Bluetooth: hci_conn: fail SCO/ISO via hci_conn_failed if ACL gone early

Vulnerability Description

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_conn: fail SCO/ISO via hci_conn_failed if ACL gone early Not calling hci_(dis)connect_cfm before deleting conn referred to by a socket generally results to use-after-free. When cleaning up SCO connections when the parent ACL is deleted too early, use hci_conn_failed to do the connection cleanup properly. We also need to clean up ISO connections in a similar situation when connecting has started but LE Create CIS is not yet sent, so do it too here.

References

• https://git.kernel.org/stable/c/397d58007532644b35fad746da48c41161f32a57
• https://git.kernel.org/stable/c/e94b898463a62b72a2a8b75dea8936bf4db78e00
• https://git.kernel.org/stable/c/3344d318337d9dca928fd448e966557ec5063f85