Introduction Setting up take a system snapshot before upgrades on a RHEL 10 server is a common task for system administrators, DevOps engineers, and site reliability engineers. This guide explains how to Take a System Snapshot Before Upgrades on RHEL 10, with all the commands you need, the SELinux and firewalld considerations to keep in […]
🔴 Critical ⏱ 15–90 min Last verified: 5 June 2026 Affected versions: Oracle Linux 10 📖 ~4 min read • Source: ELSA advisory ELSA-2026-18063 Related CVEs: CVE-2026-42945 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance […]
🟠 High ⏱ 15–60 min Last verified: 25 May 2026 Affected versions: Red Hat Enterprise Linux 7 📖 ~4 min read • Source: Red Hat advisory RHSA RHSA-2026:19704 Related CVEs: CVE-2026-6746 CVE-2026-6747 CVE-2026-6748 CVE-2026-6749 CVE-2026-6750 CVE-2026-6751 CVE-2026-6752 CVE-2026-6753 +12 more Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage […]
🟠 High ⏱ 15–60 min Last verified: 5 June 2026 Affected versions: Debian 13 (trixie) 📖 ~4 min read • Source: Debian Security Tracker Related CVEs: CVE-2004-0110 CVE-2004-0989 CVE-2007-6284 CVE-2008-3281 CVE-2008-3529 CVE-2008-4225 CVE-2008-4226 CVE-2009-2414 +12 more Upstream summary: Buffer overflow in the (1) nanohttp or (2) nanoftp modules in XMLSoft Libxml 2 (Libxml2) 2.6.0 […]
Introduction This guide explains how to Tune Kernel Parameters with sysctl on FreeBSD 15 on FreeBSD 15. FreeBSD uses the pkg(8) binary package manager, rc.conf(5) for service startup configuration, and pf(4) as its primary packet filter. There is no SELinux or AppArmor — instead, FreeBSD provides the MAC (Mandatory Access Control) framework and Capsicum for […]
🟡 Medium ⏱ 5–30 min Last verified: 4 June 2026 Affected versions: Ubuntu 26.04 LTS 📖 ~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 […]
🟠 High ⏱ 5–30 min Last verified: 4 June 2026 Affected versions: Ubuntu 26.04 LTS 📖 ~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 […]
🟡 Medium ⏱ 10–30 min Last verified: 25 May 2026 Affected versions: NetBSD 10.0 📖 ~4 min read • Source: pkgsrc audit-packages entry Related CVEs: CVE-2025-15095 Upstream summary: pkgsrc audit-packages flagged py{27,39,310,311,312,313,314}-httpbin-[0-9]* for vulnerability class 'cross-site-scripting'. Reference: https://nvd.nist.gov/vuln/detail/CVE-2025-15095 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis […]
🟡 Medium ⏱ 5–30 min Last verified: 4 June 2026 Affected versions: RHEL 10 📖 ~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 & […]
🟢 Low ⏱ 5–15 min Last verified: 4 June 2026 Affected versions: FreeBSD 15 📖 ~4 min read • Source: FreeBSD VuXML VuXML topic: Postfix — memory corruption vulnerability Related CVEs: CVE-2011-0411 CVE-2011-1720 Upstream summary: The Postfix SMTP server has a memory corruption error, when the Cyrus SASL library is used with authentication mechanisms […]
