Operations

Ubuntu 22.04 — ca-certificates — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 22.04

Ubuntu 22.04 — ca-certificates — multiple vulnerabilities (3 CVEs) — patch and remediation guide

  • June 12, 2022
  • Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 12 June 2022 Affected versions: Ubuntu 22.04 (jammy) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-7034-1 Related CVEs: https://launchpad.net/bugs/2081875 https://launchpad.net/bugs/2020089 https://launchpad.net/bugs/1998785 Upstream summary: The ca-certificates package contained outdated CA certificates. This update refreshes the included certificates to those contained in the 2.64 version of the […]

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How to Configure Telegraf Metrics Agent on Debian 11 — step-by-step Debian 11 tutorial on Progressive Robot

How to Configure Telegraf Metrics Agent on Debian 11

  • June 12, 2022
  • Linux
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Introduction Deploying configure telegraf metrics agent on debian 11 on a Debian 11 Bullseye machine is straightforward thanks to Debian’s policy-compliant packaging. Unlike rpm-based distributions, Debian stores configuration helpers in /etc/default/, uses update-rc.d for older init scripts, and provides dpkg-reconfigure for interactive package configuration. This tutorial stays on the systemd path throughout. Prerequisites Before you […]

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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-2022-9601)

  • June 12, 2022
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 12 June 2022 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2022-9601 Related CVEs: CVE-2022-21505 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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Common Problems 114458

NetworkManager Connection Missing After Reboot

🟡 Medium   ⏱ 5–30 min  Last verified: 12 June 2022 📖 ~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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Common Problems 114985

NetworkManager Connection Drops After Restart

🟡 Medium   ⏱ 5–30 min  Last verified: 12 June 2022 📖 ~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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Oracle Linux 8 — Unbreakable Enterprise kernel-container — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — Unbreakable Enterprise kernel-container — vulnerability — patch and remediation guide (ELSA-2022-9534)

  • June 12, 2022
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 12 June 2022 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2022-9534 Related CVEs: CVE-2022-1263 CVE-2022-28390 CVE-2022-1015 CVE-2022-28388 CVE-2021-4095 CVE-2022-29582 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 8 — squid:4 — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — squid:4 — vulnerability — patch and remediation guide (ELSA-2022-5526)

  • June 12, 2022
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 12 June 2022 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2022-5526 Related CVEs: CVE-2021-46784 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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Gentoo Linux — x11-libs/pixman — vulnerability — patch and remediation guide — diagnosis and fix on Gentoo Linux

Gentoo Linux — x11-libs/pixman — vulnerability — patch and remediation guide

  • June 12, 2022
  • Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Gentoo Linux 📖 ~4 min read  •  Source: Gentoo GLSA GLSA-202407-04 Related CVEs: CVE-2022-44638 Upstream summary: A vulnerability has been discovered in Pixman. Please review the CVE identifiers referenced below for details. Table of contents Symptom & Impact Environment & Reproduction Root […]

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