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Bluetooth: hci_event: Make sure ISO events don't affect non-ISO connections

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ISO events (CIS/BIS) shall only be relevant for connection with link
type of ISO_LINK, otherwise the controller is probably buggy or it is
the result of fuzzer tools such as syzkaller.

Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
This commit is contained in:
Luiz Augusto von Dentz 2022-09-19 11:10:17 -07:00
parent 7096daba73
commit ed680f925a
1 changed files with 14 additions and 0 deletions
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14
net/bluetooth/hci_event.c
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@ -6791,6 +6791,13 @@ static void hci_le_cis_estabilished_evt(struct hci_dev *hdev, void *data,
goto unlock; goto unlock;
} }
if (conn->type != ISO_LINK) {
bt_dev_err(hdev,
"Invalid connection link type handle 0x%4.4x",
handle);
goto unlock;
}
if (conn->role == HCI_ROLE_SLAVE) { if (conn->role == HCI_ROLE_SLAVE) {
__le32 interval; __le32 interval;
@ -6911,6 +6918,13 @@ static void hci_le_create_big_complete_evt(struct hci_dev *hdev, void *data,
if (!conn) if (!conn)
goto unlock; goto unlock;
if (conn->type != ISO_LINK) {
bt_dev_err(hdev,
"Invalid connection link type handle 0x%2.2x",
ev->handle);
goto unlock;
}
if (ev->num_bis) if (ev->num_bis)
conn->handle = __le16_to_cpu(ev->bis_handle[0]); conn->handle = __le16_to_cpu(ev->bis_handle[0]);