4.19-stable review patch. If anyone has any objections, please let me know.
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From: Luiz Augusto von Dentz luiz.von.dentz@intel.com
commit 99e67d46e5ff3c7c901af6009edec72d3d363be8 upstream.
Before setting HCI_INQUIRY bit check if HCI_OP_INQUIRY was really sent otherwise the controller maybe be generating invalid events or, more likely, it is a result of fuzzing tools attempting to test the right behavior of the stack when unexpected events are generated.
Cc: stable@vger.kernel.org Link: https://bugzilla.kernel.org/show_bug.cgi?id=218151 Signed-off-by: Luiz Augusto von Dentz luiz.von.dentz@intel.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- net/bluetooth/hci_event.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
--- a/net/bluetooth/hci_event.c +++ b/net/bluetooth/hci_event.c @@ -1701,7 +1701,8 @@ static void hci_cs_inquiry(struct hci_de return; }
- set_bit(HCI_INQUIRY, &hdev->flags); + if (hci_sent_cmd_data(hdev, HCI_OP_INQUIRY)) + set_bit(HCI_INQUIRY, &hdev->flags); }
static void hci_cs_create_conn(struct hci_dev *hdev, __u8 status)