"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@xxxxxxxxxx>
---
This bug predates git.
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;
--
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