Linux

Common Problems 124118

Oracle Linux 10 – nftables and firewalld Policy Conflict Breaks Traffic – Unified Rule Strategy

🟠 High   ⏱ 5–30 min  Last verified: 20 October 2025 Affected versions: Oracle Linux 10 📖 ~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 […]

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Amazon Linux 2023 — kernel-livepatch-6.1.130-139.222 — multiple vulnerabilities (5 CVEs) — patch and remediation guide — diagnosis and fix on Amazon Linux 2023

Amazon Linux 2023 — kernel-livepatch-6.1.130-139.222 — multiple vulnerabilities (5 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Amazon Linux 2023 📖 ~4 min read  •  Source: Amazon Linux advisory ALAS2023LIVEPATCH-2025-051 Related CVEs: CVE-2025-21919 CVE-2025-21920 CVE-2025-21927 CVE-2025-21928 CVE-2025-37785 Upstream summary: In the Linux kernel, the following vulnerability has been resolved: sched/fair: Fix potential memory corruption in child_cfs_rq_on_list (CVE-2025-21919) In the […]

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Common Problems 124070

Oracle Linux 10 systemd Service Hits Start-Limit and Stays Failed

🟠 High   ⏱ 5–30 min  Last verified: 20 October 2025 Affected versions: Oracle Linux 10 📖 ~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 […]

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Debian 13 — libxvmc — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — libxvmc — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 20 October 2025 Affected versions: Debian 13 (trixie) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2013-1990 CVE-2013-1999 CVE-2016-7953 Upstream summary: Multiple integer overflows in X.org libXvMC 1.0.7 and earlier allow X servers to trigger allocation of insufficient memory and a buffer overflow via […]

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AlmaLinux 8 — perl-Storable — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — perl-Storable — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read  •  Source: AlmaLinux ALSA ALSA-2026:8096 Related CVEs: CVE-2025-40909 CVE-2023-47038 Upstream summary: Perl is a high-level programming language that is commonly used for system administration utilities and web programming. Security Fix(es): * perl: Perl threads have a […]

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Debian 13 — jython — multiple vulnerabilities (11 CVEs) — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — jython — multiple vulnerabilities (11 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 20 October 2025 Affected versions: Debian 13 (trixie) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2013-2027 CVE-2016-4000 CVE-2017-17522 CVE-2019-16935 CVE-2025-12084 CVE-2025-15366 CVE-2025-15367 CVE-2025-6069  +3 more Upstream summary: Jython 2.2.1 uses the current umask to set the privileges of the class cache files, which […]

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Common Problems 119550

Debian 13 High CPU from Runaway systemd Service

🟡 Medium   ⏱ 5–30 min  Last verified: 20 October 2025 📖 ~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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Debian 13 — webpy — vulnerability — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — webpy — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 20 October 2025 Affected versions: Debian 13 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2025-3818 Upstream summary: A vulnerability, which was classified as critical, was found in webpy web.py 0.70. Affected is the function PostgresDB._process_insert_query of the file web/db.py. The manipulation of the […]

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Debian 12 — gpsd — multiple vulnerabilities (5 CVEs) — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — gpsd — multiple vulnerabilities (5 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 20 October 2025 Affected versions: Debian 12 (bookworm) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2004-1388 CVE-2013-2038 CVE-2018-17937 CVE-2025-67268 CVE-2025-67269 Upstream summary: Format string vulnerability in the gpsd_report function for BerliOS GPD daemon (gpsd, formerly pygps) 1.9.0 through 2.7 allows remote attackers to […]

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How to Configure Postfix Mail Server on Debian 13 — step-by-step Debian 13 tutorial on Progressive Robot

How to Configure Postfix Mail Server on Debian 13

Introduction Debian 13 Trixie is built around the ethos of stability and free software. Setting up configure postfix mail server on Trixie leverages the same proven Debian packaging system that powers millions of servers worldwide, while benefiting from the latest upstream releases included in the Trixie freeze. Follow each step carefully and the resulting configuration […]

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