Bug ID 533562: Memory leak in CGNAT can result in crash

Last Modified: Oct 01, 2018

Bug Tracker

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

Known Affected Versions:
11.4.0, 11.4.1, 11.5.0, 11.5.1, 11.5.1 HF1, 11.5.1 HF10, 11.5.1 HF11, 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, 11.5.2, 11.5.2 HF1, 11.5.3, 11.5.3 HF1, 11.5.3 HF2, 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:
12.0.0, 11.6.0 HF6, 11.5.4, 11.4.1 HF10

Opened: Jul 14, 2015
Severity: 2-Critical
Related AskF5 Article:
K15320373

Symptoms

tmm leaks cmp memory, resulting in crash. 'tmctl memory_usage_stat' reports very high cmp memory utilization.

Impact

BIG-IP system might run out of memory and crash.

Conditions

Configure hairpin mode or inbound connection handling set to automatic.

Workaround

Avoid hairpin mode or inbound connection handling set to automatic.

Fix Information

Fixed CGNAT memory leak that occurred when configured for hairpin mode or when inbound connection handling is set to automatic.

Behavior Change