2022

Gentoo Linux — net-mail/dovecot — multiple vulnerabilities (8 CVEs) — patch and remediation guide — diagnosis and fix on Gentoo Linux

Gentoo Linux — net-mail/dovecot — multiple vulnerabilities (8 CVEs) — patch and remediation guide

  • December 31, 2022
  • Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Gentoo Linux 📖 ~4 min read  •  Source: Gentoo GLSA GLSA-202310-19 Related CVEs: CVE-2022-30550 CVE-2020-24386 CVE-2020-25275 CVE-2020-12100 CVE-2020-12673 CVE-2020-12674 CVE-2021-29157 CVE-2021-33515 Upstream summary: A vulnerability has been discovered in Dovecot. Please review the CVE identifier referenced below for details. Table of contents […]

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Gentoo Linux — dev-ruby/rails — vulnerability — patch and remediation guide — diagnosis and fix on Gentoo Linux

Gentoo Linux — dev-ruby/rails — vulnerability — patch and remediation guide

  • December 31, 2022
  • Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Gentoo Linux 📖 ~4 min read  •  Source: Gentoo GLSA GLSA-202408-24 Related CVEs: CVE-2022-32224 Upstream summary: Multiple vulnerabilities have been discovered in Ruby on Rails. Please review the CVE identifiers referenced below for details. Table of contents Symptom & Impact Environment & […]

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Common Problems 117068

Ubuntu 22.04 LTS – root filesystem full causes service failures – Fix & Prevention

  • December 31, 2022
  • Linux
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🟠 High   ⏱ 5–30 min  Last verified: 20 May 2026 Affected versions: Ubuntu 22.04 LTS (Jammy) 📖 ~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 […]

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IBM AIX 7.3 — CVE-1999-0022 — buffer overflow — patch and remediation guide — diagnosis and fix on IBM AIX 7.3

IBM AIX 7.3 — CVE-1999-0022 — buffer overflow — patch and remediation guide

🟠 High   ⏱ 30–90 min  Last verified: 25 May 2026 Affected versions: IBM AIX 7.3 📖 ~4 min read  •  Source: NVD CVE-1999-0022, IBM PSIRT advisory page CVE: CVE-1999-0022 NVD summary: Local user gains root privileges via buffer overflow in rdist, via expstr() function. References: sunsolve.sun.com/pub-cgi/retrieve.pl?doctype=col   sunsolve.sun.com/pub-cgi/retrieve.pl?doctype=col Table of contents Symptom & Impact […]

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IBM AIX 7.3 — CVE-2021-29816 — vulnerability — patch and remediation guide — diagnosis and fix on IBM AIX 7.3

IBM AIX 7.3 — CVE-2021-29816 — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 15–45 min  Last verified: 25 May 2026 Affected versions: IBM AIX 7.3 📖 ~4 min read  •  Source: NVD CVE-2021-29816, IBM Support Bulletin CVE: CVE-2021-29816 NVD summary: IBM Jazz for Service Management 1.1.3.10 and IBM Tivoli Netcool/OMNIbus_GUI is vulnerable to cross-site request forgery which could allow an attacker to execute malicious […]

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Debian 11 — libnet-cidr-perl — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — libnet-cidr-perl — vulnerability — patch and remediation guide

  • December 31, 2022
  • Linux
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🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2021-4456 Upstream summary: Net::CIDR versions before 0.24 for Perl mishandle leading zeros in IP CIDR addresses, which may have unspecified impact. The functions `addr2cidr` and `cidrlookup` may return […]

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How to Use netboot for Diskless Clients on IBM AIX 7.3 — step-by-step IBM AIX 7.3 tutorial on Progressive Robot

How to Use netboot for Diskless Clients on IBM AIX 7.3

  • December 31, 2022
  • IBM AIX
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Introduction IBM AIX 7.3 is the latest release of IBM’s enterprise-grade UNIX operating system, running on IBM Power Systems hardware. Known for its reliability, security, and performance in mission-critical environments, AIX 7.3 introduces enhanced virtualization, security hardening, and cloud integration features. This guide covers how to use netboot for diskless clients on IBM AIX 7.3 […]

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Common Problems 111722

Windows Server 2022 — Hyper-V Containers show nested virtualization startup failures — Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 19 May 2026 Affected versions: Windows Server 2022 📖 ~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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Debian 11 — libntlm — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — libntlm — vulnerability — patch and remediation guide

  • December 31, 2022
  • Linux
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🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2019-17455 Upstream summary: Libntlm through 1.5 relies on a fixed buffer size for tSmbNtlmAuthRequest, tSmbNtlmAuthChallenge, and tSmbNtlmAuthResponse read and write operations, as demonstrated by a stack-based buffer over-read […]

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

Debian 11 — simpleproxy — vulnerability — patch and remediation guide

  • December 31, 2022
  • Linux
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🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2005-1857 Upstream summary: Format string vulnerability in simpleproxy before 3.4 allows remote malicious HTTP proxies to execute arbitrary code via format string specifiers in a reply. Table of […]

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