Security Hardening

Ubuntu 24.04 — openssl — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 24.04

Ubuntu 24.04 — openssl — multiple vulnerabilities (20 CVEs) — patch and remediation guide

  • July 31, 2026
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 31 July 2026 Affected versions: Ubuntu 24.04 (noble) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-8155-1 Related CVEs: CVE-2026-28387 CVE-2026-2673 CVE-2026-31790 CVE-2026-28388 CVE-2026-28389 CVE-2026-31789 CVE-2026-28390 CVE-2026-22796  +12 more Upstream summary: Viktor Dukhovni discovered that OpenSSL incorrectly negotiated the expected preferred key exchange group when used […]

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

Oracle Linux 10 — vsftpd — vulnerability — patch and remediation guide (ELSA-2026-0606)

  • July 31, 2026
  • Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 31 July 2026 Affected versions: Oracle Linux 10 📖 ~4 min read  •  Source: ELSA advisory ELSA-2026-0606 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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SLES 16 — python313-numpy — multiple vulnerabilities (5 CVEs) — patch and remediation guide — diagnosis and fix on SLES 16

SLES 16 — python313-numpy — multiple vulnerabilities (5 CVEs) — patch and remediation guide

  • July 31, 2026
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 31 July 2026 Affected versions: SLES 16 📖 ~4 min read  •  Source: SUSE advisory SUSE-CU-2022:314-1 (see also SUSE bugzilla) Related CVEs: CVE-2021-33430 CVE-2017-12852 CVE-2019-6446 CVE-2021-41495 CVE-2021-41496 Upstream summary: A Buffer Overflow vulnerability exists in NumPy 1.9.x in the PyArray_NewFromDescr_int function of ctors.c when specifying arrays of […]

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Oracle Linux 10 — mysql8.4 — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 10

Oracle Linux 10 — mysql8.4 — vulnerability — patch and remediation guide (ELSA-2026-4162)

  • July 31, 2026
  • Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 31 July 2026 Affected versions: Oracle Linux 10 📖 ~4 min read  •  Source: ELSA advisory ELSA-2026-4162 Related CVEs: CVE-2026-21936 CVE-2026-21937 CVE-2026-21941 CVE-2026-21948 CVE-2026-21964 CVE-2026-21968 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 10 — kernel — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 10

Oracle Linux 10 — kernel — vulnerability — patch and remediation guide (ELSA-2026-6053)

  • July 31, 2026
  • Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 31 July 2026 Affected versions: Oracle Linux 10 📖 ~4 min read  •  Source: ELSA advisory ELSA-2026-6053 Related CVEs: CVE-2025-71238 CVE-2026-23231 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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How to Set Up MongoDB Replica Set on FreeBSD 15 — step-by-step FreeBSD 15 tutorial on Progressive Robot

How to Set Up MongoDB Replica Set on FreeBSD 15

  • July 31, 2026
  • FreeBSD
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Introduction How to Set Up MongoDB Replica Set on FreeBSD 15 is a core administration task for any FreeBSD 15 server operator. FreeBSD 15 ships with the 15.0-RELEASE kernel, ZFS as the default root filesystem, Capsicum capability sandboxing improvements, and an updated ports tree. Unlike Linux distributions, FreeBSD uses rc(8) for service management, pf for […]

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

Oracle Linux 10 — kernel — vulnerability — patch and remediation guide (ELSA-2026-0786)

  • July 31, 2026
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 31 July 2026 Affected versions: Oracle Linux 10 📖 ~4 min read  •  Source: ELSA advisory ELSA-2026-0786 Related CVEs: CVE-2025-68285 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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openSUSE Tumbleweed — python313-PyMuPDF — vulnerability — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — python313-PyMuPDF — vulnerability — patch and remediation guide

  • July 31, 2026
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE security advisory (see also SUSE bugzilla) Related CVEs: CVE-2026-3029 Upstream summary: A path traversal and arbitrary file write vulnerability exist in the embedded get function in '_main_.py' in PyMuPDF version, 1.26.5. Table of […]

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SLES 15 — strongswan — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on SLES 15

SLES 15 — strongswan — multiple vulnerabilities (20 CVEs) — patch and remediation guide

  • July 31, 2026
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 31 July 2026 Affected versions: SLES 15 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2026:1637-1 (see also SUSE bugzilla) Related CVEs: CVE-2026-35329 CVE-2026-35330 CVE-2026-35332 CVE-2026-35333 CVE-2026-35334 CVE-2026-35328 CVE-2026-25075 CVE-2025-62291  +12 more Upstream summary: Unknown. Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis […]

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SLES 15 — gvfs — multiple vulnerabilities (7 CVEs) — patch and remediation guide — diagnosis and fix on SLES 15

SLES 15 — gvfs — multiple vulnerabilities (7 CVEs) — patch and remediation guide

  • July 31, 2026
  • Linux
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🔴 Critical   ⏱ 15–90 min  Last verified: 31 July 2026 Affected versions: SLES 15 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2019:1717-1 (see also SUSE bugzilla) Related CVEs: CVE-2019-12447 CVE-2019-12449 CVE-2026-28296 CVE-2019-12448 CVE-2026-28295 CVE-2019-12795 CVE-2019-3827 Upstream summary: An issue was discovered in GNOME gvfs 1.29.4 through 1.41.2. daemon/gvfsbackendadmin.c mishandles file ownership because setfsuid […]

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