Linux

Common Problems 127143

CentOS Stream 10 – Common Problem 193 – Diagnosis and Fix

🟢 Low   ⏱ 5–30 min  Last verified: 28 October 2025 Affected versions: CentOS Stream 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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How to Set Up a DHCP Server with ISC DHCP on RHEL 9 — step-by-step RHEL 9 tutorial on Progressive Robot

How to Set Up a DHCP Server with ISC DHCP on RHEL 9

ISC DHCP (Internet Systems Consortium DHCP Server) is the most widely deployed open-source DHCP implementation and provides flexible IP address management for networks of any size. On RHEL 9, the dhcp-server package provides dhcpd, which handles both dynamic leases and static address reservations from a single configuration file. Although ISC announced the end-of-life of ISC […]

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Common Problems 114041

RHEL 10 – journald persistent logs consume excessive disk space – Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 28 October 2025 Affected versions: RHEL 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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Debian 13 — tcptraceroute — vulnerability — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — tcptraceroute — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 28 October 2025 Affected versions: Debian 13 (trixie) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2003-0489 Upstream summary: tcptraceroute 1.4 and earlier does not fully drop privileges after obtaining a file descriptor for capturing packets, which may allow local users to gain access […]

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Debian 13 — libapache2-mod-perl2 — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — libapache2-mod-perl2 — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 28 October 2025 Affected versions: Debian 13 (trixie) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2007-1349 CVE-2009-0796 CVE-2011-2767 Upstream summary: PerlRun.pm in Apache mod_perl before 1.30, and RegistryCooker.pm in mod_perl 2.x, does not properly escape PATH_INFO before use in a regular expression, which […]

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AlmaLinux 9 — opentelemetry-collector — multiple vulnerabilities (6 CVEs) — patch and remediation guide — diagnosis and fix on AlmaLinux 9

AlmaLinux 9 — opentelemetry-collector — multiple vulnerabilities (6 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 9 📖 ~4 min read  •  Source: AlmaLinux ALSA ALSA-2026:4177 Related CVEs: CVE-2025-61726 CVE-2025-68121 CVE-2025-61729 CVE-2025-68156 CVE-2025-4673 CVE-2025-22871 Upstream summary: Collector with the supported components for a AlmaLinux build of OpenTelemetry Security Fix(es): * golang: net/url: Memory exhaustion in query parameter […]

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Common Problems 124141

Oracle Linux 10 – fapolicyd blocks execution of trusted in-house binary – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 28 October 2025 Affected versions: Oracle Linux 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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Debian 13 — hylafax — multiple vulnerabilities (11 CVEs) — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — hylafax — multiple vulnerabilities (11 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 28 October 2025 Affected versions: Debian 13 (trixie) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2001-1034 CVE-2002-1049 CVE-2002-1050 CVE-2003-0886 CVE-2004-1182 CVE-2005-3069 CVE-2005-3070 CVE-2005-3538  +3 more Upstream summary: Format string vulnerability in Hylafax on FreeBSD allows local users to execute arbitrary code via format […]

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Debian 13 — librelp — vulnerability — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — librelp — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 28 October 2025 Affected versions: Debian 13 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2018-1000140 Upstream summary: rsyslog librelp version 1.2.14 and earlier contains a Buffer Overflow vulnerability in the checking of x509 certificates from a peer that can result in Remote code […]

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Debian 13 — timg — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — timg — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 28 October 2025 Affected versions: Debian 13 (trixie) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2022-43151 CVE-2023-40968 Upstream summary: timg v1.4.4 was discovered to contain a memory leak via the function timg::QueryBackgroundColor() at /timg/src/term-query.cc. Table of contents Symptom & Impact Environment & Reproduction […]

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