Operations

Ubuntu 20.04 — linux-aws-5.11 — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — linux-aws-5.11 — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 23 April 2022 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5265-1 Related CVEs: CVE-2020-27820 CVE-2021-3640 CVE-2021-3752 CVE-2021-3772 CVE-2021-4001 CVE-2021-4090 CVE-2021-4093 CVE-2021-4202  +12 more Upstream summary: Jeremy Cline discovered a use-after-free in the nouveau graphics driver of the Linux kernel during […]

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AlmaLinux 8 — pipewire — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — pipewire — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read  •  Source: AlmaLinux ALSA ALSA-2020:4451 Related CVEs: CVE-2019-8625 CVE-2019-8710 CVE-2019-8720 CVE-2019-8743 CVE-2019-8764 CVE-2019-8766 CVE-2019-8769 CVE-2019-8771  +12 more Upstream summary: GNOME is the default desktop environment of AlmaLinux. The following packages have been upgraded to a later […]

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Ubuntu 18.04 — node-object-path — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — node-object-path — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 23 April 2022 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5967-1 Related CVEs: CVE-2020-15256 CVE-2021-23434 CVE-2021-3805 Upstream summary: It was discovered that the set() method in object-path could be corrupted as a result of prototype pollution by sending a message […]

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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-2022-9533)

🟠 High   ⏱ 15–60 min  Last verified: 23 April 2022 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2022-9533 Related CVEs: CVE-2022-1263 CVE-2021-4095 CVE-2022-29582 CVE-2022-1015 CVE-2022-28390 CVE-2022-28388 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 — cups-base — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — cups-base — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 23 April 2022 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: cups — multiple vulnerabilities Related CVEs: CVE-2004-0558 CVE-2004-0888 CVE-2004-0889 CVE-2004-0923 CVE-2004-1125 CVE-2004-1267 CVE-2005-0064 CVE-2005-2097  +12 more Upstream summary: CUPS development team reports: The new release addresses two security vulnerabilities, add […]

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Gentoo Linux — dev-python/joblib — vulnerability — patch and remediation guide — diagnosis and fix on Gentoo Linux

Gentoo Linux — dev-python/joblib — vulnerability — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Gentoo Linux 📖 ~4 min read  •  Source: Gentoo GLSA GLSA-202401-01 Related CVEs: CVE-2022-21797 Upstream summary: A vulnerability has been discovered in Joblib. Please review the CVE identifier referenced below for details. Table of contents Symptom & Impact Environment & Reproduction Root […]

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How to Set Up Pacemaker and Corosync for High Availability on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Set Up Pacemaker and Corosync for High Availability on RHEL 8

Pacemaker and Corosync together form the de facto high-availability (HA) cluster stack for Linux. Corosync provides the cluster messaging and quorum layer, while Pacemaker manages resources — ensuring that services like virtual IP addresses and web servers start, stop, and migrate between nodes according to defined constraints. On RHEL 8, both packages are available through […]

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AlmaLinux 8 — exempi — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — exempi — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read  •  Source: AlmaLinux ALSA ALSA-2024:3066 Related CVEs: CVE-2020-18651 CVE-2020-18652 Upstream summary: Exempi provides a library for easy parsing of XMP metadata. Security Fix(es): * exempi: denial of service via opening of crafted audio file with ID3V2 […]

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