Linux

Debian 11 — ibm-3270 — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — ibm-3270 — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 5 November 2021 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2012-5662 Upstream summary: x3270 before 3.3.12ga12 does not verify that the server hostname matches a domain name in the subject's Common Name (CN) or subjectAltName field of the […]

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AlmaLinux 8 — qpdf — vulnerability — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — qpdf — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read  •  Source: AlmaLinux ALSA ALBA-2019:3507 Upstream summary: For detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section. Table of contents Symptom & Impact Environment & Reproduction Root Cause […]

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Oracle Linux 8 — Graphical Installation Program Fails to Produce Error When an Unacceptable Kdump Value Is Entered — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — Graphical Installation Program Fails to Produce Error When an Unacceptable Kdump Value Is Entered

🟠 High   ⏱ 5–30 min  Last verified: 4 November 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: Oracle Bug 31133351 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 […]

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Alpine Linux edge — py3-httplib2 — vulnerability — patch and remediation guide — diagnosis and fix on Alpine Linux edge

Alpine Linux edge — py3-httplib2 — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Alpine Linux edge / fixed in 0.19.0-r0 📖 ~4 min read  •  Source: Alpine secdb entry — py3-httplib2 0.19.0-r0 Related CVEs: CVE-2021-21240 Upstream summary: Alpine community repository for vedge ships py3-httplib2 0.19.0-r0 which addresses CVE-2021-21240. Table of contents Symptom & Impact Environment […]

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Debian 11 — allegro4.4 — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — allegro4.4 — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 4 November 2021 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2021-36489 Upstream summary: Buffer Overflow vulnerability in Allegro through 5.2.6 allows attackers to cause a denial of service via crafted PCX/TGA/BMP files to allegro_image addon. Table of contents […]

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Debian 11 — tinc — multiple vulnerabilities (6 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

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

🟡 Medium   ⏱ 10–30 min  Last verified: 4 November 2021 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2001-1505 CVE-2002-1755 CVE-2013-1428 CVE-2018-16737 CVE-2018-16738 CVE-2018-16758 Upstream summary: tinc 1.0pre3 and 1.0pre4 allows remote attackers to inject data into user sessions by sniffing and replaying packets. Table of […]

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Arch Linux — mariadb — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Arch Linux

Arch Linux — mariadb — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Arch Linux (rolling release) 📖 ~4 min read  •  Source: Arch ASA ASA-202105-14 Related CVEs: CVE-2021-2166 CVE-2021-2154 Upstream summary: Type: denial of service. Status: Fixed. Affected: 10.5.9-1. Fixed in: 10.5.10-1. Group: AVG-1882. Table of contents Symptom & Impact Environment & Reproduction Root […]

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How to Install Symfony on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Install Symfony on RHEL 8

Symfony is a mature, enterprise-grade PHP framework and a collection of reusable components that power many of the world’s largest PHP applications, including Drupal and parts of Laravel itself. It emphasises strict standards, comprehensive testing support, and long-term support releases that align well with RHEL 8’s stability-first philosophy. This tutorial covers installing the Symfony CLI […]

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Debian 11 — miller — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — miller — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 4 November 2021 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2020-15167 Upstream summary: In Miller (command line utility) using the configuration file support introduced in version 5.9.0, it is possible for an attacker to cause Miller to run […]

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