Security Hardening

Common Problems 114109

RHEL 10 – tuned profile reverts after reboot and performance degrades – Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 21 January 2026 Affected versions: RHEL 10.0 RHEL 10.1 📖 ~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 […]

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openSUSE Leap 15.6 — wireshark — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on openSUSE Leap 15.6

openSUSE Leap 15.6 — wireshark — multiple vulnerabilities (20 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-2025:0754-1 (see also SUSE bugzilla) Related CVEs: CVE-2025-1492 CVE-2024-11595 CVE-2024-11596 CVE-2024-0207 CVE-2024-0210 CVE-2024-0211 CVE-2024-2955 CVE-2026-0959  +12 more Upstream summary: Bundle Protocol and CBOR dissector crashes in Wireshark 4.4.0 to 4.4.3 and […]

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Debian 12 — libcrypt-argon2-perl — vulnerability — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — libcrypt-argon2-perl — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 21 January 2026 Affected versions: Debian 12 (bookworm) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2026-8463 Upstream summary: Crypt::Argon2 versions from 0.017 before 0.031 for Perl perform a heap out-of-bounds read in argon2_verify on empty encoded input. The auto-detect form of argon2_verify passes […]

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

Debian 13 — xtrlock — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 21 January 2026 Affected versions: Debian 13 (trixie) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2005-0079 CVE-2016-10894 Upstream summary: Buffer overflow in xtrlock 2.0 allows local users to cause a denial of service (application crash) and hijack the desktop session. Table of contents […]

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Windows Server 2016 — KB5078885 — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Windows Server 2016

Windows Server 2016 — KB5078885 — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Windows Server 2016 📖 ~4 min read  •  Source: Microsoft KB5078885 • MSRC update-guide entry Related CVEs: CVE-2026-23668 CVE-2026-23669 CVE-2026-23671 CVE-2026-23672 CVE-2026-23673 CVE-2026-24285 CVE-2026-24289 CVE-2026-24291  +12 more Affected components: Windows Server 2016 Windows Server 2016 (Server Core installation) Microsoft summary: Concurrent execution […]

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Ubuