High7.5Red Hat Linux

High [CVE-2026-1519] Denial of Service via maliciously crafted DNSSEC-validated zone

This high-severity Red Hat Linux advisory covers CVE-2026-1519 affecting BIND 9, Red Hat Enterprise Linux 10.0 Extended Update Support, Red Hat Enterprise Linux 6 Extended Lifecycle Support - EXTENSION.

CVE-2026-1519 Published Mar 25, 2026

CVE-2026-1519

Affected products & platforms

Red Hat LinuxUnclassified

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Summary

Denial of Service via maliciously crafted DNSSEC-validated zone. Red Hat rates this important (CVSS 7.5).

Weakness: CWE-770. Affected package(s): bind, bind9.16, bind9.18, rhcos, bind-main.

Resolved in Red Hat advisory RHSA-2026:29863 — update the affected packages (`sudo dnf update`).

Affected products named by the advisory: BIND 9; Red Hat Enterprise Linux 10.0 Extended Update Support; Red Hat Enterprise Linux 6 Extended Lifecycle Support - EXTENSION; Red Hat Enterprise Linux 7 Extended Lifecycle Support; and 17 more.

Affected versions

bind-32:9.11.36-16.el8_10.7
bind9.16-32:9.16.23-0.7.el8_6.10
bind-32:9.11.36-8.el8_8.9
bind-32:9.16.23-18.el9_4.11
bind-32:9.18.33-4.el10_0.3
bind-32:9.16.23-34.el9_7.2
bind9.18-32:9.18.29-4.el9_6.3
bind-32:9.18.33-10.el10_1.3
bind9.16-32:9.16.23-0.14.el8_8.8
bind9.18-32:9.18.29-5.el9_7.4
bind-32:9.16.23-11.el9_2.10
bind-32:9.11.36-3.el8_6.12

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

Fixed versions

RHSA-2026:29863

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-2026:29863 (`sudo dnf update` / `yum update`).

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

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