Linux

AlmaLinux 8 — mingw-libtiff — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — mingw-libtiff — 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-2026:14929 Related CVEs: CVE-2026-4775 CVE-2025-8176 CVE-2025-9900 Upstream summary: The libtiff package contains a library of functions for manipulating TIFF (Tagged Image File Format) image format files. TIFF is a widely used file […]

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SLES 12 — openssh — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on SLES 12

SLES 12 — openssh — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🔴 Critical   ⏱ 15–90 min  Last verified: 5 June 2026 Affected versions: SLES 12 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2016:0117-1 (see also SUSE bugzilla) Related CVEs: CVE-2016-0777 CVE-2026-35385 CVE-2023-38408 CVE-2021-41617 CVE-2008-1483 CVE-2016-10010 CVE-2026-35414 CVE-2025-61984  +12 more Upstream summary: The resend_bytes function in roaming_common.c in the client in OpenSSH 5.x, 6.x, and […]

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How to Take a System Snapshot Before Upgrades on RHEL 10 — step-by-step RHEL 10 tutorial on Progressive Robot

How to Take a System Snapshot Before Upgrades on RHEL 10

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 […]

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Oracle Linux 10 — nginx — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 10

Oracle Linux 10 — nginx — vulnerability — patch and remediation guide

🔴 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 […]

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Red Hat Enterprise Linux 7 — firefox — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Red Hat Enterprise Linux 7

Red Hat Enterprise Linux 7 — firefox — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 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 […]

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Debian 13 — libxml2 — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — libxml2 — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 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 […]

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Common Problems 115982

Ubuntu 26.04 LTS – Wi-Fi adapter not detected after install – Fix & Prevention

🟠 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 […]

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Common Problems 113987

RHEL 10 – New kernel installed but old kernel still boots by default – Fix & Prevention

🟡 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 & […]

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How to Monitor Kubernetes with Prometheus and Grafana on RHEL 9 — step-by-step RHEL 9 tutorial on Progressive Robot

How to Monitor Kubernetes with Prometheus and Grafana on RHEL 9

Prometheus and Grafana are the de facto standard monitoring stack for Kubernetes clusters. Prometheus is a time-series metrics database that scrapes metrics from Kubernetes components (API server, kubelet, etcd) and from applications via HTTP endpoints in a pull-based model. Grafana is a visualisation platform that queries Prometheus and displays metrics as interactive dashboards. The kube-prometheus-stack […]

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AlmaLinux 9 — gnutls — multiple vulnerabilities (14 CVEs) — patch and remediation guide — diagnosis and fix on AlmaLinux 9

AlmaLinux 9 — gnutls — multiple vulnerabilities (14 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 9 📖 ~4 min read  •  Source: AlmaLinux ALSA ALSA-2026:4188 Related CVEs: CVE-2025-14831 CVE-2025-9820 CVE-2025-32988 CVE-2025-32989 CVE-2025-32990 CVE-2025-6395 CVE-2024-12243 CVE-2024-28834  +6 more Upstream summary: The gnutls packages provide the GNU Transport Layer Security (GnuTLS) library, which implements cryptographic algorithms and protocols […]

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