Package Management

Oracle Linux 8 — Unbreakable Enterprise kernel — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — Unbreakable Enterprise kernel — vulnerability — patch and remediation guide (ELSA-2022-10022)

🟠 High   ⏱ 15–60 min  Last verified: 23 December 2022 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2022-10022 Related CVEs: CVE-2022-1184 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 — bcel — vulnerability — patch and remediation guide — diagnosis and fix on AlmaLinux 9

AlmaLinux 9 — bcel — vulnerability — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 9 📖 ~4 min read  •  Source: AlmaLinux ALSA ALSA-2023:0005 Related CVEs: CVE-2022-42920 Upstream summary: The Byte Code Engineering Library (Apache Commons BCEL) is intended to give users a convenient way to analyze, create, and manipulate (binary) Java class files (those […]

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Oracle Linux 9 — grub2 — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 9

Oracle Linux 9 — grub2 — vulnerability — patch and remediation guide (ELSA-2022-5099)

🟠 High   ⏱ 15–60 min  Last verified: 23 December 2022 Affected versions: Oracle Linux 9 📖 ~4 min read  •  Source: ELSA advisory ELSA-2022-5099 Related CVEs: CVE-2021-3695 CVE-2022-28737 CVE-2022-28734 CVE-2022-28736 CVE-2021-3696 CVE-2021-3697 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]

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Oracle Linux 9 — Unbreakable Enterprise kernel — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 9

Oracle Linux 9 — Unbreakable Enterprise kernel — vulnerability — patch and remediation guide (ELSA-2022-10022)

🟠 High   ⏱ 15–60 min  Last verified: 23 December 2022 Affected versions: Oracle Linux 9 📖 ~4 min read  •  Source: ELSA advisory ELSA-2022-10022 Related CVEs: CVE-2022-1184 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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How to Configure Network Interface Settings with nmcli on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Configure Network Interface Settings with nmcli on RHEL 8

NetworkManager is the default network management stack on RHEL 8, and nmcli is its fully-featured command-line interface. Using nmcli, administrators can create, modify, activate, and delete network connections entirely from the terminal — no GUI or .ifcfg file editing required. This tutorial covers inspecting current network state, configuring a static IP address, managing connections, and […]

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Debian 11 — bsdgames — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — bsdgames — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 22 December 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2006-1539 CVE-2006-1744 Upstream summary: Multiple buffer overflows in the checkscores function in scores.c in tetris-bsd in bsd-games before 2.17-r1 in Gentoo Linux might allow local users with games […]

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Debian 11 — dstat — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — dstat — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 22 December 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2009-3894 Upstream summary: Multiple untrusted search path vulnerabilities in dstat before 0.7.0 allow local users to gain privileges via a Trojan horse Python module in (1) the current […]

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Common Problems 117926

Ubuntu 18.04 LTS – apt lock contention from unattended-upgrades blocks installs – Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 22 December 2022 Affected versions: Ubuntu 18.04 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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Debian 11 — mgt — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — mgt — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 22 December 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2008-4972 Upstream summary: mailgo in mgt 2.31 allows local users to overwrite arbitrary files via a symlink attack on a /tmp/mailgo##### temporary file. Table of contents Symptom & […]

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Debian 11 — ssldump — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — ssldump — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 22 December 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2002-2207 CVE-2002-2227 Upstream summary: Buffer overflow in ssldump 0.9b2 and earlier, when running in decryption mode, allows remote attackers to execute arbitrary code via a long RSA PreMasterSecret. […]

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