Medium5.3Red Hat Linux

Medium [CVE-2025-68151] github.com/coredns/coredns/core/dnsserver: CoreDNS DoS via unbounded connections and oversized messages

This medium-severity Red Hat Linux advisory covers CVE-2025-68151 affecting rhacm2/lighthouse-coredns-rhel9:1774086225, rhacm2/lighthouse-coredns-rhel9:1780204249, Red Hat Enterprise Linux.

CVE-2025-68151 Published Jan 8, 2026

CVE-2025-68151

Affected products & platforms

Red Hat LinuxUnclassified

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Summary

github.com/coredns/coredns/core/dnsserver: CoreDNS DoS via unbounded connections and oversized messages. Red Hat rates this moderate (CVSS 5.3).

Weakness: CWE-770. Affected package(s): rhacm2/lighthouse-coredns-rhel9:1774086225, rhacm2/lighthouse-coredns-rhel9:1780204249.

Resolved in Red Hat advisory RHSA-2026:8151 — update the affected packages (`sudo dnf update`).

Affected products named by the advisory: Red Hat Enterprise Linux.

Affected versions

rhacm2/lighthouse-coredns-rhel9:1774086225
rhacm2/lighthouse-coredns-rhel9:1780204249

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

Fixed versions

RHSA-2026:8151

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

Mitigation checklist

Recommended fix / mitigation

Update the affected package(s) to the fixed version shipped in RHSA-2026:8151 (`sudo dnf update` / `yum update`).

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

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