hci_inquiry_result_with_rssi_evt() can perform out of bound reads on skb->data as a bound check is missing.
Signed-off-by: Tomas Bortoli <tomasbort...@gmail.com> Reported-by: syzbot+cec7a50c412a2c03f...@syzkaller.appspotmail.com Reported-by: syzbot+660883c56e2fa65d4...@syzkaller.appspotmail.com --- Syzkaler reports: https://syzkaller.appspot.com/bug?id=d708485af9edc3af35f3b4d554e827c6c8bf6b0f https://syzkaller.appspot.com/bug?id=3acd1155d48a5acc5d76711568b04926945a6885 net/bluetooth/hci_event.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c index ac2826ce162b..aa953d23bb72 100644 --- a/net/bluetooth/hci_event.c +++ b/net/bluetooth/hci_event.c @@ -3983,6 +3983,10 @@ static void hci_inquiry_result_with_rssi_evt(struct hci_dev *hdev, for (; num_rsp; num_rsp--, info++) { u32 flags; + if ((void *)(info + sizeof(info)) > + (void *)(skb->data + skb->len)) + break; + bacpy(&data.bdaddr, &info->bdaddr); data.pscan_rep_mode = info->pscan_rep_mode; data.pscan_period_mode = info->pscan_period_mode; -- 2.11.0
