_desc_ptr += addl_desc_ptr[1]
>>> + 2;
>>>
>>> + /* Ensure no out-of-bounds memory
>>> access */
>>> + if (addl_desc_ptr >= ses_dev-
>>>> page10 +
>>> + ses_dev-
>>>> page10_len)
>>> + addl_desc_ptr = NULL;
>>> + }
>>> }
>>> }
>>> kfree(buf);
>> Ping! Any comment on this patch.
> The update looks fine to me:
>
> Reviewed-by: James E.J. Bottomley <jejb@linux.ibm.com>
>
> It might also be interesting to find out how the proliant is
> structuring this descriptor array to precipitate the out of bounds: Is
> it just an off by one or something more serious?
>
> James
>
Is someone going to merge this patch in the current cycle?
Thanks,
Longman
next prev parent reply other threads:[~2019-07-18 18:18 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-05-01 18:05 [PATCH] scsi: ses: Fix out-of-bounds memory access in ses_enclosure_data_process() Waiman Long
2019-05-20 14:41 ` Waiman Long
2019-05-20 14:52 ` James Bottomley
2019-05-20 15:24 ` Waiman Long
2019-05-20 15:46 ` James Bottomley
2019-05-20 15:56 ` Waiman Long
2019-05-21 17:23 ` Waiman Long
2019-05-20 16:05 ` Martin K. Petersen
2019-05-20 21:53 ` Douglas Gilbert
2019-05-21 12:02 ` Martin K. Petersen
2019-07-18 18:18 ` Waiman Long [this message]
2019-07-18 18:26 ` Martin K. Petersen
2019-07-18 18:29 ` Waiman Long
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