Linux

AlmaLinux 8 — aopalliance — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — aopalliance — multiple vulnerabilities (4 CVEs) — patch and remediation guide

  • August 31, 2025
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read  •  Source: AlmaLinux ALSA ALSA-2025:9318 Related CVEs: CVE-2019-10086 CVE-2025-48734 CVE-2022-29599 CVE-2020-13956 Upstream summary: The javapackages-tools packages provide macros and scripts to support Java packaging. Security Fix(es): * apache-commons-beanutils: does not suppresses the class property in PropertyUtilsBean […]

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

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

  • August 31, 2025
  • Linux
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🟢 Low   ⏱ 5–15 min  Last verified: 31 August 2025 Affected versions: Debian 13 (trixie) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2005-0390 CVE-2020-13614 Upstream summary: Buffer overflow in the HTTP redirection capability in conn.c for Axel before 1.0b may allow remote attackers to execute arbitrary code. Table of contents […]

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Common Problems 119566

Debian 13 Swap Misconfiguration Causes OOM Kills

  • August 31, 2025
  • Linux
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🟡 Medium   ⏱ 5–30 min  Last verified: 31 August 2025 📖 ~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 Java OpenJDK 17 on Debian 13 — step-by-step Debian 13 tutorial on Progressive Robot

How to Install Java OpenJDK 17 on Debian 13

  • August 31, 2025
  • Linux
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Introduction This guide explains how to Install Java OpenJDK 17 on Debian 13 on Debian 13 Trixie. Debian Trixie uses systemd for service management, nftables as the underlying packet filter (with ufw or iptables front-ends still available), and AppArmor for mandatory access control. Every command is designed for a minimal Debian 13 install with the […]

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Debian 13 — ruby-kaminari — vulnerability — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — ruby-kaminari — vulnerability — patch and remediation guide

  • August 31, 2025
  • Linux
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🟢 Low   ⏱ 5–15 min  Last verified: 31 August 2025 Affected versions: Debian 13 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2020-11082 Upstream summary: In Kaminari before 1.2.1, there is a vulnerability that would allow an attacker to inject arbitrary code into pages with pagination links. This has been fixed […]

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Alpine Linux 3.20 — bluez — vulnerability — patch and remediation guide — diagnosis and fix on Alpine Linux 3.20

Alpine Linux 3.20 — bluez — vulnerability — patch and remediation guide

  • August 31, 2025
  • Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Alpine Linux 3.20 / fixed in 5.54-r0 📖 ~4 min read  •  Source: Alpine secdb entry — bluez 5.54-r0 Related CVEs: CVE-2020-0556 Upstream summary: Alpine main repository for vv3.20 ships bluez 5.54-r0 which addresses CVE-2020-0556. Table of contents Symptom & Impact Environment […]

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Oracle Linux 9 — python-setuptools — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 9

Oracle Linux 9 — python-setuptools — vulnerability — patch and remediation guide (ELSA-2025-10407)

  • August 31, 2025
  • Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 31 August 2025 Affected versions: Oracle Linux 9 📖 ~4 min read  •  Source: ELSA advisory ELSA-2025-10407 Related CVEs: CVE-2025-47273 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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openSUSE Tumbleweed — matrix-synapse — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — matrix-synapse — multiple vulnerabilities (20 CVEs) — patch and remediation guide

  • August 31, 2025
  • Linux
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🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE security advisory (see also SUSE bugzilla) Related CVEs: CVE-2024-37302 CVE-2024-37303 CVE-2024-52805 CVE-2024-52815 CVE-2024-53863 CVE-2024-53867 CVE-2025-49090 CVE-2025-30355  +12 more Upstream summary: Synapse is an open-source Matrix homeserver. Synapse versions before 1.106 are vulnerable to […]

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Common Problems 116537

Ubuntu 24.04 LTS – tracker-miner-fs causes high CPU usage – Fix & Prevention

  • August 31, 2025
  • Linux
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🟡 Medium   ⏱ 5–30 min  Last verified: 31 August 2025 Affected versions: Ubuntu 24.04 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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Oracle Linux 10 — corosync — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 10

Oracle Linux 10 — corosync — vulnerability — patch and remediation guide (ELSA-2025-7478)

  • August 31, 2025
  • Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 31 August 2025 Affected versions: Oracle Linux 10 📖 ~4 min read  •  Source: ELSA advisory ELSA-2025-7478 Related CVEs: CVE-2025-30472 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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