Last Modified: Oct 06, 2020
Affected Product:
See more info
BIG-IP LTM
Known Affected Versions:
11.4.1, 11.5.0, 11.5.1, 11.5.1 HF1, 11.5.1 HF10, 11.5.1 HF11, 11.5.1 HF2, 11.5.1 HF3, 11.5.1 HF4, 11.5.1 HF5, 11.5.1 HF6, 11.5.1 HF7, 11.5.1 HF8, 11.5.1 HF9, 11.5.10, 11.6.0, 11.6.0 HF1, 11.6.0 HF2, 11.6.0 HF3, 11.6.0 HF4
Fixed In:
12.0.0, 11.6.0 HF5, 11.5.2
Opened: Jul 02, 2014
Severity: 2-Critical
Related AskF5 Article:
K15760
Virtual with FastL4, loose initiation and loose close enabled might result in TMM core.
Traffic disrupted while tmm restarts.
The problem can occur when the following conditions are met: - Virtual server with FastL4 profile. - FastL4 profile has loose initiation and loose close enabled. - TCP FIN is received that is not associated with an existing connection.
Do not enable loose initiation and loose close on FastL4 profile
FastL4 component now validates existence of connection peer upon reception of TCP FIN.