From: Johan Hedberg <johan.hedberg@xxxxxxxxx>
We should never allow user space to feed back debug keys to the kernel.
If the user desires to use debug keys require setting the appropriate
debug keys mode and performing a new pairing.
Signed-off-by: Johan Hedberg <johan.hedberg@xxxxxxxxx>
---
net/bluetooth/mgmt.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c
index 634b44ddc9f9..747746b0d2c4 100644
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c
@@ -2426,6 +2426,12 @@ static int load_link_keys(struct sock *sk, struct hci_dev *hdev, void *data,
for (i = 0; i < key_count; i++) {
struct mgmt_link_key_info *key = &cp->keys[i];
+ /* Always ignore debug keys and require a new pairing if
+ * the user wants to use them.
+ */
+ if (key->type == HCI_LK_DEBUG_COMBINATION)
+ continue;
+
hci_add_link_key(hdev, NULL, &key->addr.bdaddr, key->val,
key->type, key->pin_len, NULL);
}
--
1.9.3
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