Red Hat Security Advisory: OpenShift Container Platform 4.18.6 bug fix and security update
Red Hat OpenShift Container Platform is Red Hat's cloud computing Kubernetes application platform solution designed for on-premise or private cloud deployments. This advisory contains the container images for Red Hat OpenShift Container Platform 4.18.6. See the following advisory for the RPM packages for this release: https://access.redhat.com/errata/RHSA-2025:3068 Space precludes documenting all of the container images in this advisory. See the following Release Notes documentation, which will be updated shortly for this release, for details about these changes: https://docs.redhat.com/en/documentation/openshift_container_platform/4.18/html/release_notes/ Security Fix(es): * libxml2: Use-After-Free in libxml2 (CVE-2024-56171) * go-jose: Go JOSE's Parsing Vulnerable to Denial of Service (CVE-2025-27144) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section. All OpenShift Container Platform 4.18 users are advised to upgrade to these updated packages and images when they are available in the appropriate release channel. To check for available updates, use the OpenShift CLI (oc) or web console. Instructions for upgrading a cluster are available at https://docs.redhat.com/en/documentation/openshift_container_platform/4.18/html-single/updating_clusters/index#updating-cluster-cli.
AI Analysis
Technical Summary
CVE-2024-56171 is a use-after-free vulnerability in the libxml2 library, a development toolbox implementing various XML standards. This vulnerability affects Red Hat OpenShift Container Platform 4.18 versions prior to 4.18.6 and Red Hat Enterprise Linux 9.2 Extended Update Support packages prior to the fixed release. Red Hat has released updates including OpenShift Container Platform 4.18.6 and libxml2 package updates for RHEL 9.2 to address this issue. The vulnerability is rated as important by Red Hat Product Security. No known exploits in the wild have been reported. The advisory also references other related fixes in the same releases but CVE-2024-56171 specifically concerns libxml2 use-after-free.
Potential Impact
The vulnerability could allow an attacker to cause a use-after-free condition in libxml2, potentially leading to application crashes or other unintended behavior. Red Hat rates the security impact as important, indicating a significant but not critical risk. There are no reports of active exploitation in the wild at this time.
Mitigation Recommendations
Red Hat has released fixed versions of OpenShift Container Platform 4.18.6 and updated libxml2 packages for Red Hat Enterprise Linux 9.2 Extended Update Support. Users should upgrade to these versions as soon as they are available via the appropriate release channels. Instructions for upgrading OpenShift clusters are provided by Red Hat. No additional mitigation steps are indicated beyond applying the official updates.
Red Hat Security Advisory: OpenShift Container Platform 4.18.6 bug fix and security update
Description
Red Hat OpenShift Container Platform is Red Hat's cloud computing Kubernetes application platform solution designed for on-premise or private cloud deployments. This advisory contains the container images for Red Hat OpenShift Container Platform 4.18.6. See the following advisory for the RPM packages for this release: https://access.redhat.com/errata/RHSA-2025:3068 Space precludes documenting all of the container images in this advisory. See the following Release Notes documentation, which will be updated shortly for this release, for details about these changes: https://docs.redhat.com/en/documentation/openshift_container_platform/4.18/html/release_notes/ Security Fix(es): * libxml2: Use-After-Free in libxml2 (CVE-2024-56171) * go-jose: Go JOSE's Parsing Vulnerable to Denial of Service (CVE-2025-27144) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section. All OpenShift Container Platform 4.18 users are advised to upgrade to these updated packages and images when they are available in the appropriate release channel. To check for available updates, use the OpenShift CLI (oc) or web console. Instructions for upgrading a cluster are available at https://docs.redhat.com/en/documentation/openshift_container_platform/4.18/html-single/updating_clusters/index#updating-cluster-cli.
Affected software
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2024-56171 is a use-after-free vulnerability in the libxml2 library, a development toolbox implementing various XML standards. This vulnerability affects Red Hat OpenShift Container Platform 4.18 versions prior to 4.18.6 and Red Hat Enterprise Linux 9.2 Extended Update Support packages prior to the fixed release. Red Hat has released updates including OpenShift Container Platform 4.18.6 and libxml2 package updates for RHEL 9.2 to address this issue. The vulnerability is rated as important by Red Hat Product Security. No known exploits in the wild have been reported. The advisory also references other related fixes in the same releases but CVE-2024-56171 specifically concerns libxml2 use-after-free.
Potential Impact
The vulnerability could allow an attacker to cause a use-after-free condition in libxml2, potentially leading to application crashes or other unintended behavior. Red Hat rates the security impact as important, indicating a significant but not critical risk. There are no reports of active exploitation in the wild at this time.
Mitigation Recommendations
Red Hat has released fixed versions of OpenShift Container Platform 4.18.6 and updated libxml2 packages for Red Hat Enterprise Linux 9.2 Extended Update Support. Users should upgrade to these versions as soon as they are available via the appropriate release channels. Instructions for upgrading OpenShift clusters are provided by Red Hat. No additional mitigation steps are indicated beyond applying the official updates.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2025:3066
- Cve Count
- 2
- Additional Cves
- ["CVE-2025-27144"]
Threat ID: 6a16098ae29bf47b506543e1
Added to database: 05/26/2026, 20:58:50 UTC
Last enriched: 08/17/2026, 21:58:11 UTC
Last updated: 09/10/2026, 19:36:49 UTC
Views: 94
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