Linux

CentOS Stream 10 — ipa — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on CentOS Stream 10

CentOS Stream 10 — ipa — multiple vulnerabilities (2 CVEs) — patch and remediation guide

  • April 30, 2025
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 30 April 2025 Affected versions: CentOS Stream 10 📖 ~4 min read  •  Source: AlmaLinux/RHEL advisory ALSA-2025:20994 Related CVEs: CVE-2025-7493 CVE-2025-4404 Upstream summary: AlmaLinux Identity Management (IdM) is a centralized authentication, identity management, and authorization solution for both traditional and cloud-based enterprise environments. Security Fix(es): * FreeIPA: […]

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openSUSE Leap 15.6 — python311-asteval — vulnerability — patch and remediation guide — diagnosis and fix on openSUSE Leap 15.6

openSUSE Leap 15.6 — python311-asteval — vulnerability — patch and remediation guide

  • April 30, 2025
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: openSUSE Leap 15.6 📖 ~4 min read  •  Source: SUSE advisory openSUSE-SU-2025:0052-1 (see also SUSE bugzilla) Related CVEs: CVE-2025-24359 Upstream summary: ASTEVAL is an evaluator of Python expressions and statements. Prior to version 1.0.6, if an attacker can control the input to […]

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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-2026-50142)

  • April 30, 2025
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 30 April 2025 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2026-50142 Related CVEs: CVE-2025-40215 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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How to Configure DKIM, SPF, and DMARC on RHEL 9 — step-by-step RHEL 9 tutorial on Progressive Robot

How to Configure DKIM, SPF, and DMARC on RHEL 9

  • April 29, 2025
  • Linux
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Email authentication through DKIM, SPF, and DMARC is no longer optional — major providers like Gmail and Outlook reject or junk messages from servers that lack these records. DKIM (DomainKeys Identified Mail) adds a cryptographic signature to outgoing messages, SPF (Sender Policy Framework) publishes a DNS record declaring which servers may send mail for your […]

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Debian 12 — easy-rsa — vulnerability — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — easy-rsa — vulnerability — patch and remediation guide

  • April 29, 2025
  • Linux
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🟢 Low   ⏱ 5–15 min  Last verified: 29 April 2025 Affected versions: Debian 12 (bookworm) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2024-13454 Upstream summary: Weak encryption algorithm in Easy-RSA version 3.0.5 through 3.1.7 allows a local attacker to more easily bruteforce the private CA key when created using OpenSSL […]

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Debian 11 — libhibernate-validator-java — multiple vulnerabilities (6 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — libhibernate-validator-java — multiple vulnerabilities (6 CVEs) — patch and remediation guide

  • April 29, 2025
  • Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 29 April 2025 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2014-3558 CVE-2017-7536 CVE-2019-10219 CVE-2020-10693 CVE-2023-1932 CVE-2025-35036 Upstream summary: ReflectionHelper (org.hibernate.validator.util.ReflectionHelper) in Hibernate Validator 4.1.0 before 4.2.1, 4.3.x before 4.3.2, and 5.x before 5.1.2 allows attackers to bypass Java […]

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Debian 12 — libcrypt-cbc-perl — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — libcrypt-cbc-perl — multiple vulnerabilities (2 CVEs) — patch and remediation guide

  • April 29, 2025
  • Linux
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🟢 Low   ⏱ 5–15 min  Last verified: 29 April 2025 Affected versions: Debian 12 (bookworm) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2006-0898 CVE-2025-2814 Upstream summary: Crypt::CBC Perl module 2.16 and earlier, when running in RandomIV mode, uses an initialization vector (IV) of 8 bytes, which results in weaker encryption […]

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Debian 12 — golang-github-lucas-clemente-quic-go — multiple vulnerabilities (7 CVEs) — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — golang-github-lucas-clemente-quic-go — multiple vulnerabilities (7 CVEs) — patch and remediation guide

  • April 29, 2025
  • Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 29 April 2025 Affected versions: Debian 12 (bookworm) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2022-30591 CVE-2023-49295 CVE-2024-22189 CVE-2024-53259 CVE-2025-29785 CVE-2025-59530 CVE-2025-64702 Upstream summary: quic-go through 0.27.0 allows remote attackers to cause a denial of service (CPU consumption) via a Slowloris variant in […]

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Ubuntu 16.04 — tiff — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

Ubuntu 16.04 — tiff — multiple vulnerabilities (20 CVEs) — patch and remediation guide

  • April 29, 2025
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 29 April 2025 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-8113-1 Related CVEs: CVE-2025-61144 CVE-2025-61143 CVE-2025-8961 CVE-2025-9165 CVE-2025-9900 CVE-2025-8177 CVE-2025-8851 CVE-2025-8534  +12 more Upstream summary: It was discovered that LibTIFF did not properly handle memory when processing certain images. An […]

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