How the Iptables Firewall Works
The iptables firewall is a good way to protect your server from unwanted traffic from the internet. In this guide, we’ll discuss the general idea behind the iptables firewall and how rules interact with each other.
AlmaLinux 8 — pandoc — multiple vulnerabilities (3 CVEs) — patch and remediation guide
🟠 High ⏱ 15–60 min Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read • Source: AlmaLinux ALSA ALSA-2022:5597 Related CVEs: CVE-2022-24724 CVE-2023-24824 CVE-2020-5238 Upstream summary: Pandoc is a markdown/markup conversion tool. The version of pandoc in AlmaLinux 8 CRB uses cmark-gfm (GitHub's extended version of the C reference implementation […]
Amazon Linux 2 — scipy — vulnerability — patch and remediation guide
🟡 Medium ⏱ 10–30 min Last verified: 25 May 2026 Affected versions: Amazon Linux 2 📖 ~4 min read • Source: Amazon Linux advisory ALAS2-2023-2160 Related CVEs: CVE-2023-29824 Upstream summary: A use-after-free issue was discovered in Py_FindObjects() function in SciPy versions prior to 1.8.0. (CVE-2023-29824) Table of contents Symptom & Impact Environment & Reproduction […]
openSUSE Tumbleweed — cri-o — multiple vulnerabilities (2 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-CU-2023:3473-1 (see also SUSE bugzilla) Related CVEs: CVE-2022-1708 CVE-2019-10214 Upstream summary: A vulnerability was found in CRI-O that causes memory or disk space exhaustion on the node for anyone with access to […]
Amazon Linux 2 — bluez — multiple vulnerabilities (7 CVEs) — patch and remediation guide
🟠 High ⏱ 15–60 min Last verified: 25 May 2026 Affected versions: Amazon Linux 2 📖 ~4 min read • Source: Amazon Linux advisory ALAS2-2024-2386 Related CVEs: CVE-2023-45866 CVE-2022-39176 CVE-2022-39177 CVE-2019-8921 CVE-2019-8922 CVE-2022-0204 CVE-2020-0556 Upstream summary: bluez: unauthorized HID device connections allows keystroke injection and arbitrary commands execution (CVE-2023-45866) Table of contents Symptom & […]
Gentoo Linux — net-p2p/bitcoind — multiple vulnerabilities (3 CVEs) — patch and remediation guide
🟡 Medium ⏱ 10–30 min Last verified: 25 May 2026 Affected versions: Gentoo Linux 📖 ~4 min read • Source: Gentoo GLSA GLSA-202408-12 Related CVEs: CVE-2023-33297 CVE-2019-15947 CVE-2020-14198 Upstream summary: Please review the CVE identifier referenced below for details. Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step […]
openSUSE Tumbleweed — libconfuse2 — multiple vulnerabilities (2 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-2022:3331-1 (see also SUSE bugzilla) Related CVEs: CVE-2022-40320 CVE-2018-14447 Upstream summary: cfg_tilde_expand in confuse.c in libConfuse 3.3 has a heap-based buffer over-read. Table of contents Symptom & Impact Environment & Reproduction Root […]
How to Configure Oracle Linux 9 for Oracle RAC
Introduction How to Configure Oracle Linux 9 for Oracle RAC on Oracle Linux 9 provides administrators with a robust, enterprise-ready workflow that integrates cleanly with systemd, SELinux, firewalld, and the modern AppStream module system. In this tutorial we will walk through every step required, from package installation to verification, so that the resulting configuration is […]
Oracle Linux 9 — Unbreakable Enterprise kernel — bug fix update — issues resolved (ELSA-2026-50170)
🟡 Medium ⏱ 5–30 min Last verified: 25 May 2026 Affected versions: Oracle Linux 9 📖 ~4 min read • Source: ELSA advisory ELSA-2026-50170 Related CVEs: CVE-2026-23401 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance […]
Gentoo Linux — app-emulation/virtualbox-modules — multiple vulnerabilities (20 CVEs) — patch and remediation guide
🟠 High ⏱ 15–60 min Last verified: 25 May 2026 Affected versions: Gentoo Linux 📖 ~4 min read • Source: Gentoo GLSA GLSA-202212-03 Related CVEs: CVE-2022-21620 CVE-2022-21621 CVE-2022-21627 CVE-2022-39421 CVE-2022-39422 CVE-2022-39423 CVE-2022-39424 CVE-2022-39425 +12 more Upstream summary: Multiple vulnerabilities have been discovered in Oracle VirtualBox. Please review the CVE identifiers referenced below for details. […]
