From: Peilin Ye <[email protected]> commit 629b49c848ee71244203934347bd7730b0ddee8d upstream.
Check `num_rsp` before using it as for-loop counter. Add `unlock` label. Cc: [email protected] Signed-off-by: Peilin Ye <[email protected]> Signed-off-by: Marcel Holtmann <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> --- net/bluetooth/hci_event.c | 7 +++++++ 1 file changed, 7 insertions(+) --- a/net/bluetooth/hci_event.c +++ b/net/bluetooth/hci_event.c @@ -4166,6 +4166,9 @@ static void hci_inquiry_result_with_rssi struct inquiry_info_with_rssi_and_pscan_mode *info; info = (void *) (skb->data + 1); + if (skb->len < num_rsp * sizeof(*info) + 1) + goto unlock; + for (; num_rsp; num_rsp--, info++) { u32 flags; @@ -4187,6 +4190,9 @@ static void hci_inquiry_result_with_rssi } else { struct inquiry_info_with_rssi *info = (void *) (skb->data + 1); + if (skb->len < num_rsp * sizeof(*info) + 1) + goto unlock; + for (; num_rsp; num_rsp--, info++) { u32 flags; @@ -4207,6 +4213,7 @@ static void hci_inquiry_result_with_rssi } } +unlock: hci_dev_unlock(hdev); }
