RHSA-2026:57565HighCVSS 9.1

Red Hat Security Advisory: Red Hat Hardened Images RPMs Security Update

Published
August 20, 2026
Last Modified
October 7, 2026

🔗 CVE IDs covered (4)

CVE-2026-33210 →CVE-2026-54876 →CVE-2026-80212 →CVE-2026-80213 →

📋 Description

CVE-2026-33210 — ruby/json: Ruby JSON: Denial of Service or Information Disclosure via format string injection CVE-2026-54876 — openssl: openssl-src: OpenSSL: Memory leak leads to Denial of Service in OCSP response checking CVE-2026-80212 — resolv: resolv gem: Denial of Service via uncontrolled memory growth from crafted DNS responses CVE-2026-80213 — resolv: Resolv gem: DNS allowlist and egress bypass, and cache poisoning via crafted hostnames

🎯 Affected products50

  • Red Hat Hardened Images
  • ruby4.0-0:4.0.6-37.2.hum1@aarch64 as a component of Red Hat Hardened Images
  • ruby4.0-0:4.0.6-37.2.hum1@src as a component of Red Hat Hardened Images
  • ruby4.0-0:4.0.6-37.2.hum1@x86_64 as a component of Red Hat Hardened Images
  • ruby4.0-bundled-gems-0:4.0.6-37.2.hum1@aarch64 as a component of Red Hat Hardened Images
  • ruby4.0-bundled-gems-0:4.0.6-37.2.hum1@x86_64 as a component of Red Hat Hardened Images
  • ruby4.0-default-gems-0:4.0.6-37.2.hum1@noarch@public-hummingbird-aarch64-rpms as a component of Red Hat Hardened Images
  • ruby4.0-default-gems-0:4.0.6-37.2.hum1@noarch@public-hummingbird-x86_64-rpms as a component of Red Hat Hardened Images
  • ruby4.0-devel-0:4.0.6-37.2.hum1@aarch64 as a component of Red Hat Hardened Images
  • ruby4.0-devel-0:4.0.6-37.2.hum1@x86_64 as a component of Red Hat Hardened Images
  • ruby4.0-doc-0:4.0.6-37.2.hum1@noarch@public-hummingbird-aarch64-rpms as a component of Red Hat Hardened Images
  • ruby4.0-doc-0:4.0.6-37.2.hum1@noarch@public-hummingbird-x86_64-rpms as a component of Red Hat Hardened Images
  • ruby4.0-libs-0:4.0.6-37.2.hum1@aarch64 as a component of Red Hat Hardened Images
  • ruby4.0-libs-0:4.0.6-37.2.hum1@x86_64 as a component of Red Hat Hardened Images
  • rubygem4.0-bigdecimal-0:4.0.1-37.2.hum1@aarch64 as a component of Red Hat Hardened Images
  • rubygem4.0-bigdecimal-0:4.0.1-37.2.hum1@x86_64 as a component of Red Hat Hardened Images
  • rubygem4.0-bundler-0:4.0.16-37.2.hum1@noarch@public-hummingbird-aarch64-rpms as a component of Red Hat Hardened Images
  • rubygem4.0-bundler-0:4.0.16-37.2.hum1@noarch@public-hummingbird-x86_64-rpms as a component of Red Hat Hardened Images
  • rubygem4.0-devel-0:4.0.16-37.2.hum1@noarch@public-hummingbird-aarch64-rpms as a component of Red Hat Hardened Images
  • rubygem4.0-devel-0:4.0.16-37.2.hum1@noarch@public-hummingbird-x86_64-rpms as a component of Red Hat Hardened Images
  • rubygem4.0-io-console-0:0.8.2-37.2.hum1@aarch64 as a component of Red Hat Hardened Images
  • rubygem4.0-io-console-0:0.8.2-37.2.hum1@x86_64 as a component of Red Hat Hardened Images
  • rubygem4.0-irb-0:1.16.0-37.2.hum1@noarch@public-hummingbird-aarch64-rpms as a component of Red Hat Hardened Images
  • rubygem4.0-irb-0:1.16.0-37.2.hum1@noarch@public-hummingbird-x86_64-rpms as a component of Red Hat Hardened Images
  • rubygem4.0-json-0:2.18.0-37.2.hum1@aarch64 as a component of Red Hat Hardened Images
  • rubygem4.0-json-0:2.18.0-37.2.hum1@x86_64 as a component of Red Hat Hardened Images
  • rubygem4.0-minitest-0:6.0.0-37.2.hum1@noarch@public-hummingbird-aarch64-rpms as a component of Red Hat Hardened Images
  • rubygem4.0-minitest-0:6.0.0-37.2.hum1@noarch@public-hummingbird-x86_64-rpms as a component of Red Hat Hardened Images
  • rubygem4.0-power_assert-0:3.0.1-37.2.hum1@noarch@public-hummingbird-aarch64-rpms as a component of Red Hat Hardened Images
  • rubygem4.0-power_assert-0:3.0.1-37.2.hum1@noarch@public-hummingbird-x86_64-rpms as a component of Red Hat Hardened Images
  • +20 more not shown

✅ Remediation

For details on how to apply this update, which includes the changes described in this advisory, refer to: https://images.redhat.com/ Workaround: No broadly applicable mitigation is available. If an affected client application provides a configuration setting for OCSP response checking, operators can temporarily disable it where their certificate revocation policy permits. This blocks the vulnerable response-checking path but removes OCSP-based revocation checks. Clients that must keep OCSP response checking enabled remain exposed. Workaround: Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.

🔗 References (8)