October 2025 - Page 40 of 114

Debian 13 — pcre2 — multiple vulnerabilities (8 CVEs) — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — pcre2 — multiple vulnerabilities (8 CVEs) — patch and remediation guide

  • October 21, 2025
  • Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 21 October 2025 Affected versions: Debian 13 (trixie) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2016-3191 CVE-2017-7186 CVE-2017-8786 CVE-2019-20454 CVE-2022-1586 CVE-2022-1587 CVE-2022-41409 CVE-2025-58050 Upstream summary: The compile_branch function in pcre_compile.c in PCRE 8.x before 8.39 and pcre2_compile.c in PCRE2 before 10.22 mishandles patterns […]

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Ubuntu 22.04 — python-apt — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 22.04

Ubuntu 22.04 — python-apt — vulnerability — patch and remediation guide

  • October 21, 2025
  • Linux
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🟢 Low   ⏱ 5–15 min  Last verified: 21 October 2025 Affected versions: Ubuntu 22.04 (jammy) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-7916-1 Related CVEs: CVE-2025-6966 Upstream summary: Julian Andres Klode discovered that python-apt incorrectly handled deb822 configuration files. An attacker could use this issue to cause python-apt to crash, resulting in […]

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Alpine Linux 3.20 — gtk-vnc — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Alpine Linux 3.20

Alpine Linux 3.20 — gtk-vnc — multiple vulnerabilities (2 CVEs) — patch and remediation guide

  • October 21, 2025
  • Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Alpine Linux 3.20 / fixed in 0.7.0-r0 📖 ~4 min read  •  Source: Alpine secdb entry — gtk-vnc 0.7.0-r0 Related CVEs: CVE-2017-5884 CVE-2017-5885 Upstream summary: Alpine community repository for vv3.20 ships gtk-vnc 0.7.0-r0 which addresses CVE-2017-5884. Table of contents Symptom & Impact […]

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Oracle Linux 10 — freerdp — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 10

Oracle Linux 10 — freerdp — vulnerability — patch and remediation guide (ELSA-2025-9307)

  • October 21, 2025
  • Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 21 October 2025 Affected versions: Oracle Linux 10 📖 ~4 min read  •  Source: ELSA advisory ELSA-2025-9307 Related CVEs: CVE-2025-4478 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 Configure Automatic Kernel Hardening with Hardening.io on Debian 13 — step-by-step Debian 13 tutorial on Progressive Robot

How to Configure Automatic Kernel Hardening with Hardening.io on Debian 13

  • October 21, 2025
  • Linux
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Introduction This guide explains how to Configure Automatic Kernel Hardening with Hardening.io 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 […]

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How to Set Up an SFTP-Only User on RHEL 10 — step-by-step RHEL 10 tutorial on Progressive Robot

How to Set Up an SFTP-Only User on RHEL 10

  • October 21, 2025
  • Linux
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Introduction RHEL 10 ships with a stable, security-hardened base that makes deploying set up an sftp-only user both straightforward and auditable. This tutorial covers the complete procedure for how to Set Up an SFTP-Only User on RHEL 10, including dnf module streams where applicable, systemd unit management, and the firewalld rules required for network-facing services. […]

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Common Problems 116433

Ubuntu 24.04 LTS – unattended-upgrades causes sustained high CPU and I/O

  • October 21, 2025
  • Linux
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🟡 Medium   ⏱ 5–30 min  Last verified: 21 October 2025 Affected versions: Ubuntu 24.04 LTS Ubuntu 24.04 Ubuntu 24.04.1 📖 ~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 […]

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Oracle Linux 9 — redis — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 9

Oracle Linux 9 — redis — vulnerability — patch and remediation guide (ELSA-2025-20655)

  • October 21, 2025
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 21 October 2025 Affected versions: Oracle Linux 9 📖 ~4 min read  •  Source: ELSA advisory ELSA-2025-20655 Related CVEs: CVE-2025-49844 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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Windows Server 2016 — KB5050180 — security update — patch and remediation guide — diagnosis and fix on Windows Server 2016

Windows Server 2016 — KB5050180 — security update — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Windows Server 2016 📖 ~4 min read  •  Source: Microsoft KB5050180 • MSRC update-guide entry Related CVEs: CVE-2025-21176 Affected components: Microsoft .NET Framework 3.5 AND 4.7.2 on Windows Server 2016 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis […]

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Oracle Linux 9 — vsftpd — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 9

Oracle Linux 9 — vsftpd — vulnerability — patch and remediation guide (ELSA-2026-0605)

  • October 21, 2025
  • Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 21 October 2025 Affected versions: Oracle Linux 9 📖 ~4 min read  •  Source: ELSA advisory ELSA-2026-0605 Related CVEs: CVE-2025-14242 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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