Linux

Gentoo Linux — net-wireless/wpa_supplicant — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Gentoo Linux

Gentoo Linux — net-wireless/wpa_supplicant — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Gentoo Linux 📖 ~4 min read  •  Source: Gentoo GLSA GLSA-202309-16 Related CVEs: CVE-2021-30004 CVE-2022-23303 CVE-2022-23304 Upstream summary: Multiple vulnerabilities have been discovered in hostapd and wpa_supplicant. Please review the CVE identifiers referenced below for details. Table of contents Symptom & Impact […]

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Gentoo Linux — app-arch/dpkg — vulnerability — patch and remediation guide — diagnosis and fix on Gentoo Linux

Gentoo Linux — app-arch/dpkg — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Gentoo Linux 📖 ~4 min read  •  Source: Gentoo GLSA GLSA-202408-30 Related CVEs: CVE-2022-1664 Upstream summary: Please review the CVE indentifier referenced below for details. Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution […]

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Debian 11 — leocad — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — leocad — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 11 February 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2021-31804 Upstream summary: LeoCAD before 21.03 sometimes allows a use-after-free during the opening of a new document. Table of contents Symptom & Impact Environment & Reproduction Root Cause […]

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openSUSE Tumbleweed — libpano13 — vulnerability — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — libpano13 — vulnerability — patch and remediation guide

🟠 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-2021-20307 Upstream summary: Format string vulnerability in panoFileOutputNamesCreate() in libpano13 2.9.20~rc2+dfsg-3 and earlier can lead to read and write arbitrary memory values. Table of contents […]

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Ubuntu 20.04 — digikam — multiple vulnerabilities (9 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — digikam — multiple vulnerabilities (9 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 11 February 2022 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-7266-1 Related CVEs: CVE-2017-0691 CVE-2020-19858 CVE-2020-22628 CVE-2020-35530 CVE-2020-35531 CVE-2020-35532 CVE-2020-35533 CVE-2021-32142  +1 more Upstream summary: Zinuo Han and Ao Wang discovered that the Android DNG SDK, vendored in digiKam, did […]

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openSUSE Tumbleweed — kate — vulnerability — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — kate — vulnerability — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE advisory openSUSE-SU-2022:0841-1 (see also SUSE bugzilla) Related CVEs: CVE-2022-23853 Upstream summary: The LSP (Language Server Protocol) plugin in KDE Kate before 21.12.2 and KTextEditor before 5.91.0 tries to execute the associated LSP server […]

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SLES 15 — pesign — vulnerability — patch and remediation guide — diagnosis and fix on SLES 15

SLES 15 — pesign — vulnerability — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 11 February 2022 Affected versions: SLES 15 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2023:0484-1 (see also SUSE bugzilla) Related CVEs: CVE-2022-3560 Upstream summary: A flaw was found in pesign. The pesign package provides a systemd service used to start the pesign daemon. This service unit […]

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How to Configure Fail2ban on CentOS Stream 9 — step-by-step CentOS Stream 9 tutorial on Progressive Robot

How to Configure Fail2ban on CentOS Stream 9

Introduction How to Configure Fail2ban on CentOS Stream 9 on CentOS Stream 9 provides administrators with a robust, enterprise-ready workflow that integrates cleanly with systemd, SELinux, firewalld, and the modern AppStream module system. In this tutorial we will walk through every step required, from package installation to verification, so that the resulting configuration is reproducible […]

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Oracle Linux 8 — httpd:2.4 security, bug fix, and — enhancement update — new behaviour and fixes — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — httpd:2.4 security, bug fix, and — enhancement update — new behaviour and fixes (ELSA-2021-4257)

🟡 Medium   ⏱ 10–30 min  Last verified: 10 February 2022 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2021-4257 Related CVEs: CVE-2021-30641 CVE-2021-26690 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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AlmaLinux 8 — jimtcl — vulnerability — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — jimtcl — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read  •  Source: AlmaLinux ALSA ALBA-2020:4499 Upstream summary: For detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section. Table of contents Symptom & Impact Environment & Reproduction Root Cause […]

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