Commit 70d1e884 authored Jul 10, 2020 by Peilin Ye Committed by Greg Kroah-Hartman Aug 11, 2020

Bluetooth: Prevent out-of-bounds read in hci_inquiry_result_evt()



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>

parent c26eaaf5

net/bluetooth/hci_event.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -2444,7 +2444,7 @@ static void hci_inquiry_result_evt(struct hci_dev hdev, struct sk_buff skb)

		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))