Bug ID 620844: DoS: tmm core after delete packet type from Device Sweep vector

Last Modified: Nov 07, 2022

Bug Tracker

Affected Product:  See more info
BIG-IP AFM(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, 12.1.3.1, 12.1.3.2, 12.1.3.3, 12.1.3.4, 12.1.3.5, 12.1.3.6, 12.1.3.7, 12.1.4, 12.1.4.1, 12.1.5, 12.1.5.1, 12.1.5.2, 12.1.5.3, 12.1.6

Fixed In:
13.0.0

Opened: Oct 06, 2016
Severity: 2-Critical

Symptoms

During the config change of Sweep vector, when all tmm threads delete the rate tracker, a race condition might occur that could prevent the tracker from being deleted. As a result, some tmm threads might see the new instance, which causes the tmm thread to abort.

Impact

tmm thread might abort if a race condition occurs. Traffic disrupted while tmm restarts.

Conditions

This potential race condition occurs after delete packet type from Device Sweep vector.

Workaround

None.

Fix Information

tmm no longer cores after delete of packet type from Device Sweep vector.

Behavior Change