RHSA-2026:66521 - Security Advisory

Topic

Logging for Red Hat OpenShift - 6.6.1

Description

Red Hat OpenShift Logging 6.6.1 is a cluster-wide logging solution for OpenShift that collects and manages applications, infrastructure, and audit logs.

Solution

For OpenShift Container Platform 4.22 see the following documentation, which will be updated shortly for this release, for important instructions on how to upgrade your cluster and fully apply this errata update:

https://docs.redhat.com/en/documentation/openshift_container_platform/4.22/html/release_notes/ocp-4-22-release-notes

For Red Hat OpenShift Logging 6.6, see the following instructions to apply this update:

https://docs.redhat.com/en/documentation/red_hat_openshift_logging/6.6

Affected Products

• Logging Subsystem for Red Hat OpenShift

Fixes

• BZ - 2456252
• BZ - 2457729
• BZ - 2480675
• BZ - 2480678
• BZ - 2480680
• BZ - 2480684
• BZ - 2480685
• BZ - 2480687
• BZ - 2480688
• BZ - 2480689
• BZ - 2484830
• BZ - 2493766
• BZ - 2503746
• BZ - 2504233
• BZ - 2509566
• BZ - 2515815
• BZ - 2515820
• BZ - 2515827
• BZ - 2515838
• BZ - 2515839
• BZ - 2515840
• BZ - 2518147
• BZ - 2519913
• LOG-10077 - Vector stops forwarding logs over UDP after syslog server failover
• LOG-10078 - "can't abort infallible function" warning is logged with payload_key in Logging 6.6 (even after LOG-9564 was fixed)
• LOG-10079 - "ClusterLogForwarder.spec.outputs.syslog.severity: informational" generates numerous warning messages in Logging 6.6 (The fix for LOG-9563 is incomplete)
• LOG-10080 - Syslog forwarding adds empty KubernetesMinimal prefixes to audit and journald messages after upgrade from 6.2 to 6.6
• LOG-8139 - Support for OpenShift Loki Operator and OCP BYO / External Authentication (OAuth Removal Handling)
• LOG-8727 - LokiStack gateway OIDC authentication fails when issuerCA contains multiple certificates
• LOG-9386 - One or more collector pods fail to start with the following error "Configuration error. error=Sink "output_default_lokistack_audit": error occurred when building buffer"
• LOG-9388 - The Operator fails to translate the omitManagedFields: true directive into the generated Vector configuration (instance-config.yaml).
• LOG-9677 - [release-6.6] Mapping failed: error="function call error for \"match_any\" where expected string, got null
• LOG-9829 - [release-6.6]Vector: Too many open files (os error 24)

CVEs

• CVE-2026-15792
• CVE-2026-17106
• CVE-2026-18140
• CVE-2026-29181
• CVE-2026-33818
• CVE-2026-35469
• CVE-2026-39828
• CVE-2026-39830
• CVE-2026-39831
• CVE-2026-39832
• CVE-2026-39835
• CVE-2026-41178
• CVE-2026-42508
• CVE-2026-46595
• CVE-2026-46597
• CVE-2026-46604
• CVE-2026-56852
• CVE-2026-56853
• CVE-2026-56858
• CVE-2026-56859
• CVE-2026-56860
• CVE-2026-56862
• CVE-2026-75593

References

• https://access.redhat.com/security/updates/classification/