Package Management

FreeBSD 13 — timidity++ — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — timidity++ — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 5 June 2021 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: TiMidity++ — Multiple vulnerabilities Related CVEs: CVE-2017-11546 CVE-2017-11547 CVE-2017-11549 Upstream summary: qflb.wu of DBAPPSecurity reports: Ihe insert_note_steps function in readmidi.c in TiMidity++ 2.14.0 can cause a denial of service(divide-by-zero error […]

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Ubuntu 20.04 — keepalived — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — keepalived — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 5 June 2021 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5188-1 Related CVEs: CVE-2021-44225 Upstream summary: It was discovered that Keepalived incorrectly handled certain messages. An attacker could possibly use this issue to access-control bypass. Table of contents Symptom & […]

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

Oracle Linux 8 — firefox — vulnerability — patch and remediation guide (ELSA-2020-2379)

🟠 High   ⏱ 15–60 min  Last verified: 5 June 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2020-2379 Related CVEs: CVE-2020-12405 CVE-2020-12406 CVE-2020-12410 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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Common Problems 115401

Yum Metadata Checksum Mismatch from Repository Mirror Drift

🟡 Medium   ⏱ 5–30 min  Last verified: 5 June 2021 📖 ~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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How to Install Oracle JDK 8 on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Install Oracle JDK 8 on Debian 9

Introduction Debian 9 Stretch is built around the ethos of stability and free software. Setting up install oracle jdk 8 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 […]

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openSUSE Tumbleweed — veyon — vulnerability — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — veyon — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE security advisory (see also SUSE bugzilla) Related CVEs: CVE-2020-29074 Upstream summary: scan.c in x11vnc 0.9.16 uses IPC_CREAT|0777 in shmget calls, which allows access by actors other than the current user. Table of contents […]

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

Oracle Linux 8 — firefox — vulnerability — patch and remediation guide (ELSA-2021-4123)

🟠 High   ⏱ 15–60 min  Last verified: 5 June 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2021-4123 Related CVEs: CVE-2021-38503 CVE-2021-38507 CVE-2021-38509 CVE-2021-38504 CVE-2021-38508 CVE-2021-38506 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 — 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-2021-9307)

🟠 High   ⏱ 15–60 min  Last verified: 5 June 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2021-9307 Related CVEs: CVE-2020-36310 CVE-2021-29154 CVE-2021-23133 CVE-2020-28374 CVE-2021-31916 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative […]

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

Oracle Linux 8 — libvncserver — vulnerability — patch and remediation guide (ELSA-2021-1811)

🟡 Medium   ⏱ 10–30 min  Last verified: 5 June 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2021-1811 Related CVEs: CVE-2020-14397 CVE-2020-25708 CVE-2019-20839 CVE-2018-21247 CVE-2020-14405 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative […]

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Gentoo Linux — net-mail/fetchmail — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Gentoo Linux

Gentoo Linux — net-mail/fetchmail — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Gentoo Linux 📖 ~4 min read  •  Source: Gentoo GLSA GLSA-202209-14 Related CVEs: CVE-2021-36386 CVE-2021-39272 Upstream summary: Multiple vulnerabilities have been discovered in Fetchmail. Please review the CVE identifiers referenced below for details. Table of contents Symptom & Impact Environment & Reproduction […]

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