chris

Alpine Linux edge — mbedtls — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Alpine Linux edge

Alpine Linux edge — mbedtls — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Alpine Linux edge / fixed in 3.6.6-r0 📖 ~4 min read  •  Source: Alpine secdb entry — mbedtls 3.6.6-r0 Related CVEs: CVE-2026-25833 CVE-2026-25834 CVE-2026-25835 CVE-2025-54764 CVE-2025-59438 CVE-2025-47917 CVE-2025-48965 CVE-2025-49087  +12 more Upstream summary: Alpine main repository for vedge ships mbedtls 3.6.6-r0 which […]

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FreeBSD 13 — gstreamer1-plugins-bad — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — gstreamer1-plugins-bad — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 27 July 2026 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: gstreamer1 — multiple vulnerabilities Related CVEs: CVE-2025-6663 CVE-2025-67326 CVE-2025-67327 CVE-2026-1940 CVE-2026-2920 CVE-2026-2921 CVE-2026-2922 CVE-2026-2923  +12 more Upstream summary: The GStreamer project reports multiple security vulnerabilities fixed in the 1.28.3 release: […]

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

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

🟠 High   ⏱ 15–60 min  Last verified: 27 July 2026 Affected versions: Debian 13 (trixie) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2017-18196 CVE-2018-3836 CVE-2018-7186 CVE-2018-7247 CVE-2018-7440 CVE-2018-7441 CVE-2018-7442 CVE-2020-36277  +5 more Upstream summary: Leptonica 1.74.4 constructs unintended pathnames (containing duplicated path components) when operating on files in /tmp subdirectories, […]

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

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

🟡 Medium   ⏱ 10–30 min  Last verified: 27 July 2026 Affected versions: Debian 13 (trixie) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2024-52308 CVE-2024-53858 CVE-2024-54132 CVE-2026-45803 Upstream summary: The GitHub CLI version 2.6.1 and earlier are vulnerable to remote code execution through a malicious codespace SSH server when using `gh […]

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openSUSE Tumbleweed — lxc — multiple vulnerabilities (9 CVEs) — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — lxc — multiple vulnerabilities (9 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE security advisory (see also SUSE bugzilla) Related CVEs: CVE-2026-39402 CVE-2022-47952 CVE-2015-1331 CVE-2015-1334 CVE-2015-1335 CVE-2016-8649 CVE-2017-5985 CVE-2018-6556  +1 more Upstream summary: lxc is a Linux container runtime. In the setuid helper lxc-user-nic, the delete […]

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Common Problems 116047

Ubuntu 26.04 LTS – OpenSSH login denied due to strict AllowUsers policy – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 27 July 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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FreeBSD 15 — openvpn-polarssl — multiple vulnerabilities (8 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 15

FreeBSD 15 — openvpn-polarssl — multiple vulnerabilities (8 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 27 July 2026 Affected versions: FreeBSD 15 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: OpenVPN — out-of-bounds write in legacy key-method 1 Related CVEs: CVE-2017-12166 CVE-2017-7478 CVE-2017-7479 CVE-2017-7508 CVE-2017-7512 CVE-2017-7520 CVE-2017-7521 CVE-2017-7522 Upstream summary: Steffan Karger reports: The bounds check in read_key() was performed […]

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FreeBSD 15 — rubygem-ruby-saml — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 15

FreeBSD 15 — rubygem-ruby-saml — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 27 July 2026 Affected versions: FreeBSD 15 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: ruby-saml — XML signature wrapping attack Related CVEs: CVE-2016-5697 Upstream summary: RubySec reports: ruby-saml prior to version 1.3.0 is vulnerable to an XML signature wrapping attack in the specific scenario […]

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FreeBSD 15 — optipng — multiple vulnerabilities (8 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 15

FreeBSD 15 — optipng — multiple vulnerabilities (8 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 27 July 2026 Affected versions: FreeBSD 15 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: PptiPNG — Global-buffer-overflow Related CVEs: CVE-2008-5101 CVE-2012-4432 CVE-2015-7801 CVE-2015-7802 CVE-2016-2191 CVE-2016-3981 CVE-2016-3982 CVE-2023-43907 Upstream summary: Frank-Z7 reports: Running optipng with the "-zm 3 -zc 1 -zw 256 -snip -out" configuration […]

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