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Bluetooth: MGMT: Add error handling to pair_device()

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commit 538fd3921a upstream.

hci_conn_params_add() never checks for a NULL value and could lead to a NULL
pointer dereference causing a crash.

Fixed by adding error handling in the function.

Cc: Stable <stable@kernel.org>
Fixes: 5157b8a503 ("Bluetooth: Fix initializing conn_params in scan phase")
Signed-off-by: Griffin Kroah-Hartman <griffin@kroah.com>
Reported-by: Yiwei Zhang <zhan4630@purdue.edu>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Griffin Kroah-Hartman
2024-08-15 13:51:00 +02:00
committed by Greg Kroah-Hartman
parent 2b507b0399
commit 90e1ff1c15
1 changed files with 4 additions and 0 deletions
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net/bluetooth/mgmt.c
+4
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@@ -2908,6 +2908,10 @@ static int pair_device(struct sock *sk, struct hci_dev *hdev, void *data,
* will be kept and this function does nothing.
*/
p = hci_conn_params_add(hdev, &cp->addr.bdaddr, addr_type);
if (!p) {
err = -EIO;
goto unlock;
}
if (p->auto_connect == HCI_AUTO_CONN_EXPLICIT)
p->auto_connect = HCI_AUTO_CONN_DISABLED;