Linux

openSUSE Tumbleweed — libxcb1 — vulnerability — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — libxcb1 — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2013:1096-1 (see also SUSE bugzilla) Related CVEs: CVE-2013-2064 Upstream summary: Integer overflow in X.org libxcb 1.9 and earlier allows X servers to trigger allocation of insufficient memory and a buffer overflow via […]

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Uma Introdução às consultas no MySQL — step-by-step Linux tutorial on Progressive Robot

Uma Introdução às consultas no MySQL

Bancos de dados são um componente chave em muitos websites e aplicações, e estão no centro de como os dados são armazenados e trocados pela Internet. Um dos aspectos mais importantes do gerenciamento de banco de dados é a prática de recuperar dados de um banco de dados, seja em…

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openSUSE Tumbleweed — ft2demos — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — ft2demos — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE advisory SUSE-SR:2009:010 (see also SUSE bugzilla) Related CVEs: CVE-2009-0946 CVE-2010-2497 CVE-2010-2805 CVE-2010-3053 CVE-2010-3054 CVE-2010-3311 CVE-2010-3814 CVE-2011-0226  +12 more Upstream summary: Multiple integer overflows in FreeType 2.3.9 and earlier allow remote attackers to execute […]

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How To Install Tinc and Set Up a Basic VPN on Ubuntu 14.04 — step-by-step Linux tutorial on Progressive Robot

How To Install Tinc and Set Up a Basic VPN on Ubuntu 14.04

In this tutorial, we will go over how to use Tinc, an open source Virtual Private Network (VPN) daemon, to create a secure VPN that your servers can communicate on as if they were on a local network. We will also demonstrate how to use Tinc to set up a secure tunnel into a private network. We will be using Ubuntu 14.04 servers, but the configurations can be adapted for use with any other OS.

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Gentoo Linux — x11-libs/gdk-pixbuf — vulnerability — patch and remediation guide — diagnosis and fix on Gentoo Linux

Gentoo Linux — x11-libs/gdk-pixbuf — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Gentoo Linux 📖 ~4 min read  •  Source: Gentoo GLSA GLSA-202012-15 Related CVEs: CVE-2020-29385 Upstream summary: It was discovered that the GDK-PixBuf library did not properly handle certain GIF images. Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis […]

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

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

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Alpine Linux edge / fixed in 4.9.3-r1 📖 ~4 min read  •  Source: Alpine secdb entry — tcpdump 4.9.3-r1 Related CVEs: CVE-2020-8037 CVE-2017-16808 CVE-2018-14468 CVE-2018-14469 CVE-2018-14470 CVE-2018-14466 CVE-2018-14461 CVE-2018-14462  +12 more Upstream summary: Alpine main repository for vedge ships tcpdump 4.9.3-r1 which […]

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How to Set Up ModSecurity WAF with Apache on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Set Up ModSecurity WAF with Apache on RHEL 8

ModSecurity is a widely-deployed open-source Web Application Firewall (WAF) that integrates directly with Apache as a module. Combined with the OWASP Core Rule Set (CRS), it provides protection against the most common web attack categories including SQL injection, cross-site scripting, and remote code execution. On RHEL 8, both the mod_security Apache module and the mod_security_crs […]

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Common Problems 119112

Ubuntu 14.04 LTS LightDM login loop after desktop update

🟠 High   ⏱ 5–30 min  Last verified: 9 February 2020 Affected versions: 14.04 LTS 📖 ~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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Common Problems 118516

Ubuntu 16.04 LTS – LVM volume group not activating at boot

🟠 High   ⏱ 5–30 min  Last verified: 9 February 2020 Affected versions: Ubuntu 16.04 LTS Ubuntu 16.04 Ubuntu 16.04.7 📖 ~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 […]

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