Security Hardening

Debian 13 — git-big-picture — vulnerability — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — git-big-picture — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 13 January 2026 Affected versions: Debian 13 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2021-3028 Upstream summary: git-big-picture before 1.0.0 mishandles ' characters in a branch name, leading to code execution. Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis […]

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Debian 13 — qutebrowser — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — qutebrowser — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 13 January 2026 Affected versions: Debian 13 (trixie) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2018-1000559 CVE-2018-10895 CVE-2020-11054 Upstream summary: qutebrowser version introduced in v0.11.0 (1179ee7a937fb31414d77d9970bac21095358449) contains a Cross Site Scripting (XSS) vulnerability in history command, qute://history page that can result in Via […]

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Debian 13 — ircd-irc2 — vulnerability — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — ircd-irc2 — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 13 January 2026 Affected versions: Debian 13 (trixie) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2003-0864 Upstream summary: Buffer overflow in m_join in channel.c for IRCnet IRCD 2.10.x to 2.10.3p3 allows remote attackers to cause a denial of service. Table of contents Symptom […]

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Oracle Linux 10 — grub2 — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 10

Oracle Linux 10 — grub2 — vulnerability — patch and remediation guide (ELSA-2026-4649)

🟡 Medium   ⏱ 10–30 min  Last verified: 13 January 2026 Affected versions: Oracle Linux 10 📖 ~4 min read  •  Source: ELSA advisory ELSA-2026-4649 Related CVEs: CVE-2025-61662 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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openSUSE Leap 15.6 — erlang26 — multiple vulnerabilities (6 CVEs) — patch and remediation guide — diagnosis and fix on openSUSE Leap 15.6

openSUSE Leap 15.6 — erlang26 — multiple vulnerabilities (6 CVEs) — 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 SUSE-SU-2025:1356-1 (see also SUSE bugzilla) Related CVEs: CVE-2025-30211 CVE-2022-31008 CVE-2021-22116 CVE-2023-46118 CVE-2021-32718 CVE-2021-32719 Upstream summary: Erlang/OTP is a set of libraries for the Erlang programming language. Prior to versions OTP-27.3.1, 26.2.5.10, […]

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Oracle Linux 9 — compat-openssl11 — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 9

Oracle Linux 9 — compat-openssl11 — vulnerability — patch and remediation guide (ELSA-2026-4472)

🟡 Medium   ⏱ 10–30 min  Last verified: 13 January 2026 Affected versions: Oracle Linux 9 📖 ~4 min read  •  Source: ELSA advisory ELSA-2026-4472 Related CVEs: CVE-2025-69419 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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SLES 16 — ffmpeg — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on SLES 16

SLES 16 — ffmpeg — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 13 January 2026 Affected versions: SLES 16 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2021:2919-1 (see also SUSE bugzilla) Related CVEs: CVE-2020-22046 CVE-2022-3964 CVE-2023-50010 CVE-2023-51793 CVE-2023-51794 CVE-2024-31578 CVE-2024-7055 CVE-2025-7700  +12 more Upstream summary: A Denial of Service vulnerability exists in FFmpeg 4.2 due to a memory […]

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

FreeBSD 15 — rubygem-bson — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 12 January 2026 Affected versions: FreeBSD 15 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: rubygem-bson — DoS and possible injection Related CVEs: CVE-2015-4412 Upstream summary: Phill MV reports: By submitting a specially crafted string to a service relying on the bson rubygem, an attacker […]

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Windows Server 2022 — KB5066740 — security update — patch and remediation guide — diagnosis and fix on Windows Server 2022

Windows Server 2022 — KB5066740 — security update — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Windows Server 2022 📖 ~4 min read  •  Source: Microsoft KB5066740 • MSRC update-guide entry Related CVEs: CVE-2025-55248 Affected components: Microsoft .NET Framework 3.5 AND 4.8.1 on Windows Server 2022, 23H2 Edition (Server Core installation) Microsoft summary: Inadequate encryption strength in .NET.NET […]

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FreeBSD 14 — rubygem-resolv — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 14

FreeBSD 14 — rubygem-resolv — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 12 January 2026 Affected versions: FreeBSD 14 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: rubygem-resolv — Possible denial of service Related CVEs: CVE-2025-24294 Upstream summary: Manu reports: The vulnerability is caused by an insufficient check on the length of a decompressed domain name within […]

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