RHSA-2026:79575HighCVSS 7.5

Red Hat Security Advisory: RHACS 4.11.5 security and bug fix update

Published
October 8, 2026
Last Modified
October 29, 2026

🔗 CVE IDs covered (2)

CVE-2026-84304 →CVE-2026-84445 →

📋 Description

CVE-2026-84304 — google.golang.org/grpc: gRPC-Go: Denial of Service via HTTP/2 DATA Frame Fragmentation CVE-2026-84445 — google.golang.org/grpc: gRPC-Go: Denial of Service via malformed RPC requests

🎯 Affected products48

  • Red Hat Advanced Cluster Security for Kubernetes for IBM Z and LinuxONE 4.11
  • registry.redhat.io/advanced-cluster-security/rhacs-central-db-rhel9@sha256:784fe7fbee39bc257c8858d5ed2df745e9ff736c9243c48fce5575b6020b9a26_arm64 as a component of Red Hat Advanced Cluster Security for Kubernetes for IBM Z and LinuxONE 4.11
  • registry.redhat.io/advanced-cluster-security/rhacs-central-db-rhel9@sha256:ca2c680c80b26e8771708944cf164977a841f5c6a33876067c356d4eeab451ae_ppc64le as a component of Red Hat Advanced Cluster Security for Kubernetes for IBM Z and LinuxONE 4.11
  • registry.redhat.io/advanced-cluster-security/rhacs-central-db-rhel9@sha256:dafbca418faf0151dbb80416fa5fec5a91582cfb4a4b364dfa2e100d15047e32_amd64 as a component of Red Hat Advanced Cluster Security for Kubernetes for IBM Z and LinuxONE 4.11
  • registry.redhat.io/advanced-cluster-security/rhacs-central-db-rhel9@sha256:dc7378c0f901896b7b3fe521290c0face3bcf2fef01f7a58273e555ed8c7b6de_s390x as a component of Red Hat Advanced Cluster Security for Kubernetes for IBM Z and LinuxONE 4.11
  • registry.redhat.io/advanced-cluster-security/rhacs-collector-rhel9@sha256:0e605e654f5413da0fb8ab16adc879f8e2eb016f66c4f5f023f3cacf6d6bb585_ppc64le as a component of Red Hat Advanced Cluster Security for Kubernetes for IBM Z and LinuxONE 4.11
  • registry.redhat.io/advanced-cluster-security/rhacs-collector-rhel9@sha256:4e1f0cd1e8c87022075feaf237cba72ee7fb46d648064759ee8d99a62d878a50_arm64 as a component of Red Hat Advanced Cluster Security for Kubernetes for IBM Z and LinuxONE 4.11
  • registry.redhat.io/advanced-cluster-security/rhacs-collector-rhel9@sha256:7520f2b189854da14364a51b036b628f606df7e7ac0c2f06f438422efd66ba88_s390x as a component of Red Hat Advanced Cluster Security for Kubernetes for IBM Z and LinuxONE 4.11
  • registry.redhat.io/advanced-cluster-security/rhacs-collector-rhel9@sha256:88e71339e1ed45a70abcbd40aad3e99cbe7db8f58e7f5d85d585d4aa53c1fe2e_amd64 as a component of Red Hat Advanced Cluster Security for Kubernetes for IBM Z and LinuxONE 4.11
  • registry.redhat.io/advanced-cluster-security/rhacs-fact-rhel9@sha256:02bb0f99fd78cc668940a14bbab0f85945a38fcc59518905f22cb78664127ad2_arm64 as a component of Red Hat Advanced Cluster Security for Kubernetes for IBM Z and LinuxONE 4.11
  • registry.redhat.io/advanced-cluster-security/rhacs-fact-rhel9@sha256:5910c53267e934bb61cd2116951022a9ae9df9f0a62d9362f900346aa85b832d_amd64 as a component of Red Hat Advanced Cluster Security for Kubernetes for IBM Z and LinuxONE 4.11
  • registry.redhat.io/advanced-cluster-security/rhacs-main-rhel9@sha256:2dc54acb63dd6975d9e42e164e1a49517a54731ccc87509afac67bc184a9d08a_amd64 as a component of Red Hat Advanced Cluster Security for Kubernetes for IBM Z and LinuxONE 4.11
  • registry.redhat.io/advanced-cluster-security/rhacs-main-rhel9@sha256:51944d40d87d221c668fc2ada16ee8442f66ad36e5d15a2311a1ab7d10db1493_ppc64le as a component of Red Hat Advanced Cluster Security for Kubernetes for IBM Z and LinuxONE 4.11
  • registry.redhat.io/advanced-cluster-security/rhacs-main-rhel9@sha256:678e0f7e9e89a96763a7cb147f205ad28c8c7bcb84e1246fa8e15fb0f76ac80d_s390x as a component of Red Hat Advanced Cluster Security for Kubernetes for IBM Z and LinuxONE 4.11
  • registry.redhat.io/advanced-cluster-security/rhacs-main-rhel9@sha256:9ba4f703237601976714404d1f698d716d7dab6407fa08b0e0a2100bfa920331_arm64 as a component of Red Hat Advanced Cluster Security for Kubernetes for IBM Z and LinuxONE 4.11
