DNS

Common Problems 118034

Ubuntu 18.04 failed to fetch updates from repositories

🟡 Medium   ⏱ 5–30 min  Last verified: 20 May 2026 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors & Cross-Refs References & Further […]

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openSUSE Leap 15.6 — dnsmasq — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on openSUSE Leap 15.6

openSUSE Leap 15.6 — dnsmasq — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: openSUSE Leap 15.6 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2026:1826-1 (see also SUSE bugzilla) Related CVEs: CVE-2026-2291 CVE-2023-50387 CVE-2023-50868 CVE-2023-28450 Upstream summary: dnsmasqs extract_name() function can be abused to cause a heap buffer overflow, allowing an attacker to inject false […]

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openSUSE Leap 15.6 — bind — multiple vulnerabilities (10 CVEs) — patch and remediation guide — diagnosis and fix on openSUSE Leap 15.6

openSUSE Leap 15.6 — bind — multiple vulnerabilities (10 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: openSUSE Leap 15.6 📖 ~4 min read  •  Source: SUSE advisory RHSA-2026:11371 (see also SUSE bugzilla) Related CVEs: CVE-2026-1519 CVE-2025-40778 CVE-2025-40780 CVE-2025-8677 CVE-2024-11187 CVE-2024-12705 CVE-2024-0760 CVE-2024-1737  +2 more Upstream summary: If a BIND resolver is performing DNSSEC validation and encounters a maliciously […]

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Amazon Linux 2 — python-dns — vulnerability — patch and remediation guide — diagnosis and fix on Amazon Linux 2

Amazon Linux 2 — python-dns — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Amazon Linux 2 📖 ~4 min read  •  Source: Amazon Linux advisory ALAS2-2024-2647 Related CVEs: CVE-2023-29483 Upstream summary: eventlet before 0.35.2, as used in dnspython before 2.6.0, allows remote attackers to interfere with DNS name resolution by quickly sending an invalid packet […]

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Gentoo Linux — net-dns/unbound — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Gentoo Linux

Gentoo Linux — net-dns/unbound — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Gentoo Linux 📖 ~4 min read  •  Source: Gentoo GLSA GLSA-202212-02 Related CVEs: CVE-2022-3204 CVE-2022-30698 CVE-2022-30699 Upstream summary: Multiple vulnerabilities have been discovered in Unbound. Please review the CVE identifiers referenced below for details. Table of contents Symptom & Impact Environment & […]

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Gentoo Linux — dev-java/jackson-databind — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Gentoo Linux

Gentoo Linux — dev-java/jackson-databind — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Gentoo Linux 📖 ~4 min read  •  Source: Gentoo GLSA GLSA-202210-21 Related CVEs: CVE-2022-42003 CVE-2022-42004 Upstream summary: Multiple vulnerabilities have been discovered in FasterXML jackson-databind. Please review the CVE identifiers referenced below for details. Table of contents Symptom & Impact Environment & […]

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Gentoo Linux — net-dns/bind-tools — multiple vulnerabilities (9 CVEs) — patch and remediation guide — diagnosis and fix on Gentoo Linux

Gentoo Linux — net-dns/bind-tools — multiple vulnerabilities (9 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Gentoo Linux 📖 ~4 min read  •  Source: Gentoo GLSA GLSA-202210-25 Related CVEs: CVE-2021-25219 CVE-2021-25220 CVE-2022-0396 CVE-2022-2795 CVE-2022-2881 CVE-2022-2906 CVE-2022-3080 CVE-2022-38177  +1 more Upstream summary: Multiple vulnerabilities have been discovered in ISC BIND. Please review the CVE identifiers referenced below for details. […]

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NetBSD 9.4 — ldns — multiple vulnerabilities (7 CVEs) — patch and remediation guide — diagnosis and fix on NetBSD 9.4

NetBSD 9.4 — ldns — multiple vulnerabilities (7 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: NetBSD 9.4 📖 ~4 min read  •  Source: pkgsrc audit-packages entry Related CVEs: CVE-2009-1086 CVE-2011-3581 CVE-2017-1000231 CVE-2017-1000232 CVE-2014-3209 CVE-2020-19860 CVE-2020-19861 Upstream summary: pkgsrc audit-packages flagged ldns<1.5.1 for vulnerability class 'arbitrary-code-execution'. Reference: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-1086 Table of contents Symptom & Impact Environment & Reproduction Root […]

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openSUSE Leap 15.6 — coredns — multiple vulnerabilities (9 CVEs) — patch and remediation guide — diagnosis and fix on openSUSE Leap 15.6

openSUSE Leap 15.6 — coredns — multiple vulnerabilities (9 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: openSUSE Leap 15.6 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2026:1042-1 (see also SUSE bugzilla) Related CVEs: CVE-2026-26017 CVE-2026-26018 CVE-2025-68156 CVE-2022-27191 CVE-2023-28452 CVE-2023-30464 CVE-2025-58063 CVE-2022-28948  +1 more Upstream summary: CoreDNS is a DNS server that chains plugins. Prior to version 1.14.2, […]

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Rocky Linux 10 — bind — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on Rocky Linux 10

Rocky Linux 10 — bind — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Rocky Linux 10 📖 ~4 min read  •  Source: Rocky Linux RXSA RLSA-2026:8312 Related CVEs: CVE-2026-1519 CVE-2025-40778 CVE-2025-40780 CVE-2025-8677 Upstream summary: The Berkeley Internet Name Domain (BIND) is an implementation of the Domain Name System (DNS) protocols. BIND includes a DNS server […]

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