Linux

How to Manage Users and Groups on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Manage Users and Groups on Debian 9

Introduction Deploying manage users and groups on debian 9 on a Debian 9 Stretch 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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Debian 11 — nspr — multiple vulnerabilities (6 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — nspr — multiple vulnerabilities (6 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 14 October 2021 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2009-0689 CVE-2009-2463 CVE-2013-5607 CVE-2014-1545 CVE-2015-7183 CVE-2016-1951 Upstream summary: Array index error in the (1) dtoa implementation in dtoa.c (aka pdtoa.c) and the (2) gdtoa (aka new dtoa) implementation […]

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Arch Linux — impacket — vulnerability — patch and remediation guide — diagnosis and fix on Arch Linux

Arch Linux — impacket — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Arch Linux (rolling release) 📖 ~4 min read  •  Source: Arch ASA ASA-202107-56 Related CVEs: CVE-2021-31800 Upstream summary: Type: directory traversal. Status: Fixed. Affected: 0.9.22-1. Fixed in: 0.9.23-1. Group: AVG-1916. Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis […]

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

Debian 11 — pgpdump — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 14 October 2021 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2016-4021 Upstream summary: The read_binary function in buffer.c in pgpdump before 0.30 allows context-dependent attackers to cause a denial of service (infinite loop and CPU consumption) via crafted […]

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Oracle Linux 8 — openssl security, bug fix, and — enhancement update — new behaviour and fixes — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — openssl security, bug fix, and — enhancement update — new behaviour and fixes (ELSA-2020-4514)

🟢 Low   ⏱ 5–15 min  Last verified: 13 October 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2020-4514 Related CVEs: CVE-2019-1551 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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Debian 11 — gv — multiple vulnerabilities (5 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — gv — multiple vulnerabilities (5 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 13 October 2021 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2002-0838 CVE-2002-1569 CVE-2004-1717 CVE-2006-5864 CVE-2010-2056 Upstream summary: Buffer overflow in (1) gv 3.5.8 and earlier, (2) gvv 1.0.2 and earlier, (3) ggv 1.99.90 and earlier, (4) gnome-gv, and […]

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

AlmaLinux 8 — powertop — 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-2021:4195 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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Oracle Linux 8 — qt5-qtbase — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — qt5-qtbase — vulnerability — patch and remediation guide (ELSA-2022-1796)

🟡 Medium   ⏱ 10–30 min  Last verified: 13 October 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2022-1796 Related CVEs: CVE-2021-38593 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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