Linux

Common Problems 119024

Ubuntu 14.04 LTS GRUB Rescue Prompt After Disk Changes

🟡 Medium   ⏱ 5–30 min  Last verified: 7 May 2022 📖 ~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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How to Install CockroachDB on CentOS Stream 9 — step-by-step CentOS Stream 9 tutorial on Progressive Robot

How to Install CockroachDB on CentOS Stream 9

Introduction How to Install CockroachDB on CentOS Stream 9 on CentOS Stream 9 provides administrators with a robust, enterprise-ready workflow that integrates cleanly with systemd, SELinux, firewalld, and the modern AppStream module system. In this tutorial we will walk through every step required, from package installation to verification, so that the resulting configuration is reproducible […]

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Debian 11 — firmware-nonfree — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — firmware-nonfree — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 7 May 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2016-0801 CVE-2017-0561 CVE-2017-13077 CVE-2017-13078 CVE-2017-13079 CVE-2017-13080 CVE-2017-13081 CVE-2017-9417  +12 more Upstream summary: The Broadcom Wi-Fi driver in the kernel in Android 4.x before 4.4.4, 5.x before 5.1.1 LMY49G, […]

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Debian 11 — ruby-image-processing — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — ruby-image-processing — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 7 May 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2022-24720 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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SLES 15 — ruby2.5-rubygem-loofah — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on SLES 15

SLES 15 — ruby2.5-rubygem-loofah — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 7 May 2022 Affected versions: SLES 15 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2023:1657-1 (see also SUSE bugzilla) Related CVEs: CVE-2022-23514 CVE-2022-23516 CVE-2022-23515 CVE-2019-15587 Upstream summary: Loofah is a general library for manipulating and transforming HTML/XML documents and fragments, built on top of Nokogiri. Loofah […]

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Common Problems 117071

Ubuntu 22.04 LTS – OOM killer terminates critical services under load – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 7 May 2022 Affected versions: Ubuntu 22.04 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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SLES 15 — python3-future — vulnerability — patch and remediation guide — diagnosis and fix on SLES 15

SLES 15 — python3-future — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 7 May 2022 Affected versions: SLES 15 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2023:0076-1 (see also SUSE bugzilla) Related CVEs: CVE-2022-40899 Upstream summary: An issue discovered in Python Charmers Future 0.18.2 and earlier allows remote attackers to cause a denial of service via crafted Set-Cookie […]

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SLES 15 — python3-setuptools — vulnerability — patch and remediation guide — diagnosis and fix on SLES 15

SLES 15 — python3-setuptools — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 7 May 2022 Affected versions: SLES 15 📖 ~4 min read  •  Source: SUSE advisory SUSE-CU-2023:169-1 (see also SUSE bugzilla) Related CVEs: CVE-2022-40897 Upstream summary: Python Packaging Authority (PyPA) setuptools before 65.5.1 allows remote attackers to cause a denial of service via HTML in a crafted package […]

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How To Use PostgreSQL with Your Ruby on Rails Application on Ubuntu 18.04 — step-by-step Linux tutorial on Progressive Robot

How To Use PostgreSQL with Your Ruby on Rails Application on Ubuntu 18.04

A PostgreSQL database is a robust and flexible choice for your Ruby on Rails application. In this tutorial, you will set up a Ruby on Rails development environment connected to a PostgreSQL database on an Ubuntu 18.04 server. You will install and configure PostgreSQL, and then test your setup by creating a Rails application that uses PostgreSQL as its database server.

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Debian 10 — openssl — multiple vulnerabilities (9 CVEs) — patch and remediation guide — diagnosis and fix on Debian 10

Debian 10 — openssl — multiple vulnerabilities (9 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 7 May 2022 Affected versions: Debian 10 (buster) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2019-1547 CVE-2019-1551 CVE-2020-1967 CVE-2020-1971 CVE-2021-3449 CVE-2021-3711 CVE-2021-4160 CVE-2022-1292  +1 more Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – […]

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