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CVE-2026-11605 The issue is a resource exhaustion vulnerability associated with DNSSEC validation

Description

The issue is a resource exhaustion vulnerability associated with DNSSEC validation. BIND always validates all RRSIG records in an answer, even if they are not strictly needed. A query to an authoritative server/zone which returns many valid but superfluous RRSIG records causes the validator to waste disproportionate CPU time. This issue affects BIND 9 versions 9.20.0 through 9.20.24, 9.21.0 through 9.21.23, and 9.20.9-S1 through 9.20.24-S1.

Produits et versions touchés

Produit Versions touchées Corrigé en
BIND 9 9.21 9.21.0 → 9.21.23 Pas de correctif indiqué
BIND 9 9.20 9.20.0 → 9.20.24 Pas de correctif indiqué

Références

Chronologie

  1. Publiée
  2. Dernière modification

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