Kernel Drivers

Oracle Linux 8 — kernel security, bug fix, and — enhancement update — new behaviour and fixes — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — kernel security, bug fix, and — enhancement update — new behaviour and fixes (ELSA-2023-2951)

  • May 14, 2021
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 14 May 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2023-2951 Related CVEs: CVE-2023-23454 CVE-2022-1679 CVE-2022-42722 CVE-2022-20141 CVE-2022-1462 CVE-2022-1789 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]

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Common Problems 113430

Windows Server 2012 R2 — Kerberos token bloat causes logon failure for users in many groups — Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 14 May 2021 Affected versions: Windows Server 2012 R2 📖 ~2 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 […]

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How to Set Up SFTP Server with Chroot Jail on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Set Up SFTP Server with Chroot Jail on Debian 9

  • May 14, 2021
  • Linux
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Introduction How to Set Up SFTP Server with Chroot Jail on Debian 9 is a fundamental operation for any administrator maintaining a Debian 9 Stretch server. Debian 9 Stretch ships with the Linux 6.12 kernel, updated toolchains, and a fully refreshed package archive — meaning version numbers, configuration file paths, and some dependency chains differ […]

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

FreeBSD 13 — xen-kernel — multiple vulnerabilities (20 CVEs) — patch and remediation guide

  • May 14, 2021
  • BSD
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🟠 High   ⏱ 15–60 min  Last verified: 14 May 2021 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: xen-kernel — multiple vulnerabilities Related CVEs: CVE-2015-0268 CVE-2015-1563 CVE-2015-2044 CVE-2015-2045 CVE-2015-2151 CVE-2015-2751 CVE-2015-2752 CVE-2015-3340  +12 more Upstream summary: The Xen project reports multiple vulnerabilities. Table of contents Symptom & Impact […]

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Gentoo Linux — app-emulation/qemu — multiple vulnerabilities (20 CVEs) — patch and remediation guide

Gentoo Linux — app-emulation/qemu — multiple vulnerabilities (20 CVEs) — patch and remediation guide

  • May 13, 2021
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Gentoo Linux 📖 ~4 min read  •  Source: Gentoo GLSA GLSA-202208-27 Related CVEs: CVE-2020-15859 CVE-2020-15863 CVE-2020-16092 CVE-2020-35504 CVE-2020-35505 CVE-2020-35506 CVE-2020-35517 CVE-2021-3409  +12 more Upstream summary: Multiple vulnerabilities have been discovered in QEMU.Please review the CVE identifiers referenced below for details. Table of […]

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Oracle Linux 8 — kernel security, bug fix, and — enhancement update — new behaviour and fixes — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — kernel security, bug fix, and — enhancement update — new behaviour and fixes (ELSA-2019-3517)

  • May 11, 2021
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 11 May 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2019-3517 Related CVEs: CVE-2019-3900 CVE-2019-10638 CVE-2019-14821 CVE-2019-11599 CVE-2019-11884 CVE-2019-7222 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]

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Amazon Linux 2 — kernel-livepatch-4.14.193-149.317 — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Amazon Linux 2

Amazon Linux 2 — kernel-livepatch-4.14.193-149.317 — multiple vulnerabilities (2 CVEs) — patch and remediation guide

  • May 11, 2021
  • Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Amazon Linux 2 📖 ~4 min read  •  Source: Amazon Linux advisory ALAS2LIVEPATCH-2020-029 Related CVEs: CVE-2020-25211 CVE-2020-25284 Upstream summary: A flaw was found in the Linux kernel. A local attacker, able to inject conntrack netlink configuration, could overflow a local buffer causing […]

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Amazon Linux 2 — kernel-livepatch-4.14.200-155.322 — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Amazon Linux 2

Amazon Linux 2 — kernel-livepatch-4.14.200-155.322 — multiple vulnerabilities (2 CVEs) — patch and remediation guide

  • May 11, 2021
  • 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-2021-031 Related CVEs: CVE-2020-29660 CVE-2020-29661 Upstream summary: A locking inconsistency issue was discovered in the tty subsystem of the Linux kernel through 5.9.13. drivers/tty/tty_io.c and drivers/tty/tty_jobctrl.c may allow a read-after-free […]

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How to Add a Sudo User on Oracle Linux 8 — step-by-step Oracle Linux 8 tutorial on Progressive Robot

How to Add a Sudo User on Oracle Linux 8

Introduction Oracle Linux 8 ships with a stable, security-hardened base that makes deploying add a sudo user on oracle linux 8 both straightforward and auditable. This tutorial covers the complete procedure for how to Add a Sudo User on Oracle Linux 8, including dnf module streams where applicable, systemd unit management, and the firewalld rules […]

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Common Problems 113446

Windows Server 2012 R2 – NVMe stornvme timeout storms trigger disk failover – Fix and Prevention

🟠 High   ⏱ 5–30 min  Last verified: 10 May 2021 Affected versions: Windows Server 2012 R2 📖 ~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 […]

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