Linux

Oracle Linux 9 — Unbreakable Enterprise kernel — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 9

Oracle Linux 9 — Unbreakable Enterprise kernel — vulnerability — patch and remediation guide (ELSA-2026-50006)

  • January 8, 2026
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 8 January 2026 Affected versions: Oracle Linux 9 📖 ~4 min read  •  Source: ELSA advisory ELSA-2026-50006 Related CVEs: CVE-2025-22121 CVE-2025-23129 CVE-2025-37860 CVE-2025-38643 CVE-2025-38678 CVE-2025-39981 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]

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Debian 13 — libyaml — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — libyaml — multiple vulnerabilities (3 CVEs) — patch and remediation guide

  • January 7, 2026
  • Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 7 January 2026 Affected versions: Debian 13 (trixie) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2013-6393 CVE-2014-2525 CVE-2014-9130 Upstream summary: The yaml_parser_scan_tag_uri function in scanner.c in LibYAML before 0.1.5 performs an incorrect cast, which allows remote attackers to cause a denial of service […]

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

Debian 13 — sketch — vulnerability — patch and remediation guide

  • January 7, 2026
  • Linux
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🟢 Low   ⏱ 5–15 min  Last verified: 7 January 2026 Affected versions: Debian 13 (trixie) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2002-2047 Upstream summary: The file preview functionality in Sketch 0.6.12 and earlier allows remote attackers to execute arbitrary commands via shell metacharacters in the filename of an encapsulated […]

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Debian 12 — nbdkit — multiple vulnerabilities (5 CVEs) — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — nbdkit — multiple vulnerabilities (5 CVEs) — patch and remediation guide

  • January 7, 2026
  • Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 7 January 2026 Affected versions: Debian 12 (bookworm) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2019-14850 CVE-2019-14851 CVE-2021-3716 CVE-2025-47711 CVE-2025-47712 Upstream summary: A denial of service vulnerability was discovered in nbdkit 1.12.7, 1.14.1 and 1.15.1. An attacker could connect to the nbdkit service […]

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Debian 13 — rdesktop — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — rdesktop — multiple vulnerabilities (20 CVEs) — patch and remediation guide

  • January 7, 2026
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 7 January 2026 Affected versions: Debian 13 (trixie) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2008-1801 CVE-2008-1802 CVE-2008-1803 CVE-2011-1595 CVE-2018-20174 CVE-2018-20175 CVE-2018-20176 CVE-2018-20177  +12 more Upstream summary: Integer underflow in the iso_recv_msg function (iso.c) in rdesktop 1.5.0 allows remote attackers to cause a […]

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Debian 13 — db5.3 — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — db5.3 — multiple vulnerabilities (2 CVEs) — patch and remediation guide

  • January 7, 2026
  • Linux
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🟢 Low   ⏱ 5–15 min  Last verified: 7 January 2026 Affected versions: Debian 13 (trixie) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2017-10140 CVE-2019-8457 Upstream summary: Postfix before 2.11.10, 3.0.x before 3.0.10, 3.1.x before 3.1.6, and 3.2.x before 3.2.2 might allow local users to gain privileges by leveraging undocumented functionality […]

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Debian 11 — mongo-c-driver — multiple vulnerabilities (12 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — mongo-c-driver — multiple vulnerabilities (12 CVEs) — patch and remediation guide

  • January 7, 2026
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 7 January 2026 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2018-16790 CVE-2021-32050 CVE-2023-0437 CVE-2024-6381 CVE-2024-6383 CVE-2025-0755 CVE-2025-12119 CVE-2025-14911  +4 more Upstream summary: _bson_iter_next_internal in bson-iter.c in libbson 1.12.0, as used in MongoDB mongo-c-driver and other products, has a […]

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Debian 13 — ublock-origin — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — ublock-origin — multiple vulnerabilities (3 CVEs) — patch and remediation guide

  • January 7, 2026
  • Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 7 January 2026 Affected versions: Debian 13 (trixie) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2021-36773 CVE-2022-32308 CVE-2025-4215 Upstream summary: uBlock Origin before 1.36.2 and nMatrix before 4.4.9 support an arbitrary depth of parameter nesting for strict blocking, which allows crafted web sites […]

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How to Install Nagios Core on RHEL 10 — step-by-step RHEL 10 tutorial on Progressive Robot

How to Install Nagios Core on RHEL 10

  • January 7, 2026
  • Linux
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Introduction How to Install Nagios Core on RHEL 10 on RHEL 10 provides administrators with a robust, enterprise-ready workflow that integrates cleanly with systemd, SELinux, firewalld, and the modern AppStream module system. In this tutorial we will walk through every step required, from package installation to verification, so that the resulting configuration is reproducible and […]

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Ubuntu 18.04 — radare2 — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — radare2 — multiple vulnerabilities (3 CVEs) — patch and remediation guide

  • January 7, 2026
  • Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 7 January 2026 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-7915-1 Related CVEs: CVE-2025-60361 CVE-2025-60360 CVE-2025-60359 Upstream summary: It was discovered that Radare2 contained several memory leaks. An attacker could possibly use these issues to cause a denial of service. […]

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