Security Hardening

Oracle Linux 10 — Unbreakable Enterprise kernel — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 10

Oracle Linux 10 — Unbreakable Enterprise kernel — vulnerability — patch and remediation guide (ELSA-2026-50112)

  • May 17, 2026
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 17 May 2026 Affected versions: Oracle Linux 10 📖 ~4 min read  •  Source: ELSA advisory ELSA-2026-50112 Related CVEs: CVE-2018-1000204 CVE-2025-38234 CVE-2025-38276 CVE-2025-38357 CVE-2025-40034 CVE-2025-40075 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]

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Oracle Linux 8 — postgresql:15 — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — postgresql:15 — vulnerability — patch and remediation guide (ELSA-2026-4059)

  • May 17, 2026
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 17 May 2026 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2026-4059 Related CVEs: CVE-2026-2004 CVE-2026-2005 CVE-2026-2006 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification […]

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openSUSE Leap 15.6 — go1.26 — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on openSUSE Leap 15.6

openSUSE Leap 15.6 — go1.26 — multiple vulnerabilities (2 CVEs) — patch and remediation guide

  • May 17, 2026
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: openSUSE Leap 15.6 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2026:0876-1 (see also SUSE bugzilla) Related CVEs: CVE-2026-27138 CVE-2026-27137 Upstream summary: Certificate verification can panic when a certificate in the chain has an empty DNS name and another certificate in the […]

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

Oracle Linux 9 — gnutls — vulnerability — patch and remediation guide (ELSA-2026-50149)

  • May 17, 2026
  • Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 17 May 2026 Affected versions: Oracle Linux 9 📖 ~4 min read  •  Source: ELSA advisory ELSA-2026-50149 Related CVEs: CVE-2025-14831 CVE-2025-9820 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & […]

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Oracle Linux 8 — java-1.8.0-openjdk — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — java-1.8.0-openjdk — vulnerability — patch and remediation guide (ELSA-2026-0932)

  • May 17, 2026
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 17 May 2026 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2026-0932 Related CVEs: CVE-2025-64720 CVE-2025-65018 CVE-2026-21925 CVE-2026-21933 CVE-2026-21945 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative […]

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Windows Server 2016 — KB5065511 — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Windows Server 2016

Windows Server 2016 — KB5065511 — 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 KB5065511 • MSRC update-guide entry Related CVEs: CVE-2025-54918 CVE-2025-55226 CVE-2025-53799 CVE-2025-53797 CVE-2025-53798 CVE-2025-54095 CVE-2025-54096 CVE-2025-54097  +12 more Affected components: Windows Server 2016 Microsoft summary: Improper authentication in Windows NTLM allows an authorized […]

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Oracle Linux 9 — go-rpm-macros — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 9

Oracle Linux 9 — go-rpm-macros — vulnerability — patch and remediation guide (ELSA-2026-8841)

  • May 17, 2026
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 17 May 2026 Affected versions: Oracle Linux 9 📖 ~4 min read  •  Source: ELSA advisory ELSA-2026-8841 Related CVEs: CVE-2026-25679 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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Oracle Linux 8 — go-toolset:ol8 — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — go-toolset:ol8 — vulnerability — patch and remediation guide (ELSA-2025-13940)

  • May 17, 2026
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 17 May 2026 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2025-13940 Related CVEs: CVE-2025-4674 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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SLES 15 — postgresql-jdbc — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on SLES 15

SLES 15 — postgresql-jdbc — multiple vulnerabilities (4 CVEs) — patch and remediation guide

  • May 17, 2026
  • Linux
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🔴 Critical   ⏱ 15–90 min  Last verified: 17 May 2026 Affected versions: SLES 15 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2024:0769-1 (see also SUSE bugzilla) Related CVEs: CVE-2024-1597 CVE-2026-42198 CVE-2022-31197 CVE-2022-41946 Upstream summary: pgjdbc, the PostgreSQL JDBC Driver, allows attacker to inject SQL if using PreferQueryMode=SIMPLE. Note this is not the default. […]

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Amazon Linux 2 — OpenEXR — multiple vulnerabilities (11 CVEs) — patch and remediation guide — diagnosis and fix on Amazon Linux 2

Amazon Linux 2 — OpenEXR — multiple vulnerabilities (11 CVEs) — patch and remediation guide

  • May 17, 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 ALAS2-2026-3267 Related CVEs: CVE-2026-34544 CVE-2026-34588 CVE-2021-3479 CVE-2021-20298 CVE-2021-20303 CVE-2021-20304 CVE-2021-3475 CVE-2021-3605  +3 more Upstream summary: OpenEXR provides the specification and reference implementation of the EXR file format, an image storage […]

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