Linux

Amazon Linux 2 — aide — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Amazon Linux 2

Amazon Linux 2 — aide — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Amazon Linux 2 📖 ~4 min read  •  Source: Amazon Linux advisory ALAS2-2022-1850 Related CVEs: CVE-2021-45417 CVE-2025-54409 Upstream summary: A heap-based buffer overflow vulnerability in the base64 functions of AIDE, an advanced intrusion detection system. An attacker could crash the program and […]

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Debian 13 — numpy — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — numpy — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 30 May 2026 Affected versions: Debian 13 (trixie) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2021-33430 CVE-2021-34141 CVE-2021-41495 CVE-2021-41496 Upstream summary: A Buffer Overflow vulnerability exists in NumPy 1.9.x in the PyArray_NewFromDescr_int function of ctors.c when specifying arrays of large dimensions (over 32) […]

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Rocky Linux 10 — libpng — multiple vulnerabilities (8 CVEs) — patch and remediation guide — diagnosis and fix on Rocky Linux 10

Rocky Linux 10 — libpng — multiple vulnerabilities (8 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Rocky Linux 10 📖 ~4 min read  •  Source: Rocky Linux RXSA RLSA-2026:3551 Related CVEs: CVE-2026-22695 CVE-2026-22801 CVE-2026-25646 CVE-2025-64720 CVE-2025-65018 CVE-2025-66293 CVE-2026-33416 CVE-2026-33636 Upstream summary: The libpng packages contain a library of functions for creating and manipulating Portable Network Graphics (PNG) image […]

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How to Secure MySQL 9 on Ubuntu 26.04 — step-by-step Linux tutorial on Progressive Robot

How to Secure MySQL 9 on Ubuntu 26.04

A default MySQL installation exposes several security risks — anonymous users, a test database, and root remote login. Beyond the initial security script, additional hardening significantly reduces your attack surface. This guide walks through a thorough MySQL 9 security hardening process on Ubuntu 26.04 LTS. Tested and valid on: Ubuntu 26.04 LTS Prerequisites Ubuntu 26.04 […]

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Debian 13 — htslib — multiple vulnerabilities (16 CVEs) — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — htslib — multiple vulnerabilities (16 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 30 May 2026 Affected versions: Debian 13 (trixie) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2017-1000206 CVE-2018-13843 CVE-2018-13844 CVE-2018-13845 CVE-2018-14329 CVE-2020-36403 CVE-2026-31962 CVE-2026-31963  +8 more Upstream summary: samtools htslib library version 1.4.0 and earlier is vulnerable to buffer overflow in the CRAM rANS […]

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Debian 12 — libcompress-raw-zlib-perl — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — libcompress-raw-zlib-perl — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 30 May 2026 Affected versions: Debian 12 (bookworm) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2009-1391 CVE-2026-3381 Upstream summary: Off-by-one error in the inflate function in Zlib.xs in Compress::Raw::Zlib Perl module before 2.017, as used in AMaViS, SpamAssassin, and possibly other products, allows […]

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Debian 13 — varnish — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — varnish — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 30 May 2026 Affected versions: Debian 13 (trixie) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2009-2936 CVE-2009-4488 CVE-2013-4090 CVE-2013-4484 CVE-2015-8852 CVE-2017-12425 CVE-2017-8807 CVE-2019-15892  +12 more Upstream summary: The Command Line Interface (aka Server CLI or administration interface) in the master process in the […]

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Common Problems 116022

Ubuntu 26.04 LTS – system time drift breaks TLS and auth flows – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 30 May 2026 Affected versions: Ubuntu 26.04 LTS 📖 ~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 Errors […]

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Debian 13 — ace — vulnerability — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — ace — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 30 May 2026 Affected versions: Debian 13 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2014-6311 Upstream summary: generate_doygen.pl in ace before 6.2.7+dfsg-2 creates predictable file names in the /tmp directory which allows attackers to gain elevated privileges. Table of contents Symptom & Impact […]

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openSUSE Tumbleweed — librec1 — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — librec1 — multiple vulnerabilities (2 CVEs) — 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-2025-65409 CVE-2021-46019 Upstream summary: A divide-by-zero in the encryption/decryption routines of GNU Recutils v1.9 allows attackers to cause a Denial of Service (DoS) via inputting […]

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CHAT