Linux

AlmaLinux 8 — vulkan-tools — vulnerability — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — vulkan-tools — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read  •  Source: AlmaLinux ALSA ALEA-2022:1962 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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Ubuntu 18.04 — nvidia-graphics-drivers-515-server — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — nvidia-graphics-drivers-515-server — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 11 April 2022 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5547-1 Related CVEs: CVE-2022-31607 CVE-2022-31608 CVE-2022-31615 Upstream summary: Le Wu discovered that the NVIDIA graphics drivers did not properly perform input validation in some situations. A local user could use […]

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Ubuntu 20.04 — jqueryui — multiple vulnerabilities (5 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — jqueryui — multiple vulnerabilities (5 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 11 April 2022 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-6419-1 Related CVEs: CVE-2016-7103 CVE-2021-41182 CVE-2021-41183 CVE-2021-41184 CVE-2022-31160 Upstream summary: Hong Phat Ly discovered that jQuery UI did not properly manage parameters from untrusted sources, which could lead to arbitrary […]

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Ubuntu 16.04 — libzstd — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

Ubuntu 16.04 — libzstd — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 11 April 2022 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5720-1 Related CVEs: CVE-2021-24031 CVE-2021-24032 CVE-2019-11922 Upstream summary: It was discovered that Zstandard was not properly managing file permissions when generating output files. A local attacker could possibly use this […]

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

Oracle Linux 8 — kubernetes — vulnerability — patch and remediation guide (ELSA-2022-9854)

🟠 High   ⏱ 15–60 min  Last verified: 11 April 2022 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2022-9854 Related CVEs: CVE-2022-3172 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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How to Install Terraform on Debian 11 — step-by-step Debian 11 tutorial on Progressive Robot

How to Install Terraform on Debian 11

Introduction How to Install Terraform on Debian 11 is a fundamental operation for any administrator maintaining a Debian 11 Bullseye server. Debian 11 Bullseye 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 11. This tutorial […]

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CentOS Stream 9 — pesign — vulnerability — patch and remediation guide — diagnosis and fix on CentOS Stream 9

CentOS Stream 9 — pesign — vulnerability — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 11 April 2022 Affected versions: CentOS Stream 9 📖 ~4 min read  •  Source: AlmaLinux/RHEL advisory ALSA-2023:1067 Related CVEs: CVE-2022-3560 Upstream summary: The pesign packages provide the pesign utility for signing UEFI binaries as well as other associated tools. Security Fix(es): * pesign: Local privilege escalation on […]

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Alpine Linux edge — heimdal — multiple vulnerabilities (11 CVEs) — patch and remediation guide — diagnosis and fix on Alpine Linux edge

Alpine Linux edge — heimdal — multiple vulnerabilities (11 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Alpine Linux edge / fixed in 7.8.0-r2 📖 ~4 min read  •  Source: Alpine secdb entry — heimdal 7.8.0-r2 Related CVEs: CVE-2022-45142 CVE-2019-14870 CVE-2021-3671 CVE-2021-44758 CVE-2022-3437 CVE-2022-41916 CVE-2022-42898 CVE-2022-44640  +3 more Upstream summary: Alpine main repository for vedge ships heimdal 7.8.0-r2 which […]

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Common Problems 120471

Debian 11 – NO_PUBKEY and Repository Signature Failures – apt Trust Repair

🟠 High   ⏱ 5–30 min  Last verified: 11 April 2022 Affected versions: Debian 11 📖 ~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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How to Install and Configure Traefik Reverse Proxy on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Install and Configure Traefik Reverse Proxy on RHEL 8

Traefik is a modern cloud-native reverse proxy and load balancer that can automatically discover services, obtain and renew TLS certificates via Let’s Encrypt, and expose a real-time dashboard — all without restarting when configuration changes. Unlike Nginx or HAProxy, Traefik reads its routing rules from provider backends such as Docker labels, Kubernetes annotations, or plain […]

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