Red Hat Security Advisory: OpenShift Container Platform 4.20.0 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 4.20.0. See the following advisory for the RPM packages for this release: https://access.redhat.com/errata/149403 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/4.20/html/release_notes/ Security Fix(es): * libarchive: Double free at archive_read_format_rar_seek_data() in archive_read_support_format_rar.c (CVE-2025-5914) * unbound: Unbound Cache poisoning (CVE-2025-5994) * podman: podman missing TLS verification (CVE-2025-6032) * sqlite: Integer Truncation in SQLite (CVE-2025-6965) * libxml: Heap use after free (UAF) leads to Denial of service (DoS) (CVE-2025-49794) * libxml: Type confusion leads to Denial of service (DoS) (CVE-2025-49796) 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 4.20 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/4.20/html-single/updating_clusters/index#updating-cluster-cli.
AI Analysis
Technical Summary
This advisory covers multiple security vulnerabilities fixed in Red Hat OpenShift Container Platform 4.20.0. The key issues include a double free vulnerability in libarchive's RAR format support (CVE-2025-5914), unbound DNS cache poisoning (CVE-2025-5994), missing TLS verification in podman (CVE-2025-6032), integer truncation in SQLite (CVE-2025-6965), and heap use after free and type confusion vulnerabilities in libxml causing denial of service (CVE-2025-49794 and CVE-2025-49796). These vulnerabilities have been rated with an overall security impact of Important by Red Hat Product Security. The advisory provides updated container images and RPM packages to remediate these issues. Instructions for upgrading clusters using OpenShift CLI or web console are available in the vendor documentation. The affected versions are OpenShift Container Platform 4.20.x prior to 4.21.0 across multiple architectures including x86_64, s390x, ppc64le, and aarch64. The vendor advisory is the authoritative source for patch availability and upgrade instructions.
Potential Impact
The vulnerabilities fixed in this update can lead to various security impacts including potential denial of service (libxml heap use after free and type confusion), cache poisoning (unbound), missing TLS verification which could undermine secure communications (podman), integer truncation (SQLite), and memory corruption due to double free (libarchive). These issues could affect the stability, security, and trustworthiness of the OpenShift Container Platform deployments. No active exploitation has been reported so far.
Mitigation Recommendations
Red Hat has released official fixes for these vulnerabilities in OpenShift Container Platform 4.20.0. Users should upgrade to the updated container images and RPM packages available through the appropriate release channels. Upgrades can be performed using the OpenShift CLI (oc) or the web console following the vendor's documented procedures. No additional mitigation steps are required beyond applying the official updates.
Red Hat Security Advisory: OpenShift Container Platform 4.20.0 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 4.20.0. See the following advisory for the RPM packages for this release: https://access.redhat.com/errata/149403 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/4.20/html/release_notes/ Security Fix(es): * libarchive: Double free at archive_read_format_rar_seek_data() in archive_read_support_format_rar.c (CVE-2025-5914) * unbound: Unbound Cache poisoning (CVE-2025-5994) * podman: podman missing TLS verification (CVE-2025-6032) * sqlite: Integer Truncation in SQLite (CVE-2025-6965) * libxml: Heap use after free (UAF) leads to Denial of service (DoS) (CVE-2025-49794) * libxml: Type confusion leads to Denial of service (DoS) (CVE-2025-49796) 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 4.20 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/4.20/html-single/updating_clusters/index#updating-cluster-cli.
Affected software
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This advisory covers multiple security vulnerabilities fixed in Red Hat OpenShift Container Platform 4.20.0. The key issues include a double free vulnerability in libarchive's RAR format support (CVE-2025-5914), unbound DNS cache poisoning (CVE-2025-5994), missing TLS verification in podman (CVE-2025-6032), integer truncation in SQLite (CVE-2025-6965), and heap use after free and type confusion vulnerabilities in libxml causing denial of service (CVE-2025-49794 and CVE-2025-49796). These vulnerabilities have been rated with an overall security impact of Important by Red Hat Product Security. The advisory provides updated container images and RPM packages to remediate these issues. Instructions for upgrading clusters using OpenShift CLI or web console are available in the vendor documentation. The affected versions are OpenShift Container Platform 4.20.x prior to 4.21.0 across multiple architectures including x86_64, s390x, ppc64le, and aarch64. The vendor advisory is the authoritative source for patch availability and upgrade instructions.
Potential Impact
The vulnerabilities fixed in this update can lead to various security impacts including potential denial of service (libxml heap use after free and type confusion), cache poisoning (unbound), missing TLS verification which could undermine secure communications (podman), integer truncation (SQLite), and memory corruption due to double free (libarchive). These issues could affect the stability, security, and trustworthiness of the OpenShift Container Platform deployments. No active exploitation has been reported so far.
Mitigation Recommendations
Red Hat has released official fixes for these vulnerabilities in OpenShift Container Platform 4.20.0. Users should upgrade to the updated container images and RPM packages available through the appropriate release channels. Upgrades can be performed using the OpenShift CLI (oc) or the web console following the vendor's documented procedures. No additional mitigation steps are required 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-2025:15397
- Cve Count
- 6
- Additional Cves
- ["CVE-2025-5994","CVE-2025-6032","CVE-2025-6965","CVE-2025-49794","CVE-2025-49796"]
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a1f4e87e29bf47b50081669
Added to database: 06/02/2026, 21:43:35 UTC
Last enriched: 08/13/2026, 20:16:11 UTC
Last updated: 09/10/2026, 19:42:37 UTC
Views: 84
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