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

commit 75bbd2ea50 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>
This commit is contained in:
Peilin Ye 2020-07-10 17:39:18 -04:00 committed by Greg Kroah-Hartman
parent c26eaaf547
commit 70d1e884ed
1 changed files with 1 additions and 1 deletions
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2
net/bluetooth/hci_event.c
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@ -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))