Bug ID 748081: Memory leak in Behavioral DoS module

Last Modified: Nov 07, 2022

Bug Tracker

Affected Product:  See more info
BIG-IP AFM(all modules)

Known Affected Versions:
13.1.0,,,,,,,,, 13.1.1,,,, 14.1.0,

Fixed In:

Opened: Oct 27, 2018
Severity: 3-Major


TMM runs out of memory and restarts. The memory usage as shown in "tmctl memory_usage_stat", under module line tag "session" is noticed to be high, and keeps growing.


Traffic disrupted while tmm restarts.


The issue is seen when BDoS feature is configured, and if there exits Custom or Auto Generated BDoS Signatures. When such signatures exist, the BDoS one second timer callback leaks memory.


1. Disable BDoS feature. 2. Disable all configured and auto generated BDoS signatures using TMSH command: # cd dos-common # modify security dos dos-signature all { state disabled }

Fix Information


Behavior Change