RHSA-2026:24369 Red Hat Security Advisory: unbound security update

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CVE-2026-42923

NLnet Labs Unbound up to and including version 1.25.0 has a vulnerability in the DNSSEC validator where the code path to consult the negative cache for DS records does not take into account the limit on NSEC3 hash calculations introduced in 1.19.1. This leads to degradation of service during the...

CLSA-2026-1769424072 unbound: Fix of CVE-2024-8508

CVE-2024-8508: limit number of name compression calculations per packet to prevent CPU locking and potential denial of service...

CLSA-2026-1768395381 unbound: Fix of CVE-2024-1488

Fix CVE-2024-1488: improper access control for remote control interface Previous defaults allowed any process to change unbound settings...

CLSA-2025-1765901537 unbound: Fix of CVE-2024-8508

CVE-2024-8508: limit number of name compression calculations per packet to prevent denial of service attacks...

CLSA-2025-1736503760 unbound: Fix of CVE-2024-8508

CVE-2024-8508: Limit number of name compression calculations per packet to prevent CPU lock and potential denial of service...

AZL-47771 CVE-2024-43167 affecting package unbound for versions less than 1.19.1-4

DISPUTE NOTE: this issue does not pose a security risk as it according to analysis by the original software developer, NLnet Labs falls within the expected functionality and security controls of the application. Red Hat has made a claim that there is a security risk within Red Hat products. NLnet...

UBUNTU-CVE-2022-30699

NLnet Labs Unbound, up to and including version 1.16.1, is vulnerable to a novel type of the "ghost domain names" attack. The vulnerability works by targeting an Unbound instance. Unbound is queried for a rogue domain name when the cached delegation information is about to expire. The rogue...