diff options
| author | Dan Carpenter <dan.carpenter@oracle.com> | 2017-07-25 21:49:55 +0200 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2017-07-27 04:09:21 +0200 |
| commit | e6fd916a625110d75bd4d15b8488df44cf41c9fc (patch) | |
| tree | 2fc0bb5a15efd7fac015f06e5ab7a43526949c17 /drivers/scsi/aacraid | |
| parent | scsi: qedf: Limit number of CQs (diff) | |
| download | linux-e6fd916a625110d75bd4d15b8488df44cf41c9fc.tar.xz linux-e6fd916a625110d75bd4d15b8488df44cf41c9fc.zip | |
scsi: aacraid: reading out of bounds
"qd.id" comes directly from the copy_from_user() on the line before so
we should verify that it's within bounds.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/aacraid')
| -rw-r--r-- | drivers/scsi/aacraid/aachba.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/scsi/aacraid/aachba.c b/drivers/scsi/aacraid/aachba.c index 707ee2f5954d..4591113c49de 100644 --- a/drivers/scsi/aacraid/aachba.c +++ b/drivers/scsi/aacraid/aachba.c @@ -3198,10 +3198,11 @@ static int query_disk(struct aac_dev *dev, void __user *arg) return -EBUSY; if (copy_from_user(&qd, arg, sizeof (struct aac_query_disk))) return -EFAULT; - if (qd.cnum == -1) + if (qd.cnum == -1) { + if (qd.id < 0 || qd.id >= dev->maximum_num_containers) + return -EINVAL; qd.cnum = qd.id; - else if ((qd.bus == -1) && (qd.id == -1) && (qd.lun == -1)) - { + } else if ((qd.bus == -1) && (qd.id == -1) && (qd.lun == -1)) { if (qd.cnum < 0 || qd.cnum >= dev->maximum_num_containers) return -EINVAL; qd.instance = dev->scsi_host_ptr->host_no; |