VDB
RHSA-2026:54552
RHSA-2026:54552
PUBLISHED
CVSS 7.5 HIGH
A flaw was found in the `net` package of Go (golang), specifically when using the `LookupCNAME` function with the `cgo` DNS resolver. A remote attacker could exploit this by providing a very long Canonical Name (CNAME) response. This can trigger a double-free of C memory, leading to a crash and a Denial of Service (DoS) for the affected application.
Risk Scores
CVSS 3.1
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Red Hat | openshift-clients-0:4.19.0-202608111604.p2.gb2a93a6.assembly.stream.el8.s390x as a component of Red Hat OpenShift Container Platform 4.19 | 4.19.0-202608111604.p2.gb2a93a6.assembly.stream.el8.s390x, 4.19.0-202608111604.p2.gb2a93a6.assembly.stream.el8.s390x |
| Red Hat | openshift-kube-apiserver-0:4.19.0-202608111604.p2.g63adf01.assembly.stream.el9.aarch64 as a component of Red Hat OpenShift Container Platform 4.19 | 4.19.0-202608111604.p2.g63adf01.assembly.stream.el9.aarch64, 4.19.0-202608111604.p2.g63adf01.assembly.stream.el9.aarch64 |
| Red Hat | skopeo-tests-2:1.18.1-7.rhaos4.19.el9.x86_64 as a component of Red Hat OpenShift Container Platform 4.19 | 1.18.1-7.rhaos4.19.el9.x86, 1.18.1-7.rhaos4.19.el9.x86 |
| Red Hat | openshift-kube-controller-manager-0:4.19.0-202608111604.p2.g63adf01.assembly.stream.el9.ppc64le as a component of Red Hat OpenShift Container Platform 4.19 | 4.19.0-202608111604.p2.g63adf01.assembly.stream.el9.ppc64le, 4.19.0-202608111604.p2.g63adf01.assembly.stream.el9.ppc64le |
| Red Hat | cri-o-0:1.32.13-9.rhaos4.19.git2100f27.el9.s390x as a component of Red Hat OpenShift Container Platform 4.19 | 1.32.13-9.rhaos4.19.git2100f27.el9.s390x, 1.32.13-9.rhaos4.19.git2100f27.el9.s390x |
| Red Hat | skopeo-debuginfo-2:1.18.1-7.rhaos4.19.el9.aarch64 as a component of Red Hat OpenShift Container Platform 4.19 | 1.18.1-7.rhaos4.19.el9.aarch64 |
| Red Hat | cri-o-debugsource-0:1.32.13-9.rhaos4.19.git2100f27.el9.aarch64 as a component of Red Hat OpenShift Container Platform 4.19 | 1.32.13-9.rhaos4.19.git2100f27.el9.aarch64 |
| Red Hat | openshift-kubelet-0:4.19.0-202608111604.p2.g63adf01.assembly.stream.el9.s390x as a component of Red Hat OpenShift Container Platform 4.19 | 4.19.0-202608111604.p2.g63adf01.assembly.stream.el9.s390x, 4.19.0-202608111604.p2.g63adf01.assembly.stream.el9.s390x |
| Red Hat | cri-o-debuginfo-0:1.32.13-9.rhaos4.19.git2100f27.el9.x86_64 as a component of Red Hat OpenShift Container Platform 4.19 | 1.32.13-9.rhaos4.19.git2100f27.el9.x86, 1.32.13-9.rhaos4.19.git2100f27.el9.x86 |
| Red Hat | cri-tools-0:1.32.0-6.el9.ppc64le as a component of Red Hat OpenShift Container Platform 4.19 | 1.32.0-6.el9.ppc64le, 1.32.0-6.el9.ppc64le |
| Red Hat | openshift-clients-0:4.19.0-202608111604.p2.gb2a93a6.assembly.stream.el9.src as a component of Red Hat OpenShift Container Platform 4.19 | 4.19.0-202608111604.p2.gb2a93a6.assembly.stream.el9.src, 4.19.0-202608111604.p2.gb2a93a6.assembly.stream.el9.src |
| Red Hat | cri-o-debuginfo-0:1.32.13-9.rhaos4.19.git2100f27.el9.aarch64 as a component of Red Hat OpenShift Container Platform 4.19 | 1.32.13-9.rhaos4.19.git2100f27.el9.aarch64, 1.32.13-9.rhaos4.19.git2100f27.el9.aarch64 |
