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

Debian 11 — chkrootkit — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 12 March 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2014-0476 Upstream summary: The slapper function in chkrootkit before 0.50 does not properly quote file paths, which allows local users to execute arbitrary code via a Trojan horse […]

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Alpine Linux edge — librewolf — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Alpine Linux edge

Alpine Linux edge — librewolf — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Alpine Linux edge / fixed in 99.0-r0 📖 ~4 min read  •  Source: Alpine secdb entry — librewolf 99.0-r0 Related CVEs: CVE-2022-1097 CVE-2022-24713 CVE-2022-28281 CVE-2022-28282 CVE-2022-28283 CVE-2022-28284 CVE-2022-28285 CVE-2022-28286  +12 more Upstream summary: Alpine community repository for vedge ships librewolf 99.0-r0 which […]

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

Debian 11 — schroot — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 12 March 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2022-2787 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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Ubuntu 18.04 — grub2-signed — multiple vulnerabilities (17 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — grub2-signed — multiple vulnerabilities (17 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 12 March 2022 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4992-1 Related CVEs: CVE-2020-14372 CVE-2020-25632 CVE-2020-27749 CVE-2020-27779 CVE-2021-20225 CVE-2021-20233 https://wiki.ubuntu.com/SecurityTeam/KnowledgeBase/GRUB2SecureBootBypass2021 https://launchpad.net/bugs/1889556  +9 more Upstream summary: Máté Kukri discovered that the acpi command in GRUB 2 allowed privileged users to load […]

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FreeBSD 12 — mysql-client — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — mysql-client — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 12 March 2022 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: MySQL — Multiple vulnerabilities Related CVEs: CVE-2004-0381 CVE-2004-0836 CVE-2018-25032 CVE-2022-1292 CVE-2022-1941 CVE-2022-2097 CVE-2022-21455 CVE-2022-21509  +12 more Upstream summary: Oracle reports: This Critical Patch Update contains 24 new security patches for […]

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How to Configure ZFS on Debian 11 — step-by-step Debian 11 tutorial on Progressive Robot

How to Configure ZFS on Debian 11

Introduction This guide explains how to Configure ZFS on Debian 11 on Debian 11 Bullseye. Debian Bullseye uses systemd for service management, nftables as the underlying packet filter (with ufw or iptables front-ends still available), and AppArmor for mandatory access control. Every command is designed for a minimal Debian 11 install with the standard repositories […]

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Common Problems 120648

Debian 11 – software RAID array stays degraded and rebuild does not start

🔴 Critical   ⏱ 5–30 min  Last verified: 12 March 2022 Affected versions: Debian 11 📖 ~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 & […]

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openSUSE Tumbleweed — nbd — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — nbd — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2022:1276-1 (see also SUSE bugzilla) Related CVEs: CVE-2022-26495 CVE-2005-3534 CVE-2015-0847 Upstream summary: In nbd-server in nbd before 3.24, there is an integer overflow with a resultant heap-based buffer overflow. A value of […]

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How to Install Ruby on Rails on CentOS Stream 9 — step-by-step CentOS Stream 9 tutorial on Progressive Robot

How to Install Ruby on Rails on CentOS Stream 9

Introduction CentOS Stream 9 ships with a stable, security-hardened base that makes deploying install ruby on rails on centos stream 9 both straightforward and auditable. This tutorial covers the complete procedure for how to Install Ruby on Rails on CentOS Stream 9, including dnf module streams where applicable, systemd unit management, and the firewalld rules […]

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IBM AIX 7.2 — CVE-2021-29771 — xss — patch and remediation guide — diagnosis and fix on IBM AIX 7.2

IBM AIX 7.2 — CVE-2021-29771 — xss — patch and remediation guide

🟡 Medium   ⏱ 15–45 min  Last verified: 11 March 2022 Affected versions: IBM AIX 7.2 📖 ~4 min read  •  Source: NVD CVE-2021-29771, IBM Support Bulletin CVE: CVE-2021-29771 NVD summary: IBM InfoSphere Information Server 11.7 is vulnerable to cross-site scripting. This vulnerability allows users to embed arbitrary JavaScript code in the Web UI thus […]

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