Bug ID 610354: TMM crash on invalid memory access to loopback interface stats object

Last Modified: May 29, 2024

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

Known Affected Versions:
11.6.1, 12.0.0, 12.0.0 HF1, 12.1.0 HF1, 12.0.0 HF2, 12.1.0 HF2, 12.0.0 HF3, 12.0.0 HF4, 12.1.1 HF1, 12.1.1 HF2, 12.1.2 HF1, 12.1.2 HF2, 12.1.0, 12.1.1

Fixed In:
13.0.0, 12.1.2, 11.6.2, 11.5.4 HF3

Opened: Aug 11, 2016

Severity: 2-Critical


TMM can crash with segmentation fault when TMM drops packets on its internal loopback interface. TMM needs to update interface stats associated with the loopback interface when dropping packets on that interface. The interface stats object for loopback interface is not allocated yet. That results in segmentation fault.


Traffic disrupted while tmm restarts.


TMM drops packets on its internal loopback interfaces.


No Workaround.

Fix Information


Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips