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From: Dan Carpenter <dan.carpenter@oracle.com>
To: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Cc: Adheer Chandravanshi <adheer.chandravanshi@qlogic.com>,
	Dept-Eng iSCSI Driver <Dept-iSCSIDriver@qlogic.com>,
	"James E.J. Bottomley" <JBottomley@parallels.com>,
	linux-scsi <linux-scsi@vger.kernel.org>,
	"kernel-janitors@vger.kernel.org"
	<kernel-janitors@vger.kernel.org>
Subject: Re: [patch] [SCSI] qla4xxx: overflow in qla4xxx_set_chap_entry()
Date: Wed, 13 Nov 2013 15:08:12 +0300	[thread overview]
Message-ID: <20131113120812.GM5302@mwanda> (raw)
In-Reply-To: <3FC4AB8B47ECD546BCD4B361A64BEACD8C62AF37@avmb3.qlogic.org>

On Wed, Nov 13, 2013 at 11:52:37AM +0000, Vikas Chaudhary wrote:
> 
> 
> -----Original Message-----
> From: Dan Carpenter <dan.carpenter@oracle.com>
> Date: Wednesday, 13 November 2013 1:18 pm
> To: Vikas <vikas.chaudhary@qlogic.com>, Adheer Chandravanshi
> <adheer.chandravanshi@qlogic.com>
> Cc: Dept-Eng iSCSI Driver <Dept-iSCSIDriver@qlogic.com>, "James E.J.
> Bottomley" <JBottomley@parallels.com>, scsi <linux-scsi@vger.kernel.org>,
> "kernel-janitors@vger.kernel.org" <kernel-janitors@vger.kernel.org>
> Subject: [patch] [SCSI] qla4xxx: overflow in qla4xxx_set_chap_entry()
> 
> >We should cap the size of memcpy() because it comes from the network
> >and can't be trusted.
> 
> This patch is on assumption that data is coming from network,
> but in this case data come from application (iscsiadm) with correct length.
> 

No, that doesn't work.  We don't trust user space.

regards,
dan carpenter


  reply	other threads:[~2013-11-13 12:08 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-11-13  7:48 [patch] [SCSI] qla4xxx: overflow in qla4xxx_set_chap_entry() Dan Carpenter
2013-11-13 11:52 ` Vikas Chaudhary
2013-11-13 12:08   ` Dan Carpenter [this message]
2013-11-13 14:06     ` Dan Carpenter
2013-11-14  3:53       ` Vikas Chaudhary

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