Linux

Como Atualizar para o Ubuntu 16.04 LTS — step-by-step Linux tutorial on Progressive Robot

Como Atualizar para o Ubuntu 16.04 LTS

<$>[warning] Atenção: Uma versão anterior desse guia incluía uma menção aos sistemas Ubuntu 14.04. Embora uma atualização a partir do 14.04 possa completar com sucesso, atualizações entre versões LTS não estão habilitadas por padrão até o primeiro ponto de versão, e é…

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openSUSE Tumbleweed — libcacard0 — vulnerability — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — libcacard0 — 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-2017:1058-1 (see also SUSE bugzilla) Related CVEs: CVE-2017-6414 Upstream summary: Memory leak in the vcard_apdu_new function in card_7816.c in libcacard before 2.5.3 allows local guest OS users to cause a denial of […]

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How to Enable OCSP Stapling on Nginx on Debian 10 — step-by-step Debian 10 tutorial on Progressive Robot

How to Enable OCSP Stapling on Nginx on Debian 10

Introduction Debian 10 Buster is built around the ethos of stability and free software. Setting up enable ocsp stapling on nginx on debian 10 on Buster leverages the same proven Debian packaging system that powers millions of servers worldwide, while benefiting from the latest upstream releases included in the Buster freeze. Follow each step carefully […]

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

openSUSE Tumbleweed — kdm — 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-SR:2010:009 (see also SUSE bugzilla) Related CVEs: CVE-2010-0436 Upstream summary: Race condition in backend/ctrl.c in KDM in KDE Software Compilation (SC) 2.2.0 through 4.4.2 allows local users to change the permissions of […]

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Oracle Linux 8 — libwmf — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — libwmf — vulnerability — patch and remediation guide (ELSA-2019-2722)

🟢 Low   ⏱ 5–15 min  Last verified: 12 January 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2019-2722 Related CVEs: CVE-2019-6978 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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openSUSE Tumbleweed — luajit — vulnerability — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — luajit — vulnerability — patch and remediation guide

🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE advisory SUSE-CU-2020:198-1 Related CVEs: CVE-2019-19391 Upstream summary: In LuaJIT through 2.0.5, as used in Moonjit before 2.1.2 and other products, debug.getinfo has a type confusion issue that leads to arbitrary memory write or […]

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How to Set Up NFS File Sharing on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Set Up NFS File Sharing on RHEL 8

Network File System (NFS) is a distributed filesystem protocol that allows RHEL 8 servers to export directories over the network so that client machines can mount and use them as if they were local storage. NFS is a cornerstone of Linux infrastructure, used in everything from home lab setups to large-scale HPC clusters and virtualization […]

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How to Set Up Alertmanager Email Notifications on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Set Up Alertmanager Email Notifications on Debian 9

Introduction This guide explains how to Set Up Alertmanager Email Notifications on Debian 9 on Debian 9 Stretch. Debian Stretch 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 9 install with […]

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What is YUM? — step-by-step Linux tutorial on Progressive Robot

What is YUM?

YUM is a software package management utility used in many popular Linux distributions, including Fedora and CentOS. YUM is a front-end for the RPM package manager, meaning that it manages packages in the .rpm file format.

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openSUSE Tumbleweed — xinetd — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — xinetd — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2014:0466-1 (see also SUSE bugzilla) Related CVEs: CVE-2012-0862 CVE-2013-4342 Upstream summary: builtins.c in Xinetd before 2.3.15 does not check the service type when the tcpmux-server service is enabled, which exposes all enabled […]

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