Security Hardening

Amazon Linux 2 — kernel-livepatch-5.10.179-171.711 — multiple vulnerabilities (5 CVEs) — patch and remediation guide — diagnosis and fix on Amazon Linux 2

Amazon Linux 2 — kernel-livepatch-5.10.179-171.711 — multiple vulnerabilities (5 CVEs) — patch and remediation guide

  • May 25, 2026
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Amazon Linux 2 📖 ~4 min read  •  Source: Amazon Linux advisory ALAS2LIVEPATCH-2023-144 Related CVEs: CVE-2023-3609 CVE-2023-3776 CVE-2023-2156 CVE-2023-3090 CVE-2023-35788 Upstream summary: A use-after-free vulnerability in the Linux kernel's net/sched: cls_u32 component can be exploited to achieve local privilege escalation. If tcf_change_indev() […]

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Gentoo Linux — dev-embedded/u-boot-tools — vulnerability — patch and remediation guide — diagnosis and fix on Gentoo Linux

Gentoo Linux — dev-embedded/u-boot-tools — vulnerability — patch and remediation guide

  • May 25, 2026
  • Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Gentoo Linux 📖 ~4 min read  •  Source: Gentoo GLSA GLSA-202405-23 Related CVEs: CVE-2020-8432 Upstream summary: A vulnerability has been discovered in U-Boot tools. Please review the CVE identifier referenced below for details. Table of contents Symptom & Impact Environment & Reproduction […]

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Rocky Linux 8 — perl-Sys-Syslog — vulnerability — patch and remediation guide — diagnosis and fix on Rocky Linux 8

Rocky Linux 8 — perl-Sys-Syslog — vulnerability — patch and remediation guide

  • May 25, 2026
  • Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Rocky Linux 8 📖 ~4 min read  •  Source: Rocky Linux RXSA RLSA-2026:8096 Related CVEs: CVE-2025-40909 Upstream summary: Perl is a high-level programming language that is commonly used for system administration utilities and web programming. Security Fix(es): * perl: Perl threads have […]

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Arch Linux — grub — multiple vulnerabilities (7 CVEs) — patch and remediation guide — diagnosis and fix on Arch Linux

Arch Linux — grub — multiple vulnerabilities (7 CVEs) — patch and remediation guide

  • May 25, 2026
  • Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Arch Linux (rolling release) 📖 ~4 min read  •  Source: Arch ASA ASA-202106-43 Related CVEs: CVE-2021-20233 CVE-2021-20225 CVE-2020-27779 CVE-2020-27749 CVE-2020-25647 CVE-2020-25632 CVE-2020-14372 Upstream summary: Type: multiple issues. Status: Fixed. Affected: 2:2.04-10. Fixed in: 2:2.06-1. Group: AVG-1629. Table of contents Symptom & Impact […]

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Alpine Linux 3.18 — discover — vulnerability — patch and remediation guide — diagnosis and fix on Alpine Linux 3.18

Alpine Linux 3.18 — discover — vulnerability — patch and remediation guide

  • May 25, 2026
  • Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Alpine Linux 3.18 / fixed in 5.21.3-r0 📖 ~4 min read  •  Source: Alpine secdb entry — discover 5.21.3-r0 Related CVEs: CVE-2021-28117 Upstream summary: Alpine community repository for vv3.18 ships discover 5.21.3-r0 which addresses CVE-2021-28117. Table of contents Symptom & Impact Environment […]

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Windows Server 2016 — KB5040497 — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Windows Server 2016

Windows Server 2016 — KB5040497 — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: Windows Server 2016 📖 ~4 min read  •  Source: Microsoft KB5040497 • MSRC update-guide entry Related CVEs: CVE-2024-38060 CVE-2024-38077 CVE-2024-38074 CVE-2024-38191 CVE-2024-30081 CVE-2024-35270 CVE-2024-38025 CVE-2024-38034  +12 more Affected components: Windows Server 2016 Windows Server 2016 (Server Core installation) Table of contents Symptom […]

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openSUSE Leap 15.5 — podman — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on openSUSE Leap 15.5

openSUSE Leap 15.5 — podman — multiple vulnerabilities (4 CVEs) — patch and remediation guide

  • May 25, 2026
  • Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: openSUSE Leap 15.5 📖 ~4 min read  •  Source: SUSE advisory openSUSE-SU-2024:14420-1 (see also SUSE bugzilla) Related CVEs: CVE-2024-9676 CVE-2024-9675 CVE-2024-9341 CVE-2024-9407 Upstream summary: A vulnerability was found in Podman, Buildah, and CRI-O. A symlink traversal vulnerability in the containers/storage library can […]

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NetBSD 9.4 — ffmpeg4 — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on NetBSD 9.4

NetBSD 9.4 — ffmpeg4 — multiple vulnerabilities (20 CVEs) — patch and remediation guide

  • May 25, 2026
  • BSD
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🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: NetBSD 9.4 📖 ~4 min read  •  Source: pkgsrc audit-packages entry Related CVEs: CVE-2018-1999013 CVE-2020-13904 CVE-2021-30123 CVE-2020-21688 CVE-2022-48434 CVE-2018-12460 CVE-2018-1999010 CVE-2018-1999011  +12 more Upstream summary: pkgsrc audit-packages flagged ffmpeg4<4.1 for vulnerability class 'use-after-free'. Reference: https://nvd.nist.gov/vuln/detail/CVE-2018-1999013 Table of contents Symptom & Impact Environment […]

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Red Hat Enterprise Linux 10 — libtiff — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Red Hat Enterprise Linux 10

Red Hat Enterprise Linux 10 — libtiff — multiple vulnerabilities (2 CVEs) — patch and remediation guide

  • May 25, 2026
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Red Hat Enterprise Linux 10 📖 ~4 min read  •  Source: Red Hat advisory RHSA RHSA-2026:19586 Related CVEs: CVE-2026-4775 CVE-2023-52356 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]

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AlmaLinux 8 — maven-common-artifact-filters — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — maven-common-artifact-filters — multiple vulnerabilities (2 CVEs) — patch and remediation guide

  • May 25, 2026
  • 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 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 by default […]

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