From: Marcel Holtmann <marcel@holtmann.org>
Date: Thu, 3 Oct 2013 04:16:08 +0000 (-0700)
Subject: Bluetooth: Restrict loading of long term keys to LE capable controllers
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=cf99ba1359701ce82e756368513ddd0c5a7164ba;p=GitHub%2Fexynos8895%2Fandroid_kernel_samsung_universal8895.git

Bluetooth: Restrict loading of long term keys to LE capable controllers

Loading long term keys into a BR/EDR only controller make no sense.
The kernel would never use any of these keys. So instead of allowing
userspace to waste memory, reject such operation with a not supported
error message.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
---

diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c
index bf33c5280f66..4ce0f118e4cd 100644
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c
@@ -3553,6 +3553,12 @@ static int load_long_term_keys(struct sock *sk, struct hci_dev *hdev,
 	u16 key_count, expected_len;
 	int i, err;
 
+	BT_DBG("request for %s", hdev->name);
+
+	if (!lmp_le_capable(hdev))
+		return cmd_status(sk, hdev->id, MGMT_OP_LOAD_LONG_TERM_KEYS,
+				  MGMT_STATUS_NOT_SUPPORTED);
+
 	key_count = __le16_to_cpu(cp->key_count);
 
 	expected_len = sizeof(*cp) + key_count *