Advisory severityHigh7.5Red Hat Linux

High [CVE-2026-76163] Denial of Service via TKEY query with specific configuration

This high-severity Red Hat Linux advisory covers CVE-2026-76163; related products: Red Hat Hardened Images.

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

CVE-2026-76163 Source published Sep 16, 2026Source updated Sep 16, 2026

VulniPulse record published Sep 17, 2026Record updated Sep 24, 2026

CVE-2026-76163

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Summary

Denial of Service via TKEY query with specific configuration. Red Hat rates this important (CVSS 7.5).

Weakness: CWE-617. Red Hat lists fixing advisory RHSA-2026:68279 with package bind-main-9.20.29-0.1.hum1.

Affected product named by the advisory: Red Hat Hardened Images.

Affected versions

9.20.0
9.20.27
9.21.0
9.21.25
9.20.9

Official advisory · high-confidence parse· fetched 13 days ago·verify at source

Fixed versions

bind-main-9.20.29-0.1.hum1
RHSA-2026:68279

Official advisory · high-confidence parse· fetched 13 days ago·verify at source

Mitigation checklist

Recommended fix / mitigation

To mitigate this issue, ensure that the BIND configuration file (`named.conf`) includes a global `options` block. If no such block exists, adding an empty `options {}` block will prevent the vulnerability. After modifying `named.conf`, the `named` service must be restarted for the changes to take effect. This may temporarily interrupt DNS resolution.

Official advisory · high-confidence parse· fetched 13 days ago·verify at source

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