Bug ID 741108: tmm dosl7 memory leak when X-Forwared-For header value contains a long list of comma separated ip addresses

Last Modified: Jul 03, 2019

Bug Tracker

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

Known Affected Versions:
12.1.0, 12.1.0 HF1, 12.1.0 HF2, 12.1.1, 12.1.1 HF1, 12.1.1 HF2, 12.1.2, 12.1.2 HF1, 12.1.2 HF2, 12.1.3,,,,,,,, 13.0.0, 13.0.0 HF1, 13.0.0 HF2, 13.0.0 HF3, 13.0.1, 13.1.0,,,,,,,,, 13.1.1,,,,,, 14.0.0,,,,,, 14.1.0,,,,,,, 15.0.0

Fixed In:

Opened: Aug 20, 2018
Severity: 2-Critical


tmm memory leak can lead to tmm out-of-memory state.


Unexpected tmm out-of-memory state can be reached, causing sweeper activity and disrupting traffic.


-- ASM provisioned. -- ASM policy attached on a virtual server. -- ASM policy has device ID enabled. -- HTTP profile accept_xff enabled.


Disable accept_xff in HTTP profile that is assigned to a virtual server along with ASM policy.

Fix Information

The leak is now fixed.

Behavior Change