Bug ID 555343: tmm may crash in fastl4 tcp virtual server

Last Modified: Sep 13, 2023

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

Known Affected Versions:
11.4.1, 11.5.4, 11.5.5, 11.5.6, 11.5.7, 11.5.8, 11.5.9, 11.5.10, 11.6.0, 11.6.1, 11.6.2, 11.6.3, 11.6.3.1, 11.6.3.2, 11.6.3.3, 11.6.3.4, 11.6.4, 11.6.5, 11.6.5.1, 11.6.5.2, 11.6.5.3

Fixed In:
12.1.0

Opened: Oct 30, 2015

Severity: 3-Major

Symptoms

tmm may crash if receives a fragmented packet in a fastl4 tcp virtual server.

Impact

Traffic disrupted while tmm restarts.

Conditions

fastl4 tcp virtual server fragmented packet arrives

Workaround

Enable option "Reassemble IP Fragments" in the fastl4 profile.

Fix Information

tmm no longer crashes on fragmented packets in the fastl4 profile.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips