| From | Greg Kroah-Hartman <> | Subject | [PATCH 5.8 16/38] Bluetooth: Prevent out-of-bounds read in hci_inquiry_result_evt() | Date | Mon, 10 Aug 2020 17:19:06 +0200 |
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From: Peilin Ye <yepeilin.cs@gmail.com>
commit 75bbd2ea50ba1c5d9da878a17e92eac02fe0fd3a upstream.
Check `num_rsp` before using it as for-loop counter.
Cc: stable@vger.kernel.org Signed-off-by: Peilin Ye <yepeilin.cs@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- net/bluetooth/hci_event.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/net/bluetooth/hci_event.c +++ b/net/bluetooth/hci_event.c @@ -2520,7 +2520,7 @@ static void hci_inquiry_result_evt(struc BT_DBG("%s num_rsp %d", hdev->name, num_rsp); - if (!num_rsp) + if (!num_rsp || skb->len < num_rsp * sizeof(*info) + 1) return; if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ))
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