Linux

Common Problems 114936

RHEL 8 journalctl Missing Historical Logs After Reboot

🟡 Medium   ⏱ 5–30 min  Last verified: 16 March 2023 📖 ~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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Alpine Linux edge — syslog-ng — vulnerability — patch and remediation guide — diagnosis and fix on Alpine Linux edge

Alpine Linux edge — syslog-ng — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Alpine Linux edge / fixed in 3.38.1-r0 📖 ~4 min read  •  Source: Alpine secdb entry — syslog-ng 3.38.1-r0 Related CVEs: CVE-2022-38725 Upstream summary: Alpine main repository for vedge ships syslog-ng 3.38.1-r0 which addresses CVE-2022-38725. Table of contents Symptom & Impact Environment […]

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How to Install Jenkins on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Install Jenkins on Debian 9

Introduction Debian 9 Stretch is built around the ethos of stability and free software. Setting up install jenkins on debian 9 on Stretch leverages the same proven Debian packaging system that powers millions of servers worldwide, while benefiting from the latest upstream releases included in the Stretch freeze. Follow each step carefully and the resulting […]

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Ubuntu 14.04 — audiofile — multiple vulnerabilities (18 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 14.04

Ubuntu 14.04 — audiofile — multiple vulnerabilities (18 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 16 March 2023 Affected versions: Ubuntu 14.04 (trusty) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-6558-1 Related CVEs: CVE-2018-13440 CVE-2018-17095 CVE-2019-13147 CVE-2022-24599 CVE-2017-6827 CVE-2017-6828 CVE-2017-6829 CVE-2017-6830  +10 more Upstream summary: It was discovered that audiofile could be made to dereference invalid memory. If a user […]

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Gentoo Linux — x11-terms/kitty — vulnerability — patch and remediation guide — diagnosis and fix on Gentoo Linux

Gentoo Linux — x11-terms/kitty — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Gentoo Linux 📖 ~4 min read  •  Source: Gentoo GLSA GLSA-202209-22 Related CVEs: CVE-2022-41322 Upstream summary: Carter Sande discovered that maliciously constructed control sequences can cause Kitty to display a notification that, when clicked, can cause Kitty to execute arbitrary commands. Table […]

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Oracle Linux 8 — libreoffice — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — libreoffice — vulnerability — patch and remediation guide (ELSA-2023-6933)

🟡 Medium   ⏱ 10–30 min  Last verified: 16 March 2023 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2023-6933 Related CVEs: CVE-2023-2255 CVE-2023-0950 CVE-2022-38745 CVE-2023-1183 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches […]

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Oracle Linux 9 — linux-firmware — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 9

Oracle Linux 9 — linux-firmware — vulnerability — patch and remediation guide

🔴 Critical   ⏱ 15–90 min  Last verified: 16 March 2023 Affected versions: Oracle Linux 9 📖 ~4 min read  •  Source: ELSA advisory ELSA-2023-12692 Related CVEs: CVE-2023-20593 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance […]

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Oracle Linux 9 — swtpm — security and stability fixes — required update — diagnosis and fix on Oracle Linux 9

Oracle Linux 9 — swtpm — security and stability fixes — required update (ELSA-2022-8100)

🟢 Low   ⏱ 5–15 min  Last verified: 15 March 2023 Affected versions: Oracle Linux 9 📖 ~4 min read  •  Source: ELSA advisory ELSA-2022-8100 Related CVEs: CVE-2022-23645 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance […]

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AlmaLinux 9 — kernel-rt — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on AlmaLinux 9

AlmaLinux 9 — kernel-rt — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 9 📖 ~4 min read  •  Source: AlmaLinux ALSA ALSA-2023:5091 Related CVEs: CVE-2023-1637 CVE-2023-20593 CVE-2023-21102 CVE-2023-31248 CVE-2023-3390 CVE-2023-35001 CVE-2023-3610 CVE-2023-3776  +12 more Upstream summary: The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high […]

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Common Problems 117558

Ubuntu 20.04 LTS – system clock drift causes NTP unsynchronized status

🟡 Medium   ⏱ 5–30 min  Last verified: 15 March 2023 Affected versions: Ubuntu 20.04 LTS Ubuntu 20.04 Ubuntu 20.04.6 📖 ~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 […]

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