Oracle Linux 9 — Unbreakable Enterprise kernel — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 9

Oracle Linux 9 — Unbreakable Enterprise kernel — vulnerability — patch and remediation guide (ELSA-2025-20480)

November 2, 2023
Linux
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🟠 High ⏱ 15–60 min Last verified: 2 November 2023 Affected versions: Oracle Linux 9 📖 ~4 min read • Source: ELSA advisory ELSA-2025-20480 Related CVEs: CVE-2012-3430 CVE-2015-6937 CVE-2016-5244 CVE-2018-12928 CVE-2018-5332 CVE-2018-5333 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]

Debian 12 Filesystem Remounted Read-Only After Error

November 2, 2023
Linux
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🟠 High ⏱ 5–30 min Last verified: 2 November 2023 Affected versions: Debian 12 📖 ~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 & […]

How to Set Up Horizontal Pod Autoscaling in Kubernetes on Debian 12

November 2, 2023
Linux
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Introduction This guide explains how to Set Up Horizontal Pod Autoscaling in Kubernetes 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 […]

Oracle Linux 9 — buildah — security and stability fixes — required update — diagnosis and fix on Oracle Linux 9

Oracle Linux 9 — buildah — security and stability fixes — required update (ELSA-2024-3827)

November 1, 2023
Linux
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🟡 Medium ⏱ 10–30 min Last verified: 1 November 2023 Affected versions: Oracle Linux 9 📖 ~4 min read • Source: ELSA advisory ELSA-2024-3827 Related CVEs: CVE-2023-45290 CVE-2024-28180 CVE-2024-28176 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification […]

How to Set Up a Network Bridge on CentOS Stream 9

November 1, 2023
CentOS
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Introduction Setting up set up a network bridge on centos stream 9 on a CentOS Stream 9 server is a common task for system administrators, DevOps engineers, and site reliability engineers. This guide explains how to Set Up a Network Bridge on CentOS Stream 9, with all the commands you need, the SELinux and firewalld […]

Debian 12 GRUB Rescue Prompt After Disk Layout Change

November 1, 2023
Linux
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🔴 Critical ⏱ 5–30 min Last verified: 1 November 2023 Affected versions: Debian 12 📖 ~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 & […]

Debian 11 — heat — multiple vulnerabilities (6 CVEs) — patch and remediation guide

November 1, 2023
Linux
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🟡 Medium ⏱ 10–30 min Last verified: 1 November 2023 Affected versions: Debian 11 (bullseye) 📖 ~4 min read • Source: Debian Security Tracker Related CVEs: CVE-2013-6426 CVE-2013-6428 CVE-2014-3801 CVE-2015-5295 CVE-2016-9185 CVE-2023-1625 Upstream summary: The cloudformation-compatible API in OpenStack Orchestration API (Heat) before Havana 2013.2.1 and Icehouse before icehouse-2 does not properly enforce policy […]

Debian 12 — golang-v2ray-core — vulnerability — patch and remediation guide

November 1, 2023
Linux
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🟢 Low ⏱ 5–15 min Last verified: 1 November 2023 Affected versions: Debian 12 (bookworm) 📖 ~4 min read • Source: Debian Security Tracker Related CVEs: CVE-2021-4070 Upstream summary: Off-by-one Error in GitHub repository v2fly/v2ray-core prior to 4.44.0. Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis […]

Debian 12 — konversation — multiple vulnerabilities (7 CVEs) — patch and remediation guide

November 1, 2023
Linux
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🟡 Medium ⏱ 10–30 min Last verified: 1 November 2023 Affected versions: Debian 12 (bookworm) 📖 ~4 min read • Source: Debian Security Tracker Related CVEs: CVE-2005-0129 CVE-2005-0130 CVE-2005-0131 CVE-2007-4400 CVE-2009-5050 CVE-2014-8483 CVE-2017-15923 Upstream summary: The Quick Buttons feature in Konversation 0.15 allows remote attackers to execute certain IRC commands via a channel name […]

Debian 12 — mactelnet — vulnerability — patch and remediation guide

November 1, 2023
Linux
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🟢 Low ⏱ 5–15 min Last verified: 1 November 2023 Affected versions: Debian 12 (bookworm) 📖 ~4 min read • Source: Debian Security Tracker Related CVEs: CVE-2016-7115 Upstream summary: Buffer overflow in the handle_packet function in mactelnet.c in the client in MAC-Telnet 0.4.3 and earlier allows remote TELNET servers to execute arbitrary code via […]

Linux

Oracle Linux 9 — Unbreakable Enterprise kernel — vulnerability — patch and remediation guide (ELSA-2025-20480)

Debian 12 Filesystem Remounted Read-Only After Error

How to Set Up Horizontal Pod Autoscaling in Kubernetes on Debian 12

Oracle Linux 9 — buildah — security and stability fixes — required update (ELSA-2024-3827)

How to Set Up a Network Bridge on CentOS Stream 9

Debian 12 GRUB Rescue Prompt After Disk Layout Change

Debian 11 — heat — multiple vulnerabilities (6 CVEs) — patch and remediation guide

Debian 12 — golang-v2ray-core — vulnerability — patch and remediation guide

Debian 12 — konversation — multiple vulnerabilities (7 CVEs) — patch and remediation guide

Debian 12 — mactelnet — vulnerability — patch and remediation guide

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