lkml.org 
[lkml]   [2007]   [Nov]   [15]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Date
From
Subject[patch 32/40] hptiop: avoid buffer overflow when returning sense data


-stable review patch. If anyone has any objections, please let us know.

------------------
From: HighPoint Linux Team <linux@highpoint-tech.com>

patch 0fec02c93f60fb44ba3a24a0d3e4a52521d34d3f in mainline.

avoid buffer overflow when returning sense data.

With current adapter firmware the driver is working but future firmware
updates may return sense data larger than 96 bytes, causing overflow on
scp->sense_buffer and a kernel crash.

This fix should be backported to earlier kernels.

Signed-off-by: HighPoint Linux Team <linux@highpoint-tech.com>
Signed-off-by: James Bottomley <James.Bottomley@steeleye.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
drivers/scsi/hptiop.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)

--- a/drivers/scsi/hptiop.c
+++ b/drivers/scsi/hptiop.c
@@ -365,8 +365,9 @@ 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:
--
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2007-11-15 08:09    [W:0.293 / U:0.308 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site