Linux

Alpine Linux 3.18 — prometheus-blackbox-exporter — vulnerability — patch and remediation guide — diagnosis and fix on Alpine Linux 3.18

Alpine Linux 3.18 — prometheus-blackbox-exporter — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Alpine Linux 3.18 / fixed in 0.18.0-r0 📖 ~4 min read  •  Source: Alpine secdb entry — prometheus-blackbox-exporter 0.18.0-r0 Related CVEs: CVE-2020-16248 Upstream summary: Alpine community repository for vv3.18 ships prometheus-blackbox-exporter 0.18.0-r0 which addresses CVE-2020-16248. Table of contents Symptom & Impact Environment […]

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Oracle Linux 9 — GraalVM — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 9

Oracle Linux 9 — GraalVM — vulnerability — patch and remediation guide (ELSA-2022-9954)

🟠 High   ⏱ 15–60 min  Last verified: 3 September 2023 Affected versions: Oracle Linux 9 📖 ~4 min read  •  Source: ELSA advisory ELSA-2022-9954 Related CVEs: CVE-2022-32222 CVE-2022-39399 CVE-2022-2097 CVE-2022-21618 CVE-2022-21619 CVE-2022-21626 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]

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Debian 12 — ansible — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — ansible — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 3 September 2023 Affected versions: Debian 12 (bookworm) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2013-2233 CVE-2013-4259 CVE-2014-2686 CVE-2014-3498 CVE-2014-4657 CVE-2014-4658 CVE-2014-4659 CVE-2014-4660  +12 more Upstream summary: Ansible before 1.2.1 makes it easier for remote attackers to conduct man-in-the-middle attacks by leveraging failure […]

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How to Configure NetworkManager on Debian 12 — step-by-step Debian 12 tutorial on Progressive Robot

How to Configure NetworkManager on Debian 12

Introduction Deploying configure networkmanager on debian 12 on a Debian 12 Bookworm machine is straightforward thanks to Debian’s policy-compliant packaging. Unlike rpm-based distributions, Debian stores configuration helpers in /etc/default/, uses update-rc.d for older init scripts, and provides dpkg-reconfigure for interactive package configuration. This tutorial stays on the systemd path throughout. Prerequisites You will need a […]

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openSUSE Leap 15.5 — tinyproxy — multiple vulnerabilities (5 CVEs) — patch and remediation guide — diagnosis and fix on openSUSE Leap 15.5

openSUSE Leap 15.5 — tinyproxy — multiple vulnerabilities (5 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: openSUSE Leap 15.5 📖 ~4 min read  •  Source: SUSE advisory openSUSE-SU-2024:0119-1 (see also SUSE bugzilla) Related CVEs: CVE-2022-40468 CVE-2012-3505 CVE-2017-11747 CVE-2023-40533 CVE-2023-49606 Upstream summary: Potential leak of left-over heap data if custom error page templates containing special non-standard variables are used. […]

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AlmaLinux 9 — python-pip — vulnerability — patch and remediation guide — diagnosis and fix on AlmaLinux 9

AlmaLinux 9 — python-pip — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 9 📖 ~4 min read  •  Source: AlmaLinux ALSA ALSA-2023:6694 Related CVEs: CVE-2007-4559 Upstream summary: pip is a package management system used to install and manage software packages written in Python. Many packages can be found in the Python Package Index […]

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Oracle Linux 9 — glibc — bug fix update — issues resolved — diagnosis and fix on Oracle Linux 9

Oracle Linux 9 — glibc — bug fix update — issues resolved (ELSA-2025-20595)

🟡 Medium   ⏱ 5–30 min  Last verified: 2 September 2023 Affected versions: Oracle Linux 9 📖 ~4 min read  •  Source: ELSA advisory ELSA-2025-20595 Related CVEs: CVE-2025-8058 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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Amazon Linux 2023 — kernel-livepatch-6.1.34-59.116 — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Amazon Linux 2023

Amazon Linux 2023 — kernel-livepatch-6.1.34-59.116 — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Amazon Linux 2023 📖 ~4 min read  •  Source: Amazon Linux advisory ALAS2023LIVEPATCH-2023-012 Related CVEs: CVE-2023-3609 CVE-2023-3776 Upstream summary: A use-after-free vulnerability in the Linux kernel's net/sched: cls_u32 component can be exploited to achieve local privilege escalation. If tcf_change_indev() fails, u32_set_parms() will […]

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How to Configure firewalld Zones on CentOS Stream 9 — step-by-step CentOS Stream 9 tutorial on Progressive Robot

How to Configure firewalld Zones on CentOS Stream 9

Introduction CentOS Stream 9 ships with a stable, security-hardened base that makes deploying configure firewalld zones on centos stream 9 both straightforward and auditable. This tutorial covers the complete procedure for how to Configure firewalld Zones on CentOS Stream 9, including dnf module streams where applicable, systemd unit management, and the firewalld rules required for […]

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Common Problems 120025

Debian 12 SSH Public Key Authentication Denied

🟠 High   ⏱ 5–30 min  Last verified: 2 September 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 & […]

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