🟡 Medium ⏱ 5–30 min Last verified: 2 September 2023 📖 ~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 & Cross-Refs References & Further […]
🟠 High ⏱ 15–60 min Last verified: 2 September 2023 Affected versions: Debian 12 (bookworm) 📖 ~4 min read • Source: Debian Security Tracker Related CVEs: CVE-2012-6122 CVE-2012-6123 CVE-2012-6124 CVE-2012-6125 CVE-2013-1874 CVE-2013-2024 CVE-2013-4385 CVE-2014-3776 +9 more Upstream summary: Buffer overflow in the thread scheduler in Chicken before 4.8.0.1 allows attackers to cause a denial […]
🟡 Medium ⏱ 10–30 min Last verified: 2 September 2023 Affected versions: Debian 11 (bullseye) 📖 ~4 min read • Source: Debian Security Tracker Related CVEs: CVE-2009-3474 CVE-2009-3475 CVE-2009-3476 CVE-2015-0851 CVE-2018-0486 CVE-2018-0489 CVE-2019-9628 CVE-2023-36661 Upstream summary: OpenSAML 2.x before 2.2.1 and XMLTooling 1.x before 1.2.1, as used by Internet2 Shibboleth Service Provider 2.x before […]
🟠 High ⏱ 15–60 min Last verified: 25 May 2026 Affected versions: Amazon Linux 2 📖 ~4 min read • Source: Amazon Linux advisory ALAS2LIVEPATCH-2024-164 Related CVEs: CVE-2023-6040 CVE-2023-6606 Upstream summary: An out-of-bounds access vulnerability involving netfilter was reported and fixed as: f1082dd31fe4 (netfilter: nf_tables: Reject tables of unsupported family); While creating a new […]
🟡 Medium ⏱ 10–30 min Last verified: 2 September 2023 Affected versions: Ubuntu 22.04 (jammy) 📖 ~4 min read • Source: Ubuntu Security Notice USN-7464-1 Related CVEs: CVE-2022-25887 CVE-2018-19351 CVE-2018-21030 CVE-2019-10255 CVE-2019-10856 CVE-2019-9644 CVE-2020-26215 CVE-2022-24758 +1 more Upstream summary: It was discovered that Jupyter Notebook did not properly parse HTML comments under certain circumstances. […]
The perf tool is the Linux kernel’s built-in performance analysis framework, capable of sampling CPU events, tracing system calls, counting hardware performance counters, and generating flame graphs — all without any changes to the application under test. On RHEL 9, perf integrates tightly with the kernel’s BPF and tracepoint subsystems, making it one of the […]
🟢 Low ⏱ 5–15 min Last verified: 2 September 2023 Affected versions: Ubuntu 22.04 (jammy) 📖 ~4 min read • Source: Ubuntu Security Notice USN-7336-1 Related CVEs: CVE-2021-30184 Upstream summary: Michael Vaughan discovered an overflow vulnerability in GNU Chess that occurs when reading a specially crafted Portable Game Notation (PGN) file. An attacker could […]
🟡 Medium ⏱ 10–30 min Last verified: 2 September 2023 Affected versions: CentOS Stream 9 📖 ~4 min read • Source: AlmaLinux/RHEL advisory ALSA-2024:9158 Related CVEs: CVE-2020-27827 CVE-2021-43612 CVE-2023-41910 Upstream summary: LLDP is an industry standard protocol designed to supplant proprietary Link-Layer protocols such as EDP or CDP. The goal of LLDP is to […]
![How To Install Linux, Nginx, MySQL, PHP (LEMP stack) on Ubuntu 20.04 [Quickstart] — step-by-step Linux tutorial on Progressive Robot](https://www.progressiverobot.com/wp-content/uploads/2026/05/how-to-install-linux-nginx-mysql-php-lemp-stack-on-ubuntu-20-04-quickstart-81487-featured.png "How To Install Linux, Nginx, MySQL, PHP (LEMP stack) on Ubuntu 20.04 [Quickstart] 9")
In this quickstart guide, we’ll install a LEMP stack (Nginx, MySQL and PHP-FPM) on an Ubuntu 20.04 server.
Introduction This guide explains how to Configure OpenDKIM with Postfix on Debian 12 on Debian 12 Bookworm. Debian Bookworm 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 12 install with the […]
