Red Hat Security Advisory: OpenShift Container Platform 4.19.27 packages and security update

Fixed packages 7

Vulnerabilities 2

• Critical 9.1
  CVE-2025-68121

  Unexpected session resumption in crypto/tls

  During session resumption in crypto/tls, if the underlying Config has its ClientCAs or RootCAs fields mutated between the initial handshake and the resumed handshake, the resumed handshake may succeed when it should have failed. This may happen when a user ca…

  Go standard library crypto/tls langfuse-3-worker katib-suggestion-hyperopt Debian Ubuntu Azure Linux Alpine Wolfi Go
  Feb 5, 2026
• Medium 4.3
  CVE-2025-58183

  Unbounded allocation when parsing GNU sparse map in archive/tar

  tar.Reader does not set a maximum size on the number of sparse region data blocks in GNU tar pax 1.0 sparse files. A maliciously-crafted archive containing a large number of sparse regions can cause a Reader to read an unbounded amount of data from the archiv…

  Go standard library archive/tar katib-suggestion-hyperopt katib-earlystopping Debian Ubuntu Azure Linux Alpine Wolfi Go
  Oct 29, 2025

References

• article
  https://access.redhat.com/security/updates/classification/#moderate
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2407258
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2437111
• advisory
  https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_5876.json
• report
  https://access.redhat.com/security/cve/CVE-2025-58183
• advisory
  https://www.cve.org/CVERecord?id=CVE-2025-58183
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2025-58183
• article
  https://access.redhat.com/errata/RHSA-2026:3122
• article
  https://go.dev/cl/709861
• article
  https://go.dev/issue/75677
• article
  https://groups.google.com/g/golang-announce/c/4Emdl2iQ_bI
• advisory
  https://pkg.go.dev/vuln/GO-2025-4014
• report
  https://access.redhat.com/security/cve/CVE-2025-68121
• advisory
  https://www.cve.org/CVERecord?id=CVE-2025-68121
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2025-68121
• article
  https://go.dev/cl/737700
• article
  https://go.dev/issue/77217
• article
  https://groups.google.com/g/golang-announce/c/K09ubi9FQFk
• advisory
  https://pkg.go.dev/vuln/GO-2026-4337