Linux

Common Problems 124983

Oracle Linux 8 – Common Problem 002 – Diagnosis and Fix

🔴 Critical   ⏱ 5–30 min  Last verified: 8 February 2021 Affected versions: Oracle Linux 8 📖 ~3 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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Common Problems 118506

Ubuntu 16.04 LTS – ext4 remounts filesystem read-only

🔴 Critical   ⏱ 5–30 min  Last verified: 8 February 2021 Affected versions: Ubuntu 16.04 LTS Ubuntu 16.04 Ubuntu 16.04.7 📖 ~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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Common Problems 117421

Ubuntu 20.04 LTS High CPU From journald Log Storm

🟡 Medium   ⏱ 5–30 min  Last verified: 8 February 2021 Affected versions: 20.04 LTS 📖 ~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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Gentoo Linux — kde-misc/kdeconnect — vulnerability — patch and remediation guide — diagnosis and fix on Gentoo Linux

Gentoo Linux — kde-misc/kdeconnect — 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-202101-16 Related CVEs: CVE-2020-26164 Upstream summary: Multiple issues causing excessive resource consumption were found in KDE Connect. Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step […]

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

Oracle Linux 8 — fetchmail — vulnerability — patch and remediation guide (ELSA-2022-1964)

🟡 Medium   ⏱ 10–30 min  Last verified: 8 February 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2022-1964 Related CVEs: CVE-2021-36386 CVE-2021-39272 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & […]

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openSUSE Tumbleweed — live555 — multiple vulnerabilities (12 CVEs) — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — live555 — multiple vulnerabilities (12 CVEs) — patch and remediation guide

🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE advisory openSUSE-SU-2021:0915-1 (see also SUSE bugzilla) Related CVEs: CVE-2019-15232 CVE-2018-4013 CVE-2019-6256 CVE-2019-7314 CVE-2019-9215 CVE-2021-28899 CVE-2021-38380 CVE-2021-38381  +4 more Upstream summary: Live555 before 2019.08.16 has a Use-After-Free because GenericMediaServer::createNewClientSessionWithId can generate the same client […]

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How to Configure DKIM, SPF and DMARC on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Configure DKIM, SPF and DMARC on RHEL 7

How to Configure DKIM, SPF and DMARC on RHEL 7 Email authentication standards — SPF, DKIM, and DMARC — are essential for any mail server that sends outbound email. Without them, your messages are likely to be rejected or placed in spam folders by major providers such as Gmail, Microsoft 365, and Yahoo. SPF (Sender […]

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Debian 10 — nginx — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Debian 10

Debian 10 — nginx — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 8 February 2021 Affected versions: Debian 10 (buster) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2019-9511 CVE-2020-11724 CVE-2021-23017 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification […]

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Как установить Java с помощью Apt-Get в Ubuntu 16.04 — step-by-step Linux tutorial on Progressive Robot

Как установить Java с помощью Apt-Get в Ubuntu 16.04

Java и JVM (Виртуальная машина Java) широко используются в самом разном программном обеспечении. Эта статья описывает процесс установки и управления различными версиями Java с помощью утилиты apt-get. Для того, чтобы следовать инструкциям в этой статье,…

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Debian 10 — tomcat9 — multiple vulnerabilities (6 CVEs) — patch and remediation guide — diagnosis and fix on Debian 10

Debian 10 — tomcat9 — multiple vulnerabilities (6 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 8 February 2021 Affected versions: Debian 10 (buster) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2019-10072 CVE-2020-9484 CVE-2020-13943 CVE-2021-25122 CVE-2021-30640 CVE-2021-41079 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]

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