Last Modified: Sep 13, 2023
Known Affected Versions:
12.1.2, 12.1.3, 22.214.171.124, 126.96.36.199, 188.8.131.52, 184.108.40.206, 220.127.116.11, 18.104.22.168, 22.214.171.124, 12.1.4, 126.96.36.199, 13.0.0, 13.0.0 HF1, 13.0.0 HF2, 13.0.0 HF3, 13.0.1
Opened: Oct 20, 2016 Severity: 4-Minor
During an MPTCP connection, if a DATA_ACK or DATA_FIN is received on a subflow that is not currently being used to transmit data, that DATA_ACK or DATA_FIN is ignored. Clients generally respond on the same subflow that they received data on, making this situation somewhat rare.
The DATA_ACK or DATA_FIN is ignored. If the same information is not sent on other subflows, this can cause the connection to hang until the subflow times out.
MPTCP is in use on a connection and a DATA_ACK or DATA_FIN is received on a subflow that is not currently being used to transmit data.
Accept DATA_ACK and DATA_FIN on any subflow.