Bluetooth: Fix checking for valid address type values in mgmt commands
authorJohan Hedberg <johan.hedberg@intel.com>
Sun, 20 Jan 2013 12:27:19 +0000 (14:27 +0200)
committerGustavo Padovan <gustavo.padovan@collabora.co.uk>
Wed, 23 Jan 2013 03:59:55 +0000 (01:59 -0200)
This patch adds checks for valid address type values passed to mgmt
commands. If an invalid address type is encountered the code will return
a proper invalid params response.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
net/bluetooth/mgmt.c

index bc04c44..7dd2de1 100644 (file)
@@ -1526,6 +1526,14 @@ static int load_link_keys(struct sock *sk, struct hci_dev *hdev, void *data,
        BT_DBG("%s debug_keys %u key_count %u", hdev->name, cp->debug_keys,
               key_count);
 
+       for (i = 0; i < key_count; i++) {
+               struct mgmt_link_key_info *key = &cp->keys[i];
+
+               if (key->addr.type != BDADDR_BREDR)
+                       return cmd_status(sk, hdev->id, MGMT_OP_LOAD_LINK_KEYS,
+                                         MGMT_STATUS_INVALID_PARAMS);
+       }
+
        hci_dev_lock(hdev);
 
        hci_link_keys_clear(hdev);
@@ -1573,12 +1581,17 @@ static int unpair_device(struct sock *sk, struct hci_dev *hdev, void *data,
        struct hci_conn *conn;
        int err;
 
-       hci_dev_lock(hdev);
-
        memset(&rp, 0, sizeof(rp));
        bacpy(&rp.addr.bdaddr, &cp->addr.bdaddr);
        rp.addr.type = cp->addr.type;
 
+       if (!bdaddr_type_is_valid(cp->addr.type))
+               return cmd_complete(sk, hdev->id, MGMT_OP_UNPAIR_DEVICE,
+                                   MGMT_STATUS_INVALID_PARAMS,
+                                   &rp, sizeof(rp));
+
+       hci_dev_lock(hdev);
+
        if (!hdev_is_powered(hdev)) {
                err = cmd_complete(sk, hdev->id, MGMT_OP_UNPAIR_DEVICE,
                                   MGMT_STATUS_NOT_POWERED, &rp, sizeof(rp));
@@ -1643,6 +1656,10 @@ static int disconnect(struct sock *sk, struct hci_dev *hdev, void *data,
 
        BT_DBG("");
 
+       if (!bdaddr_type_is_valid(cp->addr.type))
+               return cmd_status(sk, hdev->id, MGMT_OP_DISCONNECT,
+                                 MGMT_STATUS_INVALID_PARAMS);
+
        hci_dev_lock(hdev);
 
        if (!test_bit(HCI_UP, &hdev->flags)) {
@@ -1947,6 +1964,11 @@ static int pair_device(struct sock *sk, struct hci_dev *hdev, void *data,
        bacpy(&rp.addr.bdaddr, &cp->addr.bdaddr);
        rp.addr.type = cp->addr.type;
 
+       if (!bdaddr_type_is_valid(cp->addr.type))
+               return cmd_complete(sk, hdev->id, MGMT_OP_PAIR_DEVICE,
+                                   MGMT_STATUS_INVALID_PARAMS,
+                                   &rp, sizeof(rp));
+
        hci_dev_lock(hdev);
 
        if (!hdev_is_powered(hdev)) {
@@ -2564,6 +2586,10 @@ static int block_device(struct sock *sk, struct hci_dev *hdev, void *data,
 
        BT_DBG("%s", hdev->name);
 
+       if (!bdaddr_type_is_valid(cp->addr.type))
+               return cmd_status(sk, hdev->id, MGMT_OP_BLOCK_DEVICE,
+                                 MGMT_STATUS_INVALID_PARAMS);
+
        hci_dev_lock(hdev);
 
        err = hci_blacklist_add(hdev, &cp->addr.bdaddr, cp->addr.type);
@@ -2589,6 +2615,10 @@ static int unblock_device(struct sock *sk, struct hci_dev *hdev, void *data,
 
        BT_DBG("%s", hdev->name);
 
+       if (!bdaddr_type_is_valid(cp->addr.type))
+               return cmd_status(sk, hdev->id, MGMT_OP_UNBLOCK_DEVICE,
+                                 MGMT_STATUS_INVALID_PARAMS);
+
        hci_dev_lock(hdev);
 
        err = hci_blacklist_del(hdev, &cp->addr.bdaddr, cp->addr.type);
@@ -2707,6 +2737,8 @@ static bool ltk_is_valid(struct mgmt_ltk_info *key)
                return false;
        if (key->master != 0x00 && key->master != 0x01)
                return false;
+       if (!bdaddr_type_is_le(key->addr.type))
+               return false;
        return true;
 }