From: Luiz Augusto von Dentz luiz.von.dentz@intel.com
stable inclusion from stable-v6.6.9 commit 90d6a3974771395cebc8d97e8ec69d5444f65d5d category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I8SU2D
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
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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 Signed-off-by: Zheng Zengkai zhengzengkai@huawei.com --- net/bluetooth/hci_event.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c index 3661f8cdbab7..152a1834838d 100644 --- a/net/bluetooth/hci_event.c +++ b/net/bluetooth/hci_event.c @@ -2305,7 +2305,8 @@ static void hci_cs_inquiry(struct hci_dev *hdev, __u8 status) 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)