Red Hat Security Advisory: OpenShift Container Platform 4.22.7 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 4.22.7. See the following advisory for the RPM packages for this release: https://access.redhat.com/errata/RHBA-2026:44229 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/4.22/html/release_notes/ Security Fix(es): * kernel: ip6_tunnel: clear skb2->cb[] in ip4ip6_err() (CVE-2026-43037) * cifs-utils: local privilege escalation via forged cifs.spnego key description in cifs.upcall (CVE-2026-12505) * podman: Podman: Information disclosure via malicious container image environment variables (CVE-2026-57231) 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 4.22 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/4.22/html-single/updating_clusters/index#updating-cluster-cli.
Affected software
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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This advisory covers Red Hat OpenShift Container Platform 4.22.7, which contains security updates for several vulnerabilities. Notably, CVE-2026-12505 is a local privilege escalation vulnerability in cifs-utils caused by a forged cifs.spnego key description in cifs.upcall. Additional fixes include a kernel vulnerability (CVE-2026-43037) related to clearing skb2->cb[] in ip4ip6_err() and an information disclosure issue in Podman (CVE-2026-57231) via malicious container image environment variables. The advisory confirms that these issues are addressed in the updated container images and RPM packages. Users should upgrade to the fixed versions to remediate these vulnerabilities.
Potential Impact
The vulnerabilities fixed in this update include a critical local privilege escalation in cifs-utils, which could allow an attacker with local access to gain elevated privileges. The kernel fix addresses a potential issue in IPv6 tunneling code, and the Podman fix mitigates information disclosure risks from malicious container images. These vulnerabilities collectively pose significant security risks if left unpatched, particularly in environments running OpenShift Container Platform 4.22.
Mitigation Recommendations
A patch is available in Red Hat OpenShift Container Platform 4.22.7. Users should upgrade to this version using the OpenShift CLI (oc) or web console as soon as the update is available in their release channel. Detailed upgrade instructions are provided by Red Hat in their official documentation. No additional mitigation steps are indicated beyond applying the official update.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:39576
- Cve Count
- 1
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a577ef368715ace43b415d1
Added to database: 07/15/2026, 12:37:07 UTC
Last enriched: 08/11/2026, 20:30:28 UTC
Last updated: 10/14/2026, 18:48:18 UTC
Views: 165
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