Bug ID 619757: iSession causes routing entry to be prematurely freed

Last Modified: Aug 19, 2026

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

Known Affected Versions:
11.5.4, 11.5.4 hf1, 11.5.4 hf2, 11.5.4 hf3, 11.5.4 hf4, 11.5.5, 11.5.6, 11.5.7, 11.5.8, 11.5.9, 11.5.10, 11.6.0, 11.6.0 hf1, 11.6.0 hf2, 11.6.0 hf3, 11.6.0 hf4, 11.6.0 hf5, 11.6.0 hf6, 11.6.0 hf7, 11.6.0 hf8, 11.6.1, 11.6.1 hf1, 11.6.1 hf2, 11.6.2, 11.6.2 hf1, 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, 12.1.1, 12.1.1 hf1, 12.1.1 hf2

Fixed In:
13.0.0, 12.1.2

Opened: Sep 30, 2016

Severity: 2-Critical

Symptoms

iSession may cause TMM to prematurely free a routing entry resulting in memory corruption and TMM restarting.

Impact

Traffic disrupted while TMM restarts.

Conditions

iSession-enabled virtual.

Workaround

No reasonable workaround short of not using iSession functionality.

Fix Information

iSession no longer causes routing entries to be prematurely freed.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips