June 2021 - Page 17 of 66

Gentoo Linux — www-plugins/adobe-flash — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Gentoo Linux

Gentoo Linux — www-plugins/adobe-flash — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Gentoo Linux 📖 ~4 min read  •  Source: Gentoo GLSA GLSA-202006-09 Related CVEs: CVE-2020-9633 CVE-2020-3757 Upstream summary: An unspecified flaw has been discovered in Adobe Flash Player. Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step […]

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

Amazon Linux 2 — spice — multiple vulnerabilities (2 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 ALAS2-2020-1547 Related CVEs: CVE-2020-14355 CVE-2019-3813 Upstream summary: Multiple buffer overflow vulnerabilities were found in the QUIC image decoding process of the SPICE remote display system. Both the SPICE client (spice-gtk) […]

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Common Problems 117396

Ubuntu 20.04 LTS – apt lock prevents updates during maintenance windows – Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 19 May 2026 Affected versions: Ubuntu 20.04 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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openSUSE Tumbleweed — ruby2.7-rubygem-nokogiri — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — ruby2.7-rubygem-nokogiri — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE advisory openSUSE-SU-2025:14697-1 (see also SUSE bugzilla) Related CVEs: CVE-2021-41098 CVE-2019-5477 Upstream summary: Nokogiri is a Rubygem providing HTML, XML, SAX, and Reader parsers with XPath and CSS selector support. In Nokogiri v1.12.4 and […]

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Common Problems 114608

LVM Filesystem Full Despite Available Free Space In VG

🟡 Medium   ⏱ 5–30 min  Last verified: 20 May 2026 📖 ~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 & Cross-Refs References & Further […]

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FreeBSD 13 — mozjpeg — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — mozjpeg — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: mozjpeg — heap-based buffer over-read in get_rgb_row() in rdppm.c via a malformed PPM input file Related CVEs: CVE-2020-13790 Upstream summary: NIST reports: Heap-based buffer over-read in get_rgb_row() in rdppm.c via […]

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FreeBSD 13 — zabbix22-server — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — zabbix22-server — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: Zabbix — Remote code execution Related CVEs: CVE-2017-2824 Upstream summary: mitre reports: An exploitable code execution vulnerability exists in the trapper command functionality of Zabbix Server 2.4.X. A specially crafted […]

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How to Harden the FreeBSD Kernel with sysctl on FreeBSD 13 — step-by-step FreeBSD 13 tutorial on Progressive Robot

How to Harden the FreeBSD Kernel with sysctl on FreeBSD 13

Introduction FreeBSD 13 is a UNIX-derived operating system renowned for its network stack performance, ZFS integration, and Jail isolation primitives. Setting up harden the freebsd kernel with sysctl on freebsd 13 on FreeBSD 13 follows the rc.conf/service(8) paradigm rather than systemd, which means enabling a service and configuring its startup options are done differently from […]

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