Linux

Arch Linux — jasper — multiple vulnerabilities (17 CVEs) — patch and remediation guide — diagnosis and fix on Arch Linux

Arch Linux — jasper — multiple vulnerabilities (17 CVEs) — patch and remediation guide

  • May 9, 2020
  • Linux
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🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: Arch Linux (rolling release) 📖 ~4 min read  •  Source: Arch ASA ASA-201612-9 Related CVEs: CVE-2016-9560 CVE-2016-9557 CVE-2016-9388 CVE-2016-9387 CVE-2016-9262 CVE-2016-8887 CVE-2016-8885 CVE-2016-8884  +9 more Upstream summary: Type: multiple issues. Status: Fixed. Affected: 1.900.1-15. Fixed in: 1.900.31-1. Group: AVG-14. Table of contents […]

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

Oracle Linux 8 — rsync — vulnerability — patch and remediation guide (ELSA-2025-8395)

  • May 9, 2020
  • Linux
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🟢 Low   ⏱ 5–15 min  Last verified: 9 May 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2025-8395 Related CVEs: CVE-2016-9840 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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Common Problems 121154

Debian 10: CIFS mount authentication fails with special-character credentials

  • May 8, 2020
  • Linux
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🟡 Medium   ⏱ 5–30 min  Last verified: 8 May 2020 Affected versions: Debian 10 📖 ~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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Common Problems 118126

Ubuntu 18.04 LTS – rsyslog forwarding stops after remote TLS policy update – Fix & Prevention

  • May 8, 2020
  • Linux
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🟠 High   ⏱ 5–30 min  Last verified: 8 May 2020 Affected versions: Ubuntu 18.04 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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Common Problems 117628

Ubuntu 20.04 LTS – certbot renewal fails because port 80 is in use

  • May 8, 2020
  • Linux
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🟠 High   ⏱ 5–30 min  Last verified: 8 May 2020 Affected versions: Ubuntu 20.04 LTS Ubuntu 20.04 Ubuntu 20.04.6 📖 ~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 […]

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How to Install Memcached on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Install Memcached on Debian 9

  • May 8, 2020
  • Linux
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Introduction How to Install Memcached on Debian 9 is a fundamental operation for any administrator maintaining a Debian 9 Stretch server. Debian 9 Stretch 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 9. This tutorial […]

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Gentoo Linux — media-libs/libde265 — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Gentoo Linux

Gentoo Linux — media-libs/libde265 — multiple vulnerabilities (20 CVEs) — patch and remediation guide

  • May 8, 2020
  • Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Gentoo Linux 📖 ~4 min read  •  Source: Gentoo GLSA GLSA-202408-20 Related CVEs: CVE-2020-21594 CVE-2020-21595 CVE-2020-21596 CVE-2020-21597 CVE-2020-21598 CVE-2020-21599 CVE-2020-21600 CVE-2020-21601  +12 more Upstream summary: Multiple vulnerabilities have been discovered in libde265. Please review the CVE identifiers referenced below for details. Table […]

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How to Set Up borgbackup on Debian 10 — step-by-step Debian 10 tutorial on Progressive Robot

How to Set Up borgbackup on Debian 10

  • May 8, 2020
  • Linux
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Introduction How to Set Up borgbackup on Debian 10 is a fundamental operation for any administrator maintaining a Debian 10 Buster server. Debian 10 Buster 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 10. This […]

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How To Configure Periodic TRIM for SSD Storage on Linux Servers — step-by-step Linux tutorial on Progressive Robot

How To Configure Periodic TRIM for SSD Storage on Linux Servers

  • May 8, 2020
  • Linux
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Continuous use of SSDs results in degraded performance if not accounted for and mitigated. The TRIM command is an operation that allows the operating system to propagate information down to the SSD about which blocks of data are no longer in use. This allows the SSD’s internal systems to better manage wear leveling and prepare the device for future writes. Continuous TRIM is possible, but can negatively impact performance. Scheduled, periodic TRIM is a good alternative in most cases.

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