RHSA-2026:34098: Critical: OpenShift Container Platform 4.17.55 bug fix and security update

Red Hat OpenShift Container Platform is Red Hat's cloud computingKubernetes application platform solution designed for on-premise or privatecloud deployments.This advisory contains the container images for Red Hat OpenShift ContainerPlatform 4.17.55. See the following advisory for the RPM packages for thisrelease:https://access.redhat.com/errata/RHSA-2026:34097 Space precludes documenting all of the container images in this advisory.See the following Release Notes documentation, which will be updatedshortly for this release, for details about these changes:https://docs.redhat.com/en/documentation/openshiftcontainerplatform/4.17/html/releasenotes/ Security Fix(es): kernel: ip6tunnel: clear skb2->cb[] in ip4ip6err() (CVE-2026-43037) libcap: libcap: Privilege escalation via TOCTOU race condition in capsetfile() (CVE-2026-4878) OpenSSH: OpenSSH: Privilege escalation via scp legacy protocol when not preserving file mode (CVE-2026-35385) sudo: Sudo: Privilege escalation due to failure in privilege drop calls (CVE-2026-35535) jq: out-of-bounds read in jvparsesized() on error formatting for non-NUL-terminated buffers (CVE-2026-39979) jq: jq: Denial of Service via crafted JSON object causing hash collisions (CVE-2026-40164) rsync: Rsync: Use-after-free vulnerability in extended attribute handling (CVE-2026-41035) kernel: "Dirty Frag" ESP XFRM variant is a new universal Local Privilege Escalation (LPE) vulnerability in the Linux kernel (CVE-2026-43284) kernel: "Fragnesia" is a variant of Dirty Frag vulnerability in the ESP/XFRM leading to Local Privilege Escalation (LPE) vulnerability in theLinux kernel (CVE-2026-46300) kernel: net/sched: actpedit: extend the writable skb range per key (CVE-2026-46331)For more details about the security issue(s), including the impact, a CVSSscore, acknowledgments, and other related information, refer to the CVEpage(s) listed in the References section.All OpenShift Container Platform 4.17 users are advised to upgrade to theseupdated packages and images when they are available in the appropriaterelease channel. To check for available updates, use the OpenShift CLI (oc)or web console. Instructions for upgrading a cluster are available athttps://docs.redhat.com/en/documentation/openshiftcontainerplatform/4.17/html-single/updatingclusters/index#updating-cluster-cli.

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