Bug ID 2186897: TMM core SIGSEVG upon replacing L7 DOS policy

Last Modified: Jan 12, 2026

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

Known Affected Versions:
17.5.1.3

Opened: Dec 18, 2025

Severity: 3-Major

Symptoms

On rare cases of expired connection, tmm can crash.

Impact

Traffic disrupted while tmm restarts.

Conditions

BADOS L7 configured Replacing DOS policy under traffic

Workaround

None

Fix Information

None

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips