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AlmaLinux 8 — fetchmail — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — fetchmail — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read  •  Source: AlmaLinux ALSA ALSA-2022:1964 Related CVEs: CVE-2021-36386 CVE-2021-39272 Upstream summary: Fetchmail is a remote mail retrieval and forwarding utility intended for use over on-demand TCP/IP links, like SLIP or PPP connections. Fetchmail supports every remote-mail […]

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Debian 11 — gnome-font-viewer — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — gnome-font-viewer — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 21 October 2021 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2019-19308 Upstream summary: In text_to_glyphs in sushi-font-widget.c in gnome-font-viewer 3.34.0, there is a NULL pointer dereference while parsing a TTF font file that lacks a name section (due […]

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Python main function — step-by-step Python tutorial on Progressive Robot

Python main function

URL: https://www.progressiverobot.com/python-main-function/ Python main function is executed only when it's being executed as a python program. As you know, we can also [import](/community/tutorials/python-input-output-python-import) a python program as a module, in that case python main method should not execute. Python main function Main function is the entry point of any program. But python interpreter executes the […]

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

Debian 11 — svgsalamander — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 21 October 2021 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2017-5617 Upstream summary: The SVG Salamander (aka svgSalamander) library, when used in a web application, allows remote attackers to conduct server-side request forgery (SSRF) attacks via an xlink:href […]

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Debian 11 — bip — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — bip — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 21 October 2021 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2010-3071 CVE-2011-5268 CVE-2012-0806 CVE-2013-4550 Upstream summary: bip before 0.8.6 allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via an empty USER […]

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Gentoo Linux — dev-libs/libxslt — vulnerability — patch and remediation guide — diagnosis and fix on Gentoo Linux

Gentoo Linux — dev-libs/libxslt — vulnerability — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Gentoo Linux 📖 ~4 min read  •  Source: Gentoo GLSA GLSA-202310-23 Related CVEs: CVE-2021-30560 Upstream summary: Multiple vulnerabilities have been discovered in libxslt. Please review the CVE identifiers referenced below for details. Table of contents Symptom & Impact Environment & Reproduction Root […]

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SLES 12 — libZXing1 — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on SLES 12

SLES 12 — libZXing1 — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 21 October 2021 Affected versions: SLES 12 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2022:0157-1 (see also SUSE bugzilla) Related CVEs: CVE-2021-28021 CVE-2021-42716 CVE-2021-42715 Upstream summary: Buffer overflow vulnerability in function stbi__extend_receive in stb_image.h in stb 2.26 via a crafted JPEG file. Table of contents Symptom […]

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How to Configure MySQL Primary-Replica Replication on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Configure MySQL Primary-Replica Replication on RHEL 8

MySQL primary-replica replication allows one database server (the primary) to stream changes to one or more replica servers in near real-time, providing read scalability and a warm standby for disaster recovery. On RHEL 8, the setup involves editing MySQL configuration files on both servers, creating a dedicated replication user, and issuing a handful of SQL […]

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Oracle Linux 8 — curl — security and stability fixes — required update — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — curl — security and stability fixes — required update (ELSA-2023-3106)

🟡 Medium   ⏱ 10–30 min  Last verified: 20 October 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2023-3106 Related CVEs: CVE-2023-27535 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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