Advisory severityHigh7.5Red Hat Linux

High [CVE-2026-69186] Denial of Service via unvalidated DNS header record counts

This high-severity Red Hat Linux advisory covers CVE-2026-69186; related products: Red Hat Hardened Images, Red Hat OpenShift Container Platform 4.

Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.

CVE-2026-69186 Source published Sep 18, 2026Source updated Sep 18, 2026

VulniPulse record published Sep 23, 2026Record updated Sep 28, 2026

CVE-2026-69186

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Summary

Denial of Service via unvalidated DNS header record counts. Red Hat rates this important (CVSS 7.5).

Weakness: CWE-1284. Red Hat lists fixing advisory RHSA-2026:40574 with package c-ares-main-1.34.8-2.hum1.

Affected products named by the advisory: Red Hat Hardened Images; Red Hat OpenShift Container Platform 4.

Affected versions

< 1.34.7

Official advisory · high-confidence parse· fetched 8 days ago·verify at source

Fixed versions

c-ares-main-1.34.8-2.hum1
RHSA-2026:40574

Official advisory · high-confidence parse· fetched 8 days ago·verify at source

Mitigation

Upgrade to a fixed release: c-ares-main-1.34.8-2.hum1, RHSA-2026:40574. That is the remediation for this advisory.

The vendor advisory may list additional interim mitigations or workarounds not captured here — review it before change work.

Official advisory · high-confidence parse· fetched 8 days ago·verify at source

Discussion(0)

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