Bug ID 548259: Client side connection flow can be deleted prior dereferencing it

Last Modified: Sep 13, 2023

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

Known Affected Versions:
11.4.1, 11.5.0, 11.5.1, 11.5.2, 11.5.3, 11.5.4, 11.5.5, 11.5.6, 11.5.7, 11.5.8, 11.5.9, 11.5.10, 11.6.0, 11.6.1, 11.6.2, 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, 12.0.0, 12.0.0 HF1, 12.1.0 HF1, 12.0.0 HF2, 12.1.0 HF2, 12.0.0 HF3, 12.0.0 HF4, 12.1.1 HF1, 12.1.1 HF2, 12.1.2 HF1, 12.1.2 HF2

Fixed In:
12.1.0

Opened: Sep 24, 2015

Severity: 3-Major

Symptoms

There is a rare timing race condition when the client side connection flow was deleted prior the server side de-referencing it. A check for null must be in place to prevent coring the system.

Impact

BIG-IP stop functioning due to the core.

Conditions

The system can core when derefrencing a deleted client side connection flow.

Workaround

N/A

Fix Information

A check of cf->peer is in place to prevent the core.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips