Linux

Alpine Linux 3.19 — ctags — vulnerability — patch and remediation guide — diagnosis and fix on Alpine Linux 3.19

Alpine Linux 3.19 — ctags — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Alpine Linux 3.19 / fixed in 5.8-r5 📖 ~4 min read  •  Source: Alpine secdb entry — ctags 5.8-r5 Related CVEs: CVE-2014-7204 Upstream summary: Alpine community repository for vv3.19 ships ctags 5.8-r5 which addresses CVE-2014-7204. Table of contents Symptom & Impact Environment […]

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How to Configure ACLs on Ext4 File Systems on Debian 12 — step-by-step Debian 12 tutorial on Progressive Robot

How to Configure ACLs on Ext4 File Systems on Debian 12

Introduction How to Configure ACLs on Ext4 File Systems on Debian 12 is a fundamental operation for any administrator maintaining a Debian 12 Bookworm server. Debian 12 Bookworm ships with the Linux 6.12 kernel, updated toolchains, and a fully refreshed package archive — meaning version numbers, configuration file paths, and some dependency chains differ from […]

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Debian 11 — gcc-9 — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — gcc-9 — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 21 December 2023 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2019-15847 CVE-2023-4039 Upstream summary: The POWER9 backend in GNU Compiler Collection (GCC) before version 10 could optimize multiple calls of the __builtin_darn intrinsic into a single call, thus […]

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openSUSE Leap 15.5 — libdwarf1 — vulnerability — patch and remediation guide — diagnosis and fix on openSUSE Leap 15.5

openSUSE Leap 15.5 — libdwarf1 — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: openSUSE Leap 15.5 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2023:2784-1 (see also SUSE bugzilla) Related CVEs: CVE-2020-27545 Upstream summary: libdwarf before 20201017 has a one-byte out-of-bounds read because of an invalid pointer dereference via an invalid line table in a […]

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Debian 12 — resteasy3.0 — multiple vulnerabilities (10 CVEs) — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — resteasy3.0 — multiple vulnerabilities (10 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 21 December 2023 Affected versions: Debian 12 (bookworm) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2016-6345 CVE-2016-6346 CVE-2016-6347 CVE-2016-6348 CVE-2016-9606 CVE-2017-7561 CVE-2020-10688 CVE-2020-1695  +2 more Upstream summary: RESTEasy allows remote authenticated users to obtain sensitive information by leveraging "insufficient use of random values" […]

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Debian 11 — galera-4 — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — galera-4 — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 21 December 2023 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2023-5157 Upstream summary: A vulnerability was found in MariaDB. An OpenVAS port scan on ports 3306 and 4567 allows a malicious remote client to cause a denial of […]

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How to Set Up Automatic Security Updates on Debian 12 — step-by-step Debian 12 tutorial on Progressive Robot

How to Set Up Automatic Security Updates on Debian 12

Introduction Deploying set up automatic security updates on debian 12 on a Debian 12 Bookworm 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 Ensure […]

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How to Implement Network Segmentation on CentOS Stream 9 — step-by-step CentOS Stream 9 tutorial on Progressive Robot

How to Implement Network Segmentation on CentOS Stream 9

Introduction Setting up implement network segmentation on centos stream 9 on a CentOS Stream 9 server is a common task for system administrators, DevOps engineers, and site reliability engineers. This guide explains how to Implement Network Segmentation on CentOS Stream 9, with all the commands you need, the SELinux and firewalld considerations to keep in […]

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Amazon Linux 2023 — perl-Pod-Perldoc — vulnerability — patch and remediation guide — diagnosis and fix on Amazon Linux 2023

Amazon Linux 2023 — perl-Pod-Perldoc — vulnerability — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Amazon Linux 2023 📖 ~4 min read  •  Source: Amazon Linux advisory ALAS2023-2023-217 Related CVEs: CVE-2023-31486 Upstream summary: HTTP::Tiny 0.082, a Perl core module since 5.13.9 and available standalone on CPAN, has an insecure default TLS configuration where users must opt in […]

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Debian 12 — libdbd-firebird-perl — vulnerability — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — libdbd-firebird-perl — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 20 December 2023 Affected versions: Debian 12 (bookworm) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2015-2788 Upstream summary: Multiple stack-based buffer overflows in the ib_fill_isqlda function in dbdimp.c in DBD-Firebird before 1.19 allow remote attackers to have unspecified impact via unknown vectors that […]

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