Last Modified: Jul 18, 2026
Affected Product(s):
BIG-IP LTM
Known Affected Versions:
11.5.1, 11.5.1 hf1, 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, 11.5.1 hf10, 11.5.1 hf11, 11.5.2, 11.5.2 hf1, 11.5.3, 11.5.3 hf1, 11.5.3 hf2, 11.5.4, 11.5.4 hf1, 11.5.4 hf2, 11.5.4 hf3, 11.5.4 hf4, 11.5.5, 11.5.6, 11.5.7, 11.5.8, 11.5.9, 11.5.10
Fixed In:
11.6.0
Opened: Mar 20, 2014 Severity: 3-Major Related Article:
K16223
If you have applied a Fast L4 profile on a virtual server, and there is a suspended or parked iRule on this virtual server, then this can cause a memory leak in the connflow cache subsystem.
The impact of this issue is a memory leak.
The conditions that lead to this problem include a parking iRule on a FastL4 virtual server. It is more likely to happen if the parking iRule is in server_closed or client-closed.
None
Fixed a memory leak related to Fast L4 profile suspended or parked iRule on associated virtual server.