| Message ID | 20200808040440.255578-1-yepeilin.cs@gmail.com |
|---|---|
| State | Awaiting Upstream |
| Delegated to: | David Miller |
| Headers | show |
| Series | [Linux-kernel-mentees,net] Bluetooth: Fix NULL pointer dereference in amp_read_loc_assoc_final_data() | expand |
diff --git a/net/bluetooth/amp.c b/net/bluetooth/amp.c index 9c711f0dfae3..be2d469d6369 100644 --- a/net/bluetooth/amp.c +++ b/net/bluetooth/amp.c @@ -297,6 +297,9 @@ void amp_read_loc_assoc_final_data(struct hci_dev *hdev, struct hci_request req; int err; + if (!mgr) + return; + cp.phy_handle = hcon->handle; cp.len_so_far = cpu_to_le16(0); cp.max_len = cpu_to_le16(hdev->amp_assoc_size);
Prevent amp_read_loc_assoc_final_data() from dereferencing `mgr` as NULL. Reported-and-tested-by: syzbot+f4fb0eaafdb51c32a153@syzkaller.appspotmail.com Fixes: 9495b2ee757f ("Bluetooth: AMP: Process Chan Selected event") Signed-off-by: Peilin Ye <yepeilin.cs@gmail.com> --- net/bluetooth/amp.c | 3 +++ 1 file changed, 3 insertions(+)