Bug ID 1010617: String operation against DNS resource records cause tmm memory corruption

Last Modified: Nov 16, 2022

Bug Tracker

Affected Product:  See more info
BIG-IP DNS, LTM, TMOS(all modules)

Known Affected Versions:
16.1.0, 16.0.1, 16.0.0.1, 16.0.0, 15.1.4, 15.1.3, 15.1.2.1, 15.1.1, 15.1.0.5, 15.1.0.4, 15.1.0.3, 15.1.0.2, 15.1.0.1, 15.1.0

Fixed In:
17.0.0, 16.1.2.2, 15.1.5.1

Opened: Apr 11, 2021
Severity: 2-Critical

Symptoms

Tmm cores with umem debug enabled.

Impact

Tmm memory corruption. In some situations, tmm could crash. Traffic disrupted while tmm restarts.

Conditions

A string operation is performed against DNS resource records (RRs) in an iRule.

Workaround

Do not use string operation against DNS RRs.

Fix Information

None

Behavior Change