Bluetooth: HCI: Fix potential null-ptr-deref

Fix potential null-ptr-deref in hci_le_big_sync_established_evt().

Fixes: f777d8827817 (Bluetooth: ISO: Notify user space about failed bis connections)
Signed-off-by: Sungwoo Kim <iam@sung-woo.kim>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>

diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
index 4a27e4a17a67449ffd8a37cb057357e20881667c..d72d238c1656ed442aa89c3026dbafb9ac1cdf6b 100644 (file)
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c
@@ -7037,6 +7037,8 @@ static void hci_le_big_sync_established_evt(struct hci_dev *hdev, void *data,
                        u16 handle = le16_to_cpu(ev->bis[i]);
 
                        bis = hci_conn_hash_lookup_handle(hdev, handle);
+                       if (!bis)
+                               continue;
 
                        set_bit(HCI_CONN_BIG_SYNC_FAILED, &bis->flags);
                        hci_connect_cfm(bis, ev->status);