Go net package: Denial of Service via long CNAME response in LookupCNAME
Summary
Go net package: Denial of Service via long CNAME response in LookupCNAME. Red Hat rates this important (CVSS 7.5). Weakness: CWE-1341. Affected package(s): golang-github-openprinting-ipp-usb, opentelemetry-collector, golang1, openshift-service-mesh/istio-proxyv2-rhel9:1782310747, openshift-service-mesh/istio-proxyv2-rhel9:1782303211, rhdh/rhdh-rhel9-operator:1782767215. Resolved in Red Hat advisory RHSA-2026:23262 — update the affected packages (`sudo dnf update`).
- golang-github-openprinting-ipp-usb-0:0.9.27-7.el10_2.2
- opentelemetry-collector-0:0.152.1-1.el9_8
- golang1-25-main-1.25.11-2.hum1
- openshift-service-mesh/istio-proxyv2-rhel9:1782310747
- openshift-service-mesh/istio-proxyv2-rhel9:1782303211
- rhdh/rhdh-rhel9-operator:1782767215
- golang1-26-main-1.26.4-2.hum1
- openshift-service-mesh/istio-cni-rhel9:1782222217
- openshift-service-mesh/istio-pilot-rhel9:1782223341
- openshift-service-mesh/istio-pilot-rhel9:1782223138
- openshift-service-mesh/istio-pilot-rhel9:1782222366
- openshift-service-mesh/istio-pilot-rhel9:1782224487
Official advisory · high-confidence parse· fetched 2 hours ago·verify at source
- RHSA-2026:23262
Official advisory · high-confidence parse· fetched 2 hours ago·verify at source
Mitigation checklist
- Update the affected package(s) to the fixed version shipped in RHSA-2026:23262 (`sudo dnf update` / `yum update`).
Official advisory · high-confidence parse· fetched 2 hours ago·verify at source
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