Linux

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

Debian 11 — libblockdev — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 30 November 2025 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2025-6019 Upstream summary: A Local Privilege Escalation (LPE) vulnerability was found in libblockdev. Generally, the "allow_active" setting in Polkit permits a physically present user to take certain actions […]

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Debian 12 — ruby-saml — multiple vulnerabilities (8 CVEs) — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — ruby-saml — multiple vulnerabilities (8 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 30 November 2025 Affected versions: Debian 12 (bookworm) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2015-20108 CVE-2016-5697 CVE-2017-11428 CVE-2024-45409 CVE-2025-25291 CVE-2025-25292 CVE-2025-25293 CVE-2025-54572 Upstream summary: xml_security.rb in the ruby-saml gem before 1.0.0 for Ruby allows XPath injection and code execution because prepared statements […]

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Debian 13 — sa-exim — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — sa-exim — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 30 November 2025 Affected versions: Debian 13 (trixie) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2006-1251 CVE-2019-19920 Upstream summary: Argument injection vulnerability in greylistclean.cron in sa-exim 4.2 allows remote attackers to delete arbitrary files via an email with a To field that contains […]

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

Debian 13 — fcheck — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 30 November 2025 Affected versions: Debian 13 (trixie) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2006-1753 Upstream summary: A cron job in fcheck before 2.7.59 allows local users to overwrite arbitrary files via a symlink attack on a temporary file. Table of contents […]

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

Debian 13 — tuxpaint — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 30 November 2025 Affected versions: Debian 13 (trixie) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2005-3340 Upstream summary: The tuxpaint-import.sh script in Tux Paint (tuxpaint) 0.9.14 and earlier creates temporary files insecurely, with unknown impact and attack vectors. Table of contents Symptom & […]

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Debian 12 — rtl-433 — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — rtl-433 — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 30 November 2025 Affected versions: Debian 12 (bookworm) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2022-25050 CVE-2022-25051 CVE-2022-27419 CVE-2025-34450 Upstream summary: rtl_433 21.12 was discovered to contain a stack overflow in the function somfy_iohc_decode(). This vulnerability allows attackers to cause a Denial of […]

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Ubuntu 20.04 — pam-u2f — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — pam-u2f — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 30 November 2025 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-7806-1 Related CVEs: CVE-2025-23013 Upstream summary: It was discovered that PAM/U2F could allow for authentication bypass in some configurations. An attacker could possibly use this issue to execute arbitrary code […]

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Ubuntu 20.04 — libreoffice — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — libreoffice — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 30 November 2025 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-7504-1 Related CVEs: CVE-2025-2866 CVE-2025-1080 CVE-2024-12425 CVE-2024-12426 CVE-2024-7788 CVE-2024-6472 CVE-2024-3044 CVE-2023-6185  +12 more Upstream summary: Juraj Šarinay discovered that LibreOffice incorrectly handled verifying PDF signatures. A remote attacker could possibly […]

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SLES 16 — libXtst6 — vulnerability — patch and remediation guide — diagnosis and fix on SLES 16

SLES 16 — libXtst6 — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 30 November 2025 Affected versions: SLES 16 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2013:1103-1 (see also SUSE bugzilla) Related CVEs: CVE-2013-2063 Upstream summary: Integer overflow in X.org libXtst 1.2.1 and earlier allows X servers to trigger allocation of insufficient memory and a buffer overflow via […]

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Oracle Linux 8 — firefox — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — firefox — vulnerability — patch and remediation guide (ELSA-2025-16260)

🟠 High   ⏱ 15–60 min  Last verified: 30 November 2025 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2025-16260 Related CVEs: CVE-2025-10527 CVE-2025-10528 CVE-2025-10529 CVE-2025-10532 CVE-2025-10533 CVE-2025-10536 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]

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