Bug ID 639764: Crash when searching external data-groups with records that do not have values

Last Modified: Nov 07, 2022

Bug Tracker

Affected Product:  See more info
BIG-IP LTM(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,,,,,,,, 12.1.4,, 12.1.5, 13.0.0

Fixed In:
13.1.0, 13.0.0 HF1,

Opened: Jan 17, 2017
Severity: 2-Critical


The TMM may crash when search through an external data-group that has at least one value with empty value.


Traffic disrupted while tmm restarts.


For example, this occurs if data-group is defined as follows: the key for network has no value: network := "network", network, network := "network", A search in the data-group above with -value or -element options where at least one of the result records has no value will most likely result in a TMM crash.


Make sure that every record in the external data-groups has a value.

Fix Information

Searching values in an external data-group where result will contain at least one value with an empty value no longer results in a TMM crash. A -value search will yield an empty string for the records that do not have a value.

Behavior Change