linux-kernel - [PATCH] hptiop: avoid buffer overflow when returning sense data

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Message-Id: <200710151442.52230.linux@highpoint-tech.com>
Date:	Mon, 15 Oct 2007 14:42:52 +0800
From:	HighPoint Linux Team <linux@...hpoint-tech.com>
To:	"Andrew Morton" <akpm@...ux-foundation.org>,
	linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:	James.Bottomley@...elEye.com
Subject: [PATCH] hptiop: avoid buffer overflow when returning sense data


avoid buffer overflow when returning sense data.

Signed-off-by: HighPoint Linux Team <linux@...hpoint-tech.com>
---

diff --git a/drivers/scsi/hptiop.c b/drivers/scsi/hptiop.c
index 8b384fa..d32a4a9 100644
--- a/drivers/scsi/hptiop.c
+++ b/drivers/scsi/hptiop.c
@@ -375,8 +375,9 @@ static void hptiop_host_request_callback
 		scp->result = SAM_STAT_CHECK_CONDITION;
 		memset(&scp->sense_buffer,
 				0, sizeof(scp->sense_buffer));
-		memcpy(&scp->sense_buffer,
-			&req->sg_list, le32_to_cpu(req->dataxfer_length));
+		memcpy(&scp->sense_buffer, &req->sg_list,
+				min(sizeof(scp->sense_buffer),
+					le32_to_cpu(req->dataxfer_length)));
 		break;
 
 	default:

-
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