Red Hat Security Advisory: OpenShift Container Platform 4.20.37 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 4.20.37. See the following advisory for the RPM packages for this release: https://access.redhat.com/errata/RHBA-2026:63099 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): * librenswan: IKEv2 Denial of Service via malformed fragmentation (CVE-2026-12413) * sg3_utils: sg3_utils: arbitrary command execution via udev property injection in sg_inq --export (CVE-2026-16313) * libarchive: Double-Free Vulnerability in RAR5 Decompression Logic via dangling filtered_buf pointer in init_unpack() (CVE-2026-14164) * libreswan: badly formatted X.509 certificate can cause an assertion failure that crashes the daemon process (CVE-2026-14957) * librenswan: IKEv1 Denial of Service via RSA-SHA1 (PKCS#1 Version 1.5 Encrypted) authentication payload (CVE-2026-50721) * librenswan: IKEv2 Denial of Service via RSA-SHA1 (PKCS#1 RSASSA-PKCS1-v1_5) authentication payload (CVE-2026-50722) 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
Libreswan, a Linux implementation of IPsec and IKE, has multiple security issues that can cause denial of service or daemon crashes. Specifically, CVE-2026-50721 and CVE-2026-50722 describe denial of service vulnerabilities via RSA-SHA1 (PKCS#1 v1.5) authentication payloads in IKEv1 and IKEv2 respectively. CVE-2026-12413 involves denial of service through malformed fragmentation in IKEv2. CVE-2026-14957 is an assertion failure triggered by a badly formatted X.509 certificate that crashes the libreswan daemon. These vulnerabilities impact the Fast Datapath for Red Hat Enterprise Linux 9 across multiple architectures. Red Hat has released updated libreswan packages (version 5.3.2-1.el9fdp) to fix these issues.
Potential Impact
Successful exploitation of these vulnerabilities can cause denial of service conditions by crashing the libreswan daemon or disrupting IPsec VPN tunnels. This impacts the availability of secure network communications relying on libreswan. There is no indication of code execution or data disclosure. No known exploits are reported in the wild at this time.
Mitigation Recommendations
Red Hat has released updated libreswan packages (version 5.3.2-1.el9fdp) for Red Hat Enterprise Linux Fast Datapath 9 that address these vulnerabilities. Users should apply these official security updates promptly to remediate the issues. For detailed update instructions, refer to Red Hat's advisory and article at https://access.redhat.com/articles/11258. No additional mitigations are specified by the vendor.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:46986
- Cve Count
- 4
- Additional Cves
- ["CVE-2026-14957","CVE-2026-50721","CVE-2026-50722"]
- State
- PUBLISHED
Threat ID: 6a885f13acd9273b493f77d8
Added to database: 08/21/2026, 14:22:11 UTC
Last enriched: 09/10/2026, 18:24:00 UTC
Last updated: 10/05/2026, 18:48:16 UTC
Views: 57
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.