| Red Hat | openshift-hyperkube-0:4.19.0-202608111604.p2.g63adf01.assembly.stream.el9.x86_64 as a component of Red Hat OpenShift Container Platform 4.19 | 4.19.0-202608111604.p2.g63adf01.assembly.stream.el9.x86, 4.19.0-202608111604.p2.g63adf01.assembly.stream.el9.x86 |
| Red Hat | skopeo-debuginfo-2:1.18.1-7.rhaos4.19.el9.x86_64 as a component of Red Hat OpenShift Container Platform 4.19 | 1.18.1-7.rhaos4.19.el9.x86, 1.18.1-7.rhaos4.19.el9.x86 |
| Red Hat | openshift-kube-scheduler-0:4.19.0-202608111604.p2.g63adf01.assembly.stream.el9.aarch64 as a component of Red Hat OpenShift Container Platform 4.19 | 4.19.0-202608111604.p2.g63adf01.assembly.stream.el9.aarch64, 4.19.0-202608111604.p2.g63adf01.assembly.stream.el9.aarch64 |
| Red Hat | skopeo-debugsource-2:1.18.1-7.rhaos4.19.el9.s390x as a component of Red Hat OpenShift Container Platform 4.19 | 1.18.1-7.rhaos4.19.el9.s390x, 1.18.1-7.rhaos4.19.el9.s390x |
| Red Hat | ose-aws-ecr-image-credential-provider-0:4.19.0-202608111604.p2.g425c1c5.assembly.stream.el9.s390x as a component of Red Hat OpenShift Container Platform 4.19 | 4.19.0-202608111604.p2.g425c1c5.assembly.stream.el9.s390x |
| Red Hat | skopeo-debugsource-2:1.18.1-7.rhaos4.19.el9.ppc64le as a component of Red Hat OpenShift Container Platform 4.19 | 1.18.1-7.rhaos4.19.el9.ppc64le |
| Red Hat | cri-o-0:1.32.13-9.rhaos4.19.git2100f27.el9.ppc64le as a component of Red Hat OpenShift Container Platform 4.19 | 1.32.13-9.rhaos4.19.git2100f27.el9.ppc64le, 1.32.13-9.rhaos4.19.git2100f27.el9.ppc64le |
| Red Hat | cri-tools-0:1.32.0-6.el9.x86_64 as a component of Red Hat OpenShift Container Platform 4.19 | 1.32.0-6.el9.x86, 1.32.0-6.el9.x86 |
…and 63 more
Timeline
- Aug 19, 2026 CVE Published
- Aug 24, 2026 CVE Updated
- Aug 24, 2026 Distribution Patch
- Aug 24, 2026 Distribution Patch
- Aug 24, 2026 Security Advisory
- Aug 24, 2026 Security Advisory
- Aug 24, 2026 Security Advisory
- Aug 24, 2026 Security Advisory
References
- https://access.redhat.com/errata/RHSA-2026:54552 advisory
- https://access.redhat.com/security/updates/classification/#important advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2467809 issue
- https://bugzilla.redhat.com/show_bug.cgi?id=2467820 issue
- https://bugzilla.redhat.com/show_bug.cgi?id=2467822 issue
- https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_54552.json advisory
- https://access.redhat.com/security/cve/CVE-2026-33811 advisory
- https://www.cve.org/CVERecord?id=CVE-2026-33811 advisory
- https://nvd.nist.gov/vuln/detail/CVE-2026-33811 advisory
- https://go.dev/cl/767860 advisory
- https://go.dev/issue/78803 advisory
- https://groups.google.com/g/golang-announce/c/qcCIEXso47M advisory
- https://pkg.go.dev/vuln/GO-2026-4981 advisory
- https://access.redhat.com/security/cve/CVE-2026-39820 advisory
- https://www.cve.org/CVERecord?id=CVE-2026-39820 advisory
- https://nvd.nist.gov/vuln/detail/CVE-2026-39820 advisory
- https://go.dev/cl/759940 advisory
- https://go.dev/issue/78566 advisory
- https://pkg.go.dev/vuln/GO-2026-4986 advisory
- https://access.redhat.com/security/cve/CVE-2026-42499 advisory
…and 5 more