Fedora 43 bind9-next Critical DNS Fix CVE-2026-1519 DoS 2026-a6efefa854

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Fedora 43 bind9-next Critical DNS Fix CVE-2026-1519 DoS 2026-a6efefa854

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Update to 9.21.20 (rhbz#2440560) Security Fixes: Fix unbounded NSEC3 iterations when validating referrals to unsigned delegations. (CVE-2026-1519) Fix memory leaks in code preparing DNSSEC proofs of non-existence.

Source: https://linuxsecurity.com/advisories/fe ... a6efefa854
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