CVE-2022-49138

In the Linux kernel, the following vulnerability has been resolved:

Bluetooth: hci_event: Ignore multiple conn complete events

When one of the three connection complete events is received multiple

times for the same handle, the device is registered multiple times which

leads to memory corruptions. Therefore, consequent events for a single

connection are ignored.

The conn->state can hold different values, therefore HCI_CONN_HANDLE_UNSET

is introduced to identify new connections. To make sure the events do not

contain this or another invalid handle HCI_CONN_HANDLE_MAX and checks

are introduced.

Buglink: https://bugzilla.kernel.org/show_bug.cgi?id=215497