Linux

Oracle Linux 8 — frr — security and stability fixes — required update — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — frr — security and stability fixes — required update (ELSA-2023-5219)

🟠 High   ⏱ 15–60 min  Last verified: 10 September 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2023-5219 Related CVEs: CVE-2023-38802 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 8 — libpsl — vulnerability — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — libpsl — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read  •  Source: AlmaLinux ALSA ALEA-2020:4555 Upstream summary: For detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section. Table of contents Symptom & Impact Environment & Reproduction Root Cause […]

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Debian 11 — python-docutils — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — python-docutils — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 10 September 2021 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2009-5042 Upstream summary: python-docutils allows insecure usage of temporary files Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – […]

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Debian 10 — hyperkitty — vulnerability — patch and remediation guide — diagnosis and fix on Debian 10

Debian 10 — hyperkitty — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 10 September 2021 Affected versions: Debian 10 (buster) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2021-33038 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 115399

RHEL 7 systemctl unit failure caused by invalid drop-in override

🟠 High   ⏱ 5–30 min  Last verified: 10 September 2021 Affected versions: RHEL 7 📖 ~2 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 — runit — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — runit — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 10 September 2021 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2006-1319 Upstream summary: chpst in runit 1.3.3-1 for Debian GNU/Linux, when compiled on little endian i386 machines against dietlibc, does not properly handle when multiple groups are specified […]

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AlmaLinux 8 — cheese — vulnerability — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — cheese — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read  •  Source: AlmaLinux ALSA ALBA-2021:1773 Upstream summary: For detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section. Table of contents Symptom & Impact Environment & Reproduction Root Cause […]

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Debian 11 — aubio — multiple vulnerabilities (9 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — aubio — multiple vulnerabilities (9 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 10 September 2021 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2017-17054 CVE-2017-17554 CVE-2017-17555 CVE-2018-14521 CVE-2018-14522 CVE-2018-14523 CVE-2018-19800 CVE-2018-19801  +1 more Upstream summary: In aubio 0.4.6, a divide-by-zero error exists in the function new_aubio_source_wavread() in source_wavread.c, which may lead […]

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Debian 11 — ruby-oauth — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — ruby-oauth — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 10 September 2021 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2016-11086 Upstream summary: lib/oauth/consumer.rb in the oauth-ruby gem through 0.5.4 for Ruby does not verify server X.509 certificates if a certificate bundle cannot be found, which allows man-in-the-middle […]

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How To Install and Secure Memcached on Ubuntu 20.04 — step-by-step Linux tutorial on Progressive Robot

How To Install and Secure Memcached on Ubuntu 20.04

In this guide, you will learn how to install and configure a Memcached server. You’ll also learn how to add authentication to secure Memcached using Simple Authentication and Security Layer (SASL). Finally, you’ll learn how to bind Memcached to a local or private network interface to ensure that it is only accessible on trusted networks, by authenticated users.

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