Linux

Oracle Linux 8 — kernel — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — kernel — vulnerability — patch and remediation guide (ELSA-2025-22801)

🟡 Medium   ⏱ 10–30 min  Last verified: 9 December 2023 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2025-22801 Related CVEs: CVE-2022-50543 CVE-2023-53401 CVE-2023-53539 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification […]

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How to Install and Configure BIND9 DNS Server on Debian 12 — step-by-step Debian 12 tutorial on Progressive Robot

How to Install and Configure BIND9 DNS Server on Debian 12

Introduction How to Install and Configure BIND9 DNS Server on Debian 12 is a fundamental operation for any administrator maintaining a Debian 12 Bookworm server. Debian 12 Bookworm ships with the Linux 6.12 kernel, updated toolchains, and a fully refreshed package archive — meaning version numbers, configuration file paths, and some dependency chains differ from […]

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Alpine Linux 3.18 — optipng — vulnerability — patch and remediation guide — diagnosis and fix on Alpine Linux 3.18

Alpine Linux 3.18 — optipng — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Alpine Linux 3.18 / fixed in 0.7.8-r0 📖 ~4 min read  •  Source: Alpine secdb entry — optipng 0.7.8-r0 Related CVEs: CVE-2023-43907 Upstream summary: Alpine community repository for vv3.18 ships optipng 0.7.8-r0 which addresses CVE-2023-43907. Table of contents Symptom & Impact Environment […]

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

Oracle Linux 9 — libwebp — vulnerability — patch and remediation guide (ELSA-2023-5214)

🟠 High   ⏱ 15–60 min  Last verified: 9 December 2023 Affected versions: Oracle Linux 9 📖 ~4 min read  •  Source: ELSA advisory ELSA-2023-5214 Related CVEs: CVE-2023-4863 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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openSUSE Leap 15.5 — squashfs — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on openSUSE Leap 15.5

openSUSE Leap 15.5 — squashfs — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: openSUSE Leap 15.5 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2023:4424-1 (see also SUSE bugzilla) Related CVEs: CVE-2015-4645 CVE-2015-4646 CVE-2021-40153 CVE-2021-41072 Upstream summary: Integer overflow in the read_fragment_table_4 function in unsquash-4.c in Squashfs and sasquatch allows remote attackers to cause a […]

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How to Configure Gitea Self-Hosted Git Service on Debian 12 — step-by-step Debian 12 tutorial on Progressive Robot

How to Configure Gitea Self-Hosted Git Service on Debian 12

Introduction How to Configure Gitea Self-Hosted Git Service on Debian 12 is a fundamental operation for any administrator maintaining a Debian 12 Bookworm server. Debian 12 Bookworm ships with the Linux 6.12 kernel, updated toolchains, and a fully refreshed package archive — meaning version numbers, configuration file paths, and some dependency chains differ from Debian […]

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Common Problems 120081

Debian 12 – mdadm RAID Degraded and Rebuild Stalled – Safe Recovery

🟠 High   ⏱ 5–30 min  Last verified: 9 December 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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Debian 12 — libtomcrypt — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — libtomcrypt — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 8 December 2023 Affected versions: Debian 12 (bookworm) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2016-6129 CVE-2018-0739 CVE-2018-12437 CVE-2019-17362 Upstream summary: The rsa_verify_hash_ex function in rsa_verify_hash.c in LibTomCrypt, as used in OP-TEE before 2.2.0, does not validate that the message length is equal […]

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Alpine Linux edge — optipng — vulnerability — patch and remediation guide — diagnosis and fix on Alpine Linux edge

Alpine Linux edge — optipng — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Alpine Linux edge / fixed in 0.7.8-r0 📖 ~4 min read  •  Source: Alpine secdb entry — optipng 0.7.8-r0 Related CVEs: CVE-2023-43907 Upstream summary: Alpine community repository for vedge ships optipng 0.7.8-r0 which addresses CVE-2023-43907. Table of contents Symptom & Impact Environment […]

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Amazon Linux 2 — wpa_supplicant — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on Amazon Linux 2

Amazon Linux 2 — wpa_supplicant — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Amazon Linux 2 📖 ~4 min read  •  Source: Amazon Linux advisory ALAS2-2021-1624 Related CVEs: CVE-2021-27803 CVE-2023-52160 CVE-2021-0326 CVE-2018-14526 Upstream summary: A flaw was found in the wpa_supplicant, in the way it processes P2P (Wi-Fi Direct) provision discovery requests. This flaw allows […]

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