Bug ID 1787981: Memory leak in ips_pcb_cache

Last Modified: Apr 03, 2025

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

Known Affected Versions:
16.1.0, 16.1.1, 16.1.2, 16.1.2.1, 16.1.2.2, 16.1.3, 16.1.3.1, 16.1.3.2, 16.1.3.3, 16.1.3.4, 16.1.3.5, 16.1.4, 16.1.4.1, 16.1.4.2, 16.1.4.3, 16.1.5, 16.1.5.1, 16.1.5.2

Opened: Jan 22, 2025

Severity: 3-Major

Symptoms

The ips_pcb_cache stat keeps increasing while the system is passing traffic.

Impact

Increase memory usage of ips_pcb_cache and may lead to tmm crash.

Conditions

- IPS licensed and provisioned. - Enable the HTTP service on the IPS profile. - HTTPS traffic flow in progress.

Workaround

Add port 443 to the HTTP service on the IPS profile to process HTTPS traffic.

Fix Information

None

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips