Bug ID 580645: snmpd core dump due to null ifAlias name

Last Modified: Mar 14, 2021

Bug Tracker

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

Known Affected Versions:
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,,,,, 12.0.0, 12.0.0 HF1, 12.0.0 HF2, 12.0.0 HF3, 12.0.0 HF4

Fixed In:
12.1.0, 11.6.4

Opened: Mar 15, 2016
Severity: 4-Minor


While processing a query to the IF-MIB's ifXTable, an snmpd core dump and restart occurred.


Minimal impact to SNMP queries. snmpd is automatically restarted.


Occurs if the ifTable's ifAlias attribute is set to a NULL value.


If the ifAlias for a given interface ifIndex has a NULL value, it can be changed to an empty string, or any string, using the snmpset command: snmpset -t30 -v2c -c public localhost IF-MIB::ifAlias.<ifIndex> s ""

Fix Information

snmpd has been modified to check for NULL ifAlias values before attempting to process a set/get SNMP query.

Behavior Change