Last Modified: Apr 28, 2025
Affected Product(s):
BIG-IP APM
Known Affected Versions:
11.5.1, 11.5.1 HF1, 11.5.1 HF2, 11.5.1 HF3, 11.5.1 HF4, 11.5.1 HF5, 11.5.1 HF6, 11.5.1 HF7, 11.5.1 HF8, 11.5.1 HF9, 11.5.1 HF10, 11.5.1 HF11, 11.5.2, 11.5.2 HF1, 11.5.3, 11.5.3 HF1, 11.6.0, 11.6.0 HF1, 11.6.0 HF2, 11.6.0 HF3, 11.6.0 HF4, 11.6.0 HF5
Fixed In:
11.6.0 HF6, 11.5.3 HF2
Opened: Aug 19, 2015 Severity: 3-Major
A multimodule HA pair under high load fails over.
Instability in HA.
This can occur with multiple modules configured (AFM, ASM, APM, GTM, LTM) and high concurrent load.
None.
Fix to free memory with same length as used for alloc using umem_alloc.