Bug ID 585094: tmm crash in FPS plugin

Last Modified: Mar 17, 2021

Bug Tracker

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

Known Affected Versions:
11.6.0, 11.6.0 HF1, 11.6.0 HF2, 11.6.0 HF3, 11.6.0 HF4, 11.6.0 HF5, 11.6.0 HF6, 11.6.0 HF7, 11.6.0 HF8, 11.6.1, 11.6.1 HF1, 11.6.1 HF2, 11.6.2, 11.6.2 HF1, 11.6.3,,,,, 11.6.4, 11.6.5,,,

Opened: Apr 04, 2016
Severity: 3-Major


Internal TMM message counter is not decreased correctly.


Possible TMM crash.


When FPS sources a response (like injected JavaScript). And at some specific circumstances inside TMM (order of traffic events). When there are many requests on a persistent HTTP connection.


Limit the number of requests on a persistent HTTP connection (e.g. max-requests=64). This prevents the counter - which is 7 bits long - to overflow.

Fix Information


Behavior Change