🟠 High ⏱ 15–60 min Last verified: 25 May 2026 Affected versions: Amazon Linux 2 📖 ~4 min read • Source: Amazon Linux advisory ALAS2-2021-1697 Related CVEs: CVE-2021-3570 CVE-2021-3571 Upstream summary: A flaw was found in the ptp4l program of the linuxptp package. A missing length check when forwarding a PTP message between ports […]
Introduction How to Configure Jail Networking on FreeBSD 13 is a core administration task for any FreeBSD 13 server operator. FreeBSD 13 ships with the 15.0-RELEASE kernel, ZFS as the default root filesystem, Capsicum capability sandboxing improvements, and an updated ports tree. Unlike Linux distributions, FreeBSD uses rc(8) for service management, pf for packet filtering, […]
🟢 Low ⏱ 5–15 min Last verified: 4 June 2021 Affected versions: FreeBSD 13 📖 ~4 min read • Source: FreeBSD VuXML VuXML topic: mod_dosevasive — insecure temporary file creation Upstream summary: An LSS Security Advisory reports: When a denial of service attack is detected, mod_dosevasive will, among other things, create a temporary file […]
🟢 Low ⏱ 5–15 min Last verified: 4 June 2021 Affected versions: FreeBSD 13 📖 ~4 min read • Source: FreeBSD VuXML VuXML topic: urban — stack overflow vulnerabilities Related CVEs: CVE-2005-2864 Upstream summary: Several filename-related stack overflow bugs allow a local attacker to elevate its privileges to the games group, since urban is […]
🟠 High ⏱ 15–60 min Last verified: 25 May 2026 Affected versions: Arch Linux (rolling release) 📖 ~4 min read • Source: Arch ASA ASA-202102-26 Related CVEs: CVE-2021-26910 Upstream summary: Type: privilege escalation. Status: Fixed. Affected: 0.9.64.2-1. Fixed in: 0.9.64.4-1. Group: AVG-1545. Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis […]
Python 3 is available on RHEL 8 through the AppStream module system, which lets you install and switch between multiple Python versions without compiling from source. Unlike older RHEL releases, RHEL 8 ships with Python 3.6, 3.8, 3.9, and (via later AppStream streams) 3.11 all coexisting on the same system. This tutorial shows you how […]
🟢 Low ⏱ 5–15 min Last verified: 3 June 2021 Affected versions: Oracle Linux 8 📖 ~4 min read • Source: ELSA advisory ELSA-2021-4236 Related CVEs: CVE-2020-8037 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance […]
🟡 Medium ⏱ 10–30 min Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read • Source: AlmaLinux ALSA ALBA-2021:1696 Upstream summary: For detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section. Table of contents Symptom & Impact Environment & Reproduction Root Cause […]
Introduction This tutorial covers How to Implement Mandatory Access Control on SLES 15 on SLES 15. SLES 15 (SUSE Linux Enterprise Server 16) is SUSE’s enterprise-grade Linux distribution. It uses the zypper package manager, AppArmor for mandatory access control, and systemctl for service management. Prerequisites Ensure your SLES 15 system is up to date: zypper […]
Introduction IBM AIX 7.2 is the latest release of IBM’s enterprise-grade UNIX operating system, running on IBM Power Systems hardware. Known for its reliability, security, and performance in mission-critical environments, AIX 7.2 introduces enhanced virtualization, security hardening, and cloud integration features. This guide covers how to profile cpu with tprof on ibm aix 7.2 on […]
