Linux

Ubuntu 22.04 — mutt — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 22.04

Ubuntu 22.04 — mutt — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 3 April 2023 Affected versions: Ubuntu 22.04 (jammy) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-6374-1 Related CVEs: CVE-2023-4874 CVE-2023-4875 CVE-2021-32055 CVE-2022-1328 Upstream summary: It was discovered that Mutt incorrectly handled certain email header contents. If a user were tricked into opening a specially crafted […]

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How to Monitor MySQL with Percona Monitoring and Management on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Monitor MySQL with Percona Monitoring and Management on RHEL 8

Percona Monitoring and Management (PMM) is an open-source platform that provides deep visibility into MySQL, MariaDB, PostgreSQL, and MongoDB performance — including query analytics, slow-query identification, and time-series dashboards — without requiring a commercial licence. Running PMM Server as a Docker container keeps the server component isolated and easy to upgrade, while the lightweight PMM […]

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Oracle Linux 9 — Kdump Might Fail on Some AMD Hardware — diagnosis and fix on Oracle Linux 9

Oracle Linux 9 — Kdump Might Fail on Some AMD Hardware

🟠 High   ⏱ 5–30 min  Last verified: 2 April 2023 Affected versions: Oracle Linux 9 📖 ~4 min read  •  Source: Oracle Bug 31274238 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 […]

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Amazon Linux 2 — python-mako — vulnerability — patch and remediation guide — diagnosis and fix on Amazon Linux 2

Amazon Linux 2 — python-mako — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Amazon Linux 2 📖 ~4 min read  •  Source: Amazon Linux advisory ALAS2-2023-2164 Related CVEs: CVE-2022-40023 Upstream summary: Sqlalchemy mako before 1.2.2 is vulnerable to Regular expression Denial of Service when using the Lexer class to parse. This also affects babelplugin and […]

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Ubuntu 20.04 — pcre2 — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — pcre2 — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 2 April 2023 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5627-1 Related CVEs: CVE-2022-1586 CVE-2022-1587 Upstream summary: It was discovered that PCRE incorrectly handled memory when handling certain regular expressions. An attacker could possibly use this issue to cause applications […]

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Ubuntu 16.04 — golang-1.13 — multiple vulnerabilities (19 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

Ubuntu 16.04 — golang-1.13 — multiple vulnerabilities (19 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 2 April 2023 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-6038-2 Related CVEs: CVE-2022-1705 CVE-2022-27664 CVE-2022-28131 CVE-2022-2879 CVE-2022-2880 CVE-2022-29526 CVE-2022-30629 CVE-2022-30630  +11 more Upstream summary: USN-6038-1 fixed several vulnerabilities in Go 1.18. This update provides the corresponding updates for Go […]

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Ubuntu 22.04 — filezilla — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 22.04

Ubuntu 22.04 — filezilla — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 2 April 2023 Affected versions: Ubuntu 22.04 (jammy) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-6589-1 Related CVEs: CVE-2023-48795 Upstream summary: Fabian Baeumer, Marcus Brinkmann and Joerg Schwenk discovered that the SSH protocol used in FileZilla is prone to a prefix truncation attack, known as […]

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Oracle Linux 8 — protobuf-c — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — protobuf-c — vulnerability — patch and remediation guide (ELSA-2023-6944)

🟡 Medium   ⏱ 10–30 min  Last verified: 2 April 2023 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2023-6944 Related CVEs: CVE-2022-48468 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 — cups-filters — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 9

Oracle Linux 9 — cups-filters — vulnerability — patch and remediation guide (ELSA-2023-3423)

🟠 High   ⏱ 15–60 min  Last verified: 2 April 2023 Affected versions: Oracle Linux 9 📖 ~4 min read  •  Source: ELSA advisory ELSA-2023-3423 Related CVEs: CVE-2023-24805 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 — GraalVM — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 9

Oracle Linux 9 — GraalVM — vulnerability — patch and remediation guide (ELSA-2023-12684)

🟠 High   ⏱ 15–60 min  Last verified: 2 April 2023 Affected versions: Oracle Linux 9 📖 ~4 min read  •  Source: ELSA advisory ELSA-2023-12684 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 […]

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