# Memory leak on Security Gateway cluster members

**Product**: Security Gateways  
**Version**: R81.10 (EOS), R81.20, R82  
**OS**: Gaia  
**Last Modified**: 2026-01-29

## Symptoms

- Continuous increase in memory usage on Security Gateway cluster members.
- Memory usage does not correlate with the number of connections.
- Long-lived connections are observed in the connections table.
- Cluster instability, including issues with ClusterXL Fullsync and Critical Devices (pnotes), requiring failover and reboots to restore service.

## Cause

In the Application Control Rule Base when an "any-any" rule is configured with long-lived connections, each packet match appends the application signature to the connection without verifying if the signature already exists, causing an ever-growing list of duplicate signatures.

## Solution

This problem was fixed. The fix is included in:

- [Check Point Quantum R82.10](https://support.checkpoint.com/results/sk/sk183506)
- [Jumbo Hotfix Accumulator for R82](https://sc1.checkpoint.com/documents/Jumbo_HFA/R82/Default.htm) starting from Take 60
- [Jumbo Hotfix Accumulator for R81.20](https://sc1.checkpoint.com/documents/Jumbo_HFA/R81.20/Default.htm) starting from Take 120
- [Jumbo Hotfix Accumulator for R81.10](https://sc1.checkpoint.com/documents/Jumbo_HFA/R81.10/Default.htm) starting from Take 183

If you choose not to upgrade, Check Point can supply a **Hotfix**. [Contact Check Point Support](https://www.checkpoint.com/support-services/.contact-support/) to get a Hotfix for this issue.

A Support Engineer will make sure the Hotfix is compatible with your environment before providing the Hotfix.

For faster resolution and verification, please collect [CPinfo files](http://supportcontent.checkpoint.com/solutions?id=sk92739) from the Security Management Server and Security Gateways involved in the case.

**Hotfix installation instructions:**  
Refer to [sk168597 - How to install a Hotfix](https://supportcenter.checkpoint.com/supportcenter/portal?eventSubmit_doGoviewsolutiondetails=&solutionid=sk168597).

#### NOTE

This solution has been verified for the specific scenario, described by the combination of Product, Version and Symptoms. It may not work in other scenarios.

## Article Properties

**Access Level**: General  
**Status**: Approved by TAC  
**Date Created**: 2025-10-17  
**Last Modified**: 2026-01-29