Common Problems

Oracle Linux 9 — nginx:1.26 — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 9

Oracle Linux 9 — nginx:1.26 — vulnerability — patch and remediation guide (ELSA-2026-4235)

🟡 Medium   ⏱ 10–30 min  Last verified: 2 March 2026 Affected versions: Oracle Linux 9 📖 ~4 min read  •  Source: ELSA advisory ELSA-2026-4235 Related CVEs: CVE-2026-1642 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 — nodejs:22 — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — nodejs:22 — vulnerability — patch and remediation guide (ELSA-2025-11803)

🟠 High   ⏱ 15–60 min  Last verified: 2 March 2026 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2025-11803 Related CVEs: CVE-2025-6965 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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CentOS Stream 10 — tar — vulnerability — patch and remediation guide — diagnosis and fix on CentOS Stream 10

CentOS Stream 10 — tar — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 2 March 2026 Affected versions: CentOS Stream 10 📖 ~4 min read  •  Source: AlmaLinux/RHEL advisory ALSA-2026:0002 Related CVEs: CVE-2025-45582 Upstream summary: The GNU tar program can save multiple files in an archive and restore files from an archive. Security Fix(es): * tar: Tar path traversal (CVE-2025-45582) […]

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Red Hat Enterprise Linux 7 — python-urllib3 — vulnerability — patch and remediation guide — diagnosis and fix on Red Hat Enterprise Linux 7

Red Hat Enterprise Linux 7 — python-urllib3 — vulnerability — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Red Hat Enterprise Linux 7 📖 ~4 min read  •  Source: Red Hat advisory RHSA RHSA-2026:9031 Related CVEs: CVE-2025-66471 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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SLES 15 — libcap2 — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on SLES 15

SLES 15 — libcap2 — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 2 March 2026 Affected versions: SLES 15 📖 ~4 min read  •  Source: SUSE advisory RHSA-2026:12423 (see also SUSE bugzilla) Related CVEs: CVE-2026-4878 CVE-2023-2603 CVE-2023-2602 Upstream summary: A flaw was found in libcap. A local unprivileged user can exploit a Time-of-check-to-time-of-use (TOCTOU) race condition in the `cap_set_file()` […]

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NetBSD 10.0 — xenkernel420 — multiple vulnerabilities (8 CVEs) — patch and remediation guide — diagnosis and fix on NetBSD 10.0

NetBSD 10.0 — xenkernel420 — multiple vulnerabilities (8 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: NetBSD 10.0 📖 ~4 min read  •  Source: pkgsrc audit-packages entry Related CVEs: CVE-2025-27466 CVE-2025-58142 CVE-2025-58143 CVE-2025-58149 CVE-2025-58150 CVE-2025-58147 CVE-2025-58148 CVE-2026-23553 Upstream summary: pkgsrc audit-packages flagged xenkernel420<20251113 for vulnerability class 'null-pointer-dereference'. Reference: https://nvd.nist.gov/vuln/detail/CVE-2025-27466 Table of contents Symptom & Impact Environment & Reproduction […]

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Common Problems 114025

RHEL 10 – NFS mount intermittently hits stale file handle errors on client

🟠 High   ⏱ 5–30 min  Last verified: 1 March 2026 Affected versions: RHEL 10 RHEL 10.0 RHEL 10.1 📖 ~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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FreeBSD 15 — plexmediaserver — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 15

FreeBSD 15 — plexmediaserver — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 1 March 2026 Affected versions: FreeBSD 15 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: Plex Media Server — security vulnerability Related CVEs: CVE-2018-13415 CVE-2021-42835 Upstream summary: Plex Security Team reports: We have recently been made aware of a security vulnerability in Plex Media Server […]

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Windows Server 2025 — KB5051987 — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Windows Server 2025

Windows Server 2025 — KB5051987 — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: Windows Server 2025 📖 ~4 min read  •  Source: Microsoft KB5051987 • MSRC update-guide entry Related CVEs: CVE-2025-21376 CVE-2025-21379 CVE-2025-26634 CVE-2025-21351 CVE-2025-21352 CVE-2025-21368 CVE-2025-21369 CVE-2025-21375  +12 more Affected components: Windows Server 2025 Table of contents Symptom & Impact Environment & Reproduction Root […]

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FreeBSD 15 — ko-hcode — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 15

FreeBSD 15 — ko-hcode — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 1 March 2026 Affected versions: FreeBSD 15 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: hcode — buffer overflow in mail.c Related CVEs: CVE-2024-34020 Upstream summary: The openSUSE project reports: The problematic function in question is putSDN() in mail.c. The static variable `cp` is used […]

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