Bug ID 500234: TMM may core during failover due to invalid memory access in IPsec components

Last Modified: Apr 10, 2019

Bug Tracker

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

Known Affected Versions:
11.5.0, 11.5.1, 11.5.1 HF1, 11.5.1 HF10, 11.5.1 HF11, 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, 11.5.2, 11.5.2 HF1, 11.6.0, 11.6.0 HF1, 11.6.0 HF2, 11.6.0 HF3, 11.6.0 HF4, 11.6.0 HF5

Fixed In:
12.0.0, 11.6.0 HF6, 11.5.3

Opened: Jan 09, 2015
Severity: 3-Major
Related AskF5 Article:


TMM cores when transitioning from standby to active.


Traffic disrupted while tmm restarts.


This might occur when the following conditions are met: -- An IPsec tunnel is enabled. -- The BIG-IP system is a member of an HA pair. -- The BIG-IP system transitions from standby to active.



Fix Information

Fixed a race condition that might have caused IPsec components to access previously freed memory.

Behavior Change