Linux

Debian 13 — opensmtpd — multiple vulnerabilities (9 CVEs) — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — opensmtpd — multiple vulnerabilities (9 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 9 November 2025 Affected versions: Debian 13 (trixie) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2013-2125 CVE-2015-7687 CVE-2020-35679 CVE-2020-35680 CVE-2020-7247 CVE-2020-8793 CVE-2020-8794 CVE-2023-29323  +1 more Upstream summary: OpenSMTPD before 5.3.2 does not properly handle SSL sessions, which allows remote attackers to cause a […]

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openSUSE Tumbleweed — k9s — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — k9s — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2025:20516-1 (see also SUSE bugzilla) Related CVEs: CVE-2025-53547 CVE-2024-26147 CVE-2023-25165 Upstream summary: Helm is a package manager for Charts for Kubernetes. Prior to 3.18.4, a specially crafted Chart.yaml file along with a […]

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How to Set Up Varnish Cache as a Reverse Proxy on RHEL 9 — step-by-step RHEL 9 tutorial on Progressive Robot

How to Set Up Varnish Cache as a Reverse Proxy on RHEL 9

Varnish Cache is a high-performance HTTP reverse proxy designed specifically for caching. Unlike Nginx FastCGI cache which caches PHP output files on disk, Varnish stores cached objects entirely in RAM and can serve tens of thousands of requests per second from memory. Varnish operates in front of your web server: it listens on port 80 […]

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Ubuntu 24.04 — jinja2 — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 24.04

Ubuntu 24.04 — jinja2 — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 9 November 2025 Affected versions: Ubuntu 24.04 (noble) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-7343-1 Related CVEs: CVE-2024-56201 CVE-2024-56326 CVE-2025-27516 CVE-2024-34064 Upstream summary: Rafal Krupinski discovered that Jinja2 did not properly restrict the execution of code in situations where templates are used maliciously. An […]

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openSUSE Leap 15.6 — orc — vulnerability — patch and remediation guide — diagnosis and fix on openSUSE Leap 15.6

openSUSE Leap 15.6 — orc — vulnerability — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: openSUSE Leap 15.6 📖 ~4 min read  •  Source: SUSE advisory RHSA-2024:6184 (see also SUSE bugzilla) Related CVEs: CVE-2024-40897 Upstream summary: Stack-based buffer overflow vulnerability exists in orcparse.c of ORC versions prior to 0.4.39. If a developer is tricked to process a […]

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SLES 16 — libxkbcommon0 — multiple vulnerabilities (7 CVEs) — patch and remediation guide — diagnosis and fix on SLES 16

SLES 16 — libxkbcommon0 — multiple vulnerabilities (7 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 9 November 2025 Affected versions: SLES 16 📖 ~4 min read  •  Source: SUSE advisory SUSE-CU-2021:232-1 (see also SUSE bugzilla) Related CVEs: CVE-2018-15854 CVE-2018-15855 CVE-2018-15856 CVE-2018-15857 CVE-2018-15858 CVE-2018-15862 CVE-2018-15864 Upstream summary: Unchecked NULL pointer usage in xkbcommon before 0.8.1 could be used by local attackers to crash […]

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How to Configure Nginx FastCGI Caching on RHEL 9 — step-by-step RHEL 9 tutorial on Progressive Robot

How to Configure Nginx FastCGI Caching on RHEL 9

Nginx FastCGI caching stores the output of PHP-FPM (or any FastCGI backend) responses as files on disk and serves them directly without hitting PHP for subsequent requests. For a WordPress site or PHP application serving the same page to many users, this can reduce PHP execution from 200ms to under 1ms and cut server load […]

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SLES 16 — libQt6Nfc6 — vulnerability — patch and remediation guide — diagnosis and fix on SLES 16

SLES 16 — libQt6Nfc6 — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 9 November 2025 Affected versions: SLES 16 📖 ~4 min read  •  Source: SUSE advisory openSUSE-SU-2025:0033-1 (see also SUSE bugzilla) Related CVEs: CVE-2025-23050 Upstream summary: QLowEnergyController in Qt before 6.8.2 mishandles malformed Bluetooth ATT commands, leading to an out-of-bounds read (or division by zero). This is fixed […]

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Oracle Linux 10 — Unbreakable Enterprise kernel — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 10

Oracle Linux 10 — Unbreakable Enterprise kernel — vulnerability — patch and remediation guide (ELSA-2025-20480)

🟠 High   ⏱ 15–60 min  Last verified: 9 November 2025 Affected versions: Oracle Linux 10 📖 ~4 min read  •  Source: ELSA advisory ELSA-2025-20480 Related CVEs: CVE-2012-3430 CVE-2015-6937 CVE-2016-5244 CVE-2018-12928 CVE-2018-5332 CVE-2018-5333 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]

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Oracle Linux 8 — perl-FCGI:0.78 — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — perl-FCGI:0.78 — vulnerability — patch and remediation guide (ELSA-2025-8696)

🟠 High   ⏱ 15–60 min  Last verified: 9 November 2025 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2025-8696 Related CVEs: CVE-2025-40907 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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