Linux

Oracle Linux 9 — Unbreakable Enterprise kernel — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 9

Oracle Linux 9 — Unbreakable Enterprise kernel — vulnerability — patch and remediation guide (ELSA-2026-50133)

🟠 High   ⏱ 15–60 min  Last verified: 17 January 2025 Affected versions: Oracle Linux 9 📖 ~4 min read  •  Source: ELSA advisory ELSA-2026-50133 Related CVEs: CVE-2025-40149 CVE-2025-40256 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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Gentoo Linux — app-admin/sudo — multiple vulnerabilities (14 CVEs) — patch and remediation guide — diagnosis and fix on Gentoo Linux

Gentoo Linux — app-admin/sudo — multiple vulnerabilities (14 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Gentoo Linux 📖 ~4 min read  •  Source: Gentoo GLSA GLSA-202507-01 Related CVEs: CVE-2025-32462 CVE-2025-32463 CVE-2023-42465 CVE-2023-27320 CVE-2023-28486 CVE-2023-28487 CVE-2023-22809 CVE-2021-23239  +6 more Upstream summary: Multiple vulnerabilities have been discovered in sudo. Please review the CVE identifiers referenced below for details. Table […]

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How to Create and Manage Swap Space on RHEL 9 — step-by-step RHEL 9 tutorial on Progressive Robot

How to Create and Manage Swap Space on RHEL 9

Swap space acts as overflow memory. When the physical RAM is full, the Linux kernel moves the least-recently-used memory pages to swap on disk, freeing physical RAM for active processes. Without swap, when RAM is exhausted the Out of Memory (OOM) killer terminates processes — often the largest one, which is frequently your database or […]

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AlmaLinux 8 — mpg123 — vulnerability — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — mpg123 — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read  •  Source: AlmaLinux ALSA ALSA-2024:11193 Related CVEs: CVE-2024-10573 Upstream summary: The mpg123 packages contain real time MPEG 1.0/2.0/2.5 audio player/decoder for layers 1, 2, and 3 (most commonly MPEG 1.0 layer 3 also known as MP3), […]

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Debian 12 — kmail-account-wizard — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — kmail-account-wizard — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 16 January 2025 Affected versions: Debian 12 (bookworm) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2020-15954 CVE-2024-50624 Upstream summary: KDE KMail 19.12.3 (aka 5.13.3) engages in unencrypted POP3 communication during times when the UI indicates that encryption is in use. Table of contents […]

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Alpine Linux 3.19 — glib-networking — vulnerability — patch and remediation guide — diagnosis and fix on Alpine Linux 3.19

Alpine Linux 3.19 — glib-networking — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Alpine Linux 3.19 / fixed in 2.64.3-r0 📖 ~4 min read  •  Source: Alpine secdb entry — glib-networking 2.64.3-r0 Related CVEs: CVE-2020-13645 Upstream summary: Alpine community repository for vv3.19 ships glib-networking 2.64.3-r0 which addresses CVE-2020-13645. Table of contents Symptom & Impact Environment […]

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Debian 12 — golang-github-jackc-pgx — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — golang-github-jackc-pgx — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 16 January 2025 Affected versions: Debian 12 (bookworm) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2024-27289 CVE-2024-27304 Upstream summary: pgx is a PostgreSQL driver and toolkit for Go. Prior to version 4.18.2, SQL injection can occur when all of the following conditions are […]

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Ubuntu 24.04 — node-cipher-base — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 24.04

Ubuntu 24.04 — node-cipher-base — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 16 January 2025 Affected versions: Ubuntu 24.04 (noble) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-7746-1 Related CVEs: CVE-2025-9287 Upstream summary: Nikita Skovoroda discovered that cipher-base did not properly manage certain inputs. An attacker could possibly use this issue to manipulate the internal state of […]

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Alpine Linux 3.19 — flatpak — multiple vulnerabilities (6 CVEs) — patch and remediation guide — diagnosis and fix on Alpine Linux 3.19

Alpine Linux 3.19 — flatpak — multiple vulnerabilities (6 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Alpine Linux 3.19 / fixed in 1.2.4-r0 📖 ~4 min read  •  Source: Alpine secdb entry — flatpak 1.2.4-r0 Related CVEs: CVE-2019-10063 CVE-2024-32462 CVE-2022-21682 CVE-2021-43860 CVE-2021-41133 CVE-2021-21261 Upstream summary: Alpine community repository for vv3.19 ships flatpak 1.2.4-r0 which addresses CVE-2019-10063. Table of […]

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Ubuntu 20.04 — undertow — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — undertow — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 16 January 2025 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-8144-1 Related CVEs: CVE-2025-12543 Upstream summary: It was discovered that Undertow incorrectly validated the Host header in incoming HTTP requests. A remote attacker could possibly use this issue to gain […]

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