Prevent hci_phy_link_complete_evt() from dereferencing 'hcon->amp_mgr' as NULL. Fix it by adding pointer check for it.
Reported-and-tested-by: syzbot+0bef568258653cff2...@syzkaller.appspotmail.com Link: https://syzkaller.appspot.com/bug?extid=0bef568258653cff272f Signed-off-by: Anmol Karn <anmol.karan...@gmail.com> --- net/bluetooth/hci_event.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c index 4b7fc430793c..871e16804433 100644 --- a/net/bluetooth/hci_event.c +++ b/net/bluetooth/hci_event.c @@ -4936,6 +4936,11 @@ static void hci_phy_link_complete_evt(struct hci_dev *hdev, return; } + if (IS_ERR_OR_NULL(hcon->amp_mgr)) { + hci_dev_unlock(hdev); + return; + } + if (ev->status) { hci_conn_del(hcon); hci_dev_unlock(hdev); -- 2.28.0
