Messages in this thread Patch in this message | | | From | Peilin Ye <> | Subject | [Linux-kernel-mentees] [PATCH 1/2] net/bluetooth: Prevent out-of-bounds read in hci_inquiry_result_evt() | Date | Fri, 10 Jul 2020 17:39:18 -0400 |
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Check `num_rsp` before using it as for-loop counter.
Cc: stable@vger.kernel.org Signed-off-by: Peilin Ye <yepeilin.cs@gmail.com> --- net/bluetooth/hci_event.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c index 03a0759f2fc2..8b3736c83b8e 100644 --- a/net/bluetooth/hci_event.c +++ b/net/bluetooth/hci_event.c @@ -2517,7 +2517,7 @@ 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)) -- 2.25.1
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