Bug ID 1783645: TMM core when iRule with ASM_REQUEST_BLOCKING has ASM::disable

Last Modified: Oct 19, 2025

Affected Product(s):
BIG-IP LTM(all modules)

Known Affected Versions:
16.1.4, 16.1.4.1, 16.1.4.2, 16.1.4.3, 16.1.5, 16.1.5.1, 16.1.5.2, 16.1.6, 16.1.6.1

Opened: Jan 03, 2025

Severity: 3-Major

Symptoms

TMM core while serving an HTTP request

Impact

Traffic disrupted while tmm restarts.

Conditions

ASM request blocking has been triggered in an iRule that contains an ASM::disable

Workaround

Avoid using ASM::disable in ASM_REQUEST_BLOCKING

Fix Information

None

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips