Bug ID 1048949: TMM xdata leak on websocket connection with asm policy without websocket profile

Last Modified: Dec 07, 2023

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

Known Affected Versions:
15.1.2,, 15.1.3,, 15.1.4,, 15.1.5,, 15.1.6,, 15.1.7, 15.1.8,,, 17.0.0,,, 17.1.0,,,

Fixed In:
17.1.1, 16.1.4, 15.1.9

Opened: Sep 23, 2021

Severity: 3-Major


Excessive memory consumption, tmm core.


Excessive memory consumption, tmm crash. Traffic disrupted while tmm restarts.


- ASM provisioned - ASM policy attached to a virtual server - Websocket profile isn't attached to the virtual server - Long lived websocket connection with messages


Attach the websocket profile to the virtual server

Fix Information

Fix asm code to avoid buffering websocket message without websocket profile

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips