Linux

How to Configure Kubernetes RBAC on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Configure Kubernetes RBAC on RHEL 7

How to Configure Kubernetes RBAC on RHEL 7 Role-Based Access Control (RBAC) is the standard authorization mechanism in Kubernetes, allowing administrators to define precisely which users, groups, and service accounts can perform which actions on which resources. Without RBAC, any authenticated user could potentially read secrets, delete deployments, or escalate their privileges across namespaces. On […]

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Oracle Linux 8 — libstorage package conflict causes dnf groupinstall command to fail — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — libstorage package conflict causes dnf groupinstall command to fail

🟠 High   ⏱ 5–30 min  Last verified: 12 June 2022 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: Oracle Bug 30882591 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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Debian 11 — php-xajax — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — php-xajax — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 12 June 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2007-2739 CVE-2007-2740 Upstream summary: Cross-site scripting (XSS) vulnerability in xajax before 0.2.5 allows remote attackers to inject arbitrary web script or HTML via unspecified vectors. Table of contents […]

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Common Problems 120595

Debian 11 Disk Full in /var Causes Service Outages

🔴 Critical   ⏱ 5–30 min  Last verified: 12 June 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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Debian 11 — gedit — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — gedit — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 12 June 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2005-1686 CVE-2009-0314 CVE-2017-14108 Upstream summary: Format string vulnerability in gedit 2.10.2 may allow attackers to cause a denial of service (application crash) via a bin file with format […]

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Debian 11 — manila-ui — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — manila-ui — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 12 June 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2016-6519 Upstream summary: Cross-site scripting (XSS) vulnerability in the "Shares" overview in Openstack Manila before 2.5.1 allows remote authenticated users to inject arbitrary web script or HTML via […]

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Alpine Linux edge — e2guardian — vulnerability — patch and remediation guide — diagnosis and fix on Alpine Linux edge

Alpine Linux edge — e2guardian — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Alpine Linux edge / fixed in 5.4.5r-r0 📖 ~4 min read  •  Source: Alpine secdb entry — e2guardian 5.4.5r-r0 Related CVEs: CVE-2021-44273 Upstream summary: Alpine community repository for vedge ships e2guardian 5.4.5r-r0 which addresses CVE-2021-44273. Table of contents Symptom & Impact Environment […]

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Debian 11 — gcab — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — gcab — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 12 June 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2015-0552 CVE-2018-5345 Upstream summary: Directory traversal vulnerability in the gcab_folder_extract function in libgcab/gcab-folder.c in gcab 0.4 allows remote attackers to write to arbitrary files via crafted path in […]

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Common Problems 117114

Ubuntu 22.04 LTS Snap App Cannot Access Removable Media

🟡 Medium   ⏱ 5–30 min  Last verified: 12 June 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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Ubuntu 22.04 — ca-certificates — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 22.04

Ubuntu 22.04 — ca-certificates — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 12 June 2022 Affected versions: Ubuntu 22.04 (jammy) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-7034-1 Related CVEs: https://launchpad.net/bugs/2081875 https://launchpad.net/bugs/2020089 https://launchpad.net/bugs/1998785 Upstream summary: The ca-certificates package contained outdated CA certificates. This update refreshes the included certificates to those contained in the 2.64 version of the […]

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