Last Modified: Apr 28, 2025
Affected Product(s):
BIG-IP LTM
Known Affected Versions:
15.1.5, 15.1.5.1, 15.1.6, 15.1.6.1
Fixed In:
17.5.0, 17.1.1, 15.1.7
Opened: May 05, 2022 Severity: 3-Major
In the execution of a specific sequence of events, when TCL attempts to execute the non-existing event, it follows a path which in turn makes SPAWN flow to become a zombie, which pile up over time showing up on the monitoring system.
Clients may not be able to connect to the virtual server after a point in time.
-- http2, client-ssl, optimized-caching filters on the virtual server -- HTTP::respond iRule with LB_FAILED event and set of iRules like HTTP_REQUEST, HTTP_RESPONSE, CLIENTSSL_HANDSHAKE, CACHE_RESPONSE, ASM_REQUEST_BLOCKING -- send http2 request through the virtual server
None
This defect has been resolved and stale connections are being cleaned up as expected.