  • registry.redhat.io/advanced-cluster-security/rhacs-operator-bundle@sha256:c928cec8449aa90f69b603236051e1720d2bd5bd24f20a57c8dec342e7abb4b4_amd64 as a component of Red Hat Advanced Cluster Security for Kubernetes for IBM Z and LinuxONE 4.11
  • registry.redhat.io/advanced-cluster-security/rhacs-rhel9-operator@sha256:04a8a4fa3564d72c7306efb86b5777424b036fda4dce11d41af34ae0610d1cc5_arm64 as a component of Red Hat Advanced Cluster Security for Kubernetes for IBM Z and LinuxONE 4.11
  • registry.redhat.io/advanced-cluster-security/rhacs-rhel9-operator@sha256:7567be707b89ffda1534b847a3456b421c896481c7afb2eeae6e6ec2c7fc21ec_ppc64le as a component of Red Hat Advanced Cluster Security for Kubernetes for IBM Z and LinuxONE 4.11
  • registry.redhat.io/advanced-cluster-security/rhacs-rhel9-operator@sha256:85ee3ed1598937d87a1982a1001fd4708f68dffe06ae35dc89d866523ce69980_amd64 as a component of Red Hat Advanced Cluster Security for Kubernetes for IBM Z and LinuxONE 4.11
  • registry.redhat.io/advanced-cluster-security/rhacs-rhel9-operator@sha256:f1b6a26111699861172990f2a1b3bbaf84771ba3d83d33b5fc523178a9ce9e5b_s390x as a component of Red Hat Advanced Cluster Security for Kubernetes for IBM Z and LinuxONE 4.11
  • registry.redhat.io/advanced-cluster-security/rhacs-roxctl-rhel9@sha256:1d0592d8d44ae6ff500e7f6ac8561cb1506a9c86f3f4d040440f0a9395b7f683_ppc64le as a component of Red Hat Advanced Cluster Security for Kubernetes for IBM Z and LinuxONE 4.11
  • registry.redhat.io/advanced-cluster-security/rhacs-roxctl-rhel9@sha256:909ad0a3e56d5c696780693907ac43d6f641b544eca51d0695cb13d2edb7c0e5_arm64 as a component of Red Hat Advanced Cluster Security for Kubernetes for IBM Z and LinuxONE 4.11
  • registry.redhat.io/advanced-cluster-security/rhacs-roxctl-rhel9@sha256:a367eff4ece32b3c57c85aa7e73561355b700e205719df076aa3b3084f4a17c5_amd64 as a component of Red Hat Advanced Cluster Security for Kubernetes for IBM Z and LinuxONE 4.11
  • registry.redhat.io/advanced-cluster-security/rhacs-roxctl-rhel9@sha256:b5a697008b879bff6d32faa0e5e2ed6cb9a2c10d3dc91f876efe66e5d8566048_s390x as a component of Red Hat Advanced Cluster Security for Kubernetes for IBM Z and LinuxONE 4.11
  • registry.redhat.io/advanced-cluster-security/rhacs-scanner-db-rhel9@sha256:053c869d48dd00528034432098b28def714ac30d9a9079321b919370e3ce854d_amd64 as a component of Red Hat Advanced Cluster Security for Kubernetes for IBM Z and LinuxONE 4.11
  • registry.redhat.io/advanced-cluster-security/rhacs-scanner-db-rhel9@sha256:358aeb95a34990bf67d744d262b98ff75180e799799a67692bb2b8e8e960ce8b_ppc64le as a component of Red Hat Advanced Cluster Security for Kubernetes for IBM Z and LinuxONE 4.11
  • registry.redhat.io/advanced-cluster-security/rhacs-scanner-db-rhel9@sha256:4a28fc213cd138f1e9bbbfe4c4ac38a14e2279371b6e3d03b702c7554c952433_s390x as a component of Red Hat Advanced Cluster Security for Kubernetes for IBM Z and LinuxONE 4.11
  • registry.redhat.io/advanced-cluster-security/rhacs-scanner-db-rhel9@sha256:9129fcb6cc05307e45a23547d2470252cb51d15407d4f79ef62d3e5f3f7cb982_arm64 as a component of Red Hat Advanced Cluster Security for Kubernetes for IBM Z and LinuxONE 4.11
  • registry.redhat.io/advanced-cluster-security/rhacs-scanner-db-slim-rhel9@sha256:4392489c50ffecbe98e9709fe5f700fca3d3f02117a97e1b868112d2cfae77fb_arm64 as a component of Red Hat Advanced Cluster Security for Kubernetes for IBM Z and LinuxONE 4.11
  • registry.redhat.io/advanced-cluster-security/rhacs-scanner-db-slim-rhel9@sha256:8d09eefa7977479146e9d027e9bc668e057fc9ea811acc6fb783f0762fe71ab2_s390x as a component of Red Hat Advanced Cluster Security for Kubernetes for IBM Z and LinuxONE 4.11
  • +18 more not shown

✅ Remediation

If you are using an earlier version of RHACS, you are advised to upgrade to the version of RHACS mentioned in the synopsis and release notes in order to take advantage of the enhancements, bug fixes, and/or security patches in the release. 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 (6)