Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-11-24 05:02:12 +00:00
Code Issues Packages Projects Releases Wiki Activity

be2iscsi: check ip buffer before copying

Browse Source 
Dan Carpenter found a issue where be2iscsi would copy the ip
from userspace to the driver buffer before checking the len
of the data being copied:
http://marc.info/?l=linux-scsi&m=140982651504251&w=2

This patch just has us only copy what we the driver buffer
can support.

Cc: <stable@vger.kernel.org>
Tested-by: John Soni Jose <sony.john-n@emulex.com>
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Mike Christie 2014-09-29 13:55:41 -05:00 committed by Christoph Hellwig
parent 4bfb8ebf4c
commit a41a9ad3bb
1 changed files with 8 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
drivers/scsi/be2iscsi/be_mgmt.c
View File

@ -943,17 +943,20 @@ mgmt_static_ip_modify(struct beiscsi_hba *phba,
if (ip_action == IP_ACTION_ADD) {
memcpy(req->ip_params.ip_record.ip_addr.addr, ip_param->value,
ip_param->len);
sizeof(req->ip_params.ip_record.ip_addr.addr));
if (subnet_param)
memcpy(req->ip_params.ip_record.ip_addr.subnet_mask,
subnet_param->value, subnet_param->len);
subnet_param->value,
sizeof(req->ip_params.ip_record.ip_addr.subnet_mask));
} else {
memcpy(req->ip_params.ip_record.ip_addr.addr,
if_info->ip_addr.addr, ip_param->len);
if_info->ip_addr.addr,
sizeof(req->ip_params.ip_record.ip_addr.addr));
memcpy(req->ip_params.ip_record.ip_addr.subnet_mask,
if_info->ip_addr.subnet_mask, ip_param->len);
if_info->ip_addr.subnet_mask,
sizeof(req->ip_params.ip_record.ip_addr.subnet_mask));
}
rc = mgmt_exec_nonemb_cmd(phba, &nonemb_cmd, NULL, 0);
@ -981,7 +984,7 @@ static int mgmt_modify_gateway(struct beiscsi_hba *phba, uint8_t *gt_addr,
req->action = gtway_action;
req->ip_addr.ip_type = BE2_IPV4;
memcpy(req->ip_addr.addr, gt_addr, param_len);
memcpy(req->ip_addr.addr, gt_addr, sizeof(req->ip_addr.addr));
return mgmt_exec_nonemb_cmd(phba, &nonemb_cmd, NULL, 0);
}