Security Hardening

Oracle Linux 8 — Unbreakable Enterprise kernel — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — Unbreakable Enterprise kernel — vulnerability — patch and remediation guide (ELSA-2026-50262)

  • July 2, 2026
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 2 July 2026 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2026-50262 Related CVEs: CVE-2025-54518 CVE-2025-71120 CVE-2026-23074 CVE-2026-31431 CVE-2026-31628 CVE-2026-43033 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]

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FreeBSD 13 — jenkins — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — jenkins — multiple vulnerabilities (20 CVEs) — patch and remediation guide

  • July 2, 2026
  • BSD
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🟠 High   ⏱ 15–60 min  Last verified: 2 July 2026 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: jenkins — multiple vulnerabilities Related CVEs: CVE-2011-4969 CVE-2013-1808 CVE-2013-2033 CVE-2013-2034 CVE-2013-2186 CVE-2013-5573 CVE-2013-7285 CVE-2014-1869  +12 more Upstream summary: Jenkins Security Advisory 2026-03-18: SECURITY-3657 / CVE-2026-33001: Arbitrary file write vulnerability through […]

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Red Hat Enterprise Linux 8 — grafana-pcp — multiple vulnerabilities (8 CVEs) — patch and remediation guide — diagnosis and fix on Red Hat Enterprise Linux 8

Red Hat Enterprise Linux 8 — grafana-pcp — multiple vulnerabilities (8 CVEs) — patch and remediation guide

  • July 2, 2026
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Red Hat Enterprise Linux 8 📖 ~4 min read  •  Source: Red Hat advisory RHSA RHSA-2026:11514 Related CVEs: CVE-2026-32280 CVE-2026-32282 CVE-2026-32283 CVE-2026-25679 CVE-2025-61726 CVE-2025-61729 CVE-2025-68121 CVE-2025-13204 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis […]

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FreeBSD 15 — xwayland — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 15

FreeBSD 15 — xwayland — multiple vulnerabilities (20 CVEs) — patch and remediation guide

  • July 2, 2026
  • BSD
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🟠 High   ⏱ 15–60 min  Last verified: 2 July 2026 Affected versions: FreeBSD 15 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: xwayland — Multiple vulnerabilities Related CVEs: CVE-2017-12176 CVE-2017-12177 CVE-2017-12178 CVE-2017-12179 CVE-2017-12180 CVE-2017-12181 CVE-2017-12182 CVE-2017-12183  +12 more Upstream summary: X.Org project reports: Multiple issues have been found in the X server […]

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Debian 13 — exim4 — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — exim4 — multiple vulnerabilities (20 CVEs) — patch and remediation guide

  • July 2, 2026
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 2 July 2026 Affected versions: Debian 13 (trixie) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2002-1381 CVE-2004-0399 CVE-2004-0400 CVE-2005-0021 CVE-2005-0022 CVE-2010-2023 CVE-2010-2024 CVE-2010-4344  +12 more Upstream summary: Format string vulnerability in daemon.c for Exim 4.x through 4.10, and 3.x through 3.36, allows exim […]

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NetBSD 10.0 — py-ply — vulnerability — patch and remediation guide — diagnosis and fix on NetBSD 10.0

NetBSD 10.0 — py-ply — vulnerability — patch and remediation guide

  • July 1, 2026
  • BSD
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🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: NetBSD 10.0 📖 ~4 min read  •  Source: pkgsrc audit-packages entry Related CVEs: CVE-2025-56005 Upstream summary: pkgsrc audit-packages flagged py{27,310,311,312,313,314}-ply-[0-9]* for vulnerability class 'code-execution'. Reference: https://nvd.nist.gov/vuln/detail/CVE-2025-56005 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis […]

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How to Set Resource Limits with /etc/security/limits.conf on RHEL 10 — step-by-step RHEL 10 tutorial on Progressive Robot

How to Set Resource Limits with /etc/security/limits.conf on RHEL 10

  • July 1, 2026
  • Linux
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Introduction This tutorial demonstrates how to Set Resource Limits with /etc/security/limits.conf on RHEL 10 on RHEL 10. It is written for administrators who want a repeatable, well-explained walkthrough that goes beyond a bare command list and explains each configuration choice. Every command is tested against a freshly registered RHEL 10 system with the default AppStream […]

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