Bug ID 525882: SSL client certificate verification during SSL handshake might leak a reference to the issuer certificate.

Last Modified: Jul 18, 2026

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

Known Affected Versions:
11.6.0, 11.6.0 hf1, 11.6.0 hf2, 11.6.0 hf3, 11.6.0 hf4, 11.6.0 hf5, 11.6.0 hf6, 11.6.0 hf7, 11.6.0 hf8

Fixed In:
12.0.0, 11.6.1

Opened: May 30, 2015

Severity: 2-Critical

Related Article: K29113720

Symptoms

SSL client certificate verification during SSL handshake might leak a reference to the issuer certificate causing TMM memory leakage over time.

Impact

TMM memory leak.

Conditions

clientssl in use with the client presenting a certificate for verification.

Workaround

None.

Fix Information

Client certificate verification now releases all references and the memory leak no longer occurs.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips