5.15-stable review patch. If anyone has any objections, please let me know.
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From: Griffin Kroah-Hartman griffin@kroah.com
commit 538fd3921afac97158d4177139a0ad39f056dbb2 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: 5157b8a503fa ("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 --- net/bluetooth/mgmt.c | 4 ++++ 1 file changed, 4 insertions(+)
--- a/net/bluetooth/mgmt.c +++ b/net/bluetooth/mgmt.c @@ -2967,6 +2967,10 @@ static int pair_device(struct sock *sk, * 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;