Kernel Drivers

NetBSD 9.4 — xenkernel3 — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on NetBSD 9.4

NetBSD 9.4 — xenkernel3 — multiple vulnerabilities (4 CVEs) — patch and remediation guide

  • April 23, 2024
  • BSD
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🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: NetBSD 9.4 📖 ~4 min read  •  Source: pkgsrc audit-packages entry Related CVEs: CVE-2007-5906 CVE-2007-5907 CVE-2011-1166 CVE-2011-2901 Upstream summary: pkgsrc audit-packages flagged xenkernel3<3.1.4 for vulnerability class 'denial-of-service'. Reference: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-5906 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick […]

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How to Configure iptables Firewall Rules on RHEL 9 — step-by-step RHEL 9 tutorial on Progressive Robot

How to Configure iptables Firewall Rules on RHEL 9

  • April 21, 2024
  • Linux
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iptables has been the standard Linux packet-filtering firewall for over two decades, and while RHEL 9 ships with nftables and firewalld as the preferred tools, iptables remains available and is widely understood by seasoned administrators. Learning iptables gives you deep insight into how Linux netfilter works and is valuable for managing legacy systems or containers […]

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Amazon Linux 2023 — kernel-livepatch-6.1.49-70.116 — multiple vulnerabilities (7 CVEs) — patch and remediation guide — diagnosis and fix on Amazon Linux 2023

Amazon Linux 2023 — kernel-livepatch-6.1.49-70.116 — multiple vulnerabilities (7 CVEs) — patch and remediation guide

  • April 20, 2024
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Amazon Linux 2023 📖 ~4 min read  •  Source: Amazon Linux advisory ALAS2023LIVEPATCH-2023-026 Related CVEs: CVE-2023-42752 CVE-2023-45871 CVE-2023-4623 CVE-2023-4921 CVE-2023-5090 CVE-2023-5197 CVE-2023-5717 Upstream summary: An integer overflow in kmalloc_reserve() in the Linux kernel may allow a local user to crash the system, […]

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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-2024-12208)

  • April 18, 2024
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 18 April 2024 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2024-12208 Related CVEs: CVE-2024-1085 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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NetBSD 10.0 — xenkernel46 — vulnerability — patch and remediation guide — diagnosis and fix on NetBSD 10.0

NetBSD 10.0 — xenkernel46 — vulnerability — patch and remediation guide

  • April 17, 2024
  • BSD
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🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: NetBSD 10.0 📖 ~4 min read  •  Source: pkgsrc audit-packages entry Upstream summary: pkgsrc audit-packages flagged xenkernel46<4.6.4 for vulnerability class 'privilege-elevation'. Reference: https://xenbits.xen.org/xsa/advisory-182.html Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary […]

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Amazon Linux 2 — kernel-livepatch-5.10.157-139.675 — multiple vulnerabilities (5 CVEs) — patch and remediation guide — diagnosis and fix on Amazon Linux 2

Amazon Linux 2 — kernel-livepatch-5.10.157-139.675 — multiple vulnerabilities (5 CVEs) — patch and remediation guide

  • April 17, 2024
  • 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-2023-117 Related CVEs: CVE-2023-1078 CVE-2023-26545 CVE-2023-0179 CVE-2022-3623 CVE-2022-4378 Upstream summary: The upstream bug report describes this issue as follows: A flaw found in the Linux Kernel in RDS (Reliable Datagram […]

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Amazon Linux 2 — kernel-livepatch-5.10.162-141.675 — multiple vulnerabilities (5 CVEs) — patch and remediation guide — diagnosis and fix on Amazon Linux 2

Amazon Linux 2 — kernel-livepatch-5.10.162-141.675 — multiple vulnerabilities (5 CVEs) — patch and remediation guide

  • April 17, 2024
  • 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-2023-121 Related CVEs: CVE-2023-1077 CVE-2023-28466 CVE-2023-1078 CVE-2023-26545 CVE-2023-0179 Upstream summary: kernel: Type confusion in pick_next_rt_entity(), which can result in memory corruption. (CVE-2023-1077) do_tls_getsockopt in net/tls/tls_main.c in the Linux kernel through […]

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Common Problems 114484

Custom SELinux Policy Needed for Internal App

🟡 Medium   ⏱ 5–30 min  Last verified: 17 April 2024 📖 ~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 & Hardening Related Errors & Cross-Refs References & Further […]

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NetBSD 9.4 — xentools413 — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on NetBSD 9.4

NetBSD 9.4 — xentools413 — multiple vulnerabilities (20 CVEs) — patch and remediation guide

  • April 12, 2024
  • 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-2020-29483 CVE-2020-29479 CVE-2020-29480 CVE-2020-29481 CVE-2022-42324 CVE-2022-42323 CVE-2022-42322 CVE-2022-42309  +12 more Upstream summary: pkgsrc audit-packages flagged xentools413<4.13.2nb2 for vulnerability class 'use-after-free'. Reference: https://nvd.nist.gov/vuln/detail/CVE-2020-29483 Table of contents Symptom & Impact Environment […]

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How to Install Graylog for Centralised Log Management on RHEL 9 — step-by-step RHEL 9 tutorial on Progressive Robot

How to Install Graylog for Centralised Log Management on RHEL 9

  • April 11, 2024
  • Linux
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Graylog is an open-source centralised log management platform that collects, indexes, and analyses log data from across your infrastructure in one place. On RHEL 9, deploying Graylog 5.x gives operations teams powerful search, alerting, and dashboarding capabilities without relying on cloud-based log services. Graylog depends on MongoDB for metadata storage and OpenSearch (or Elasticsearch) for […]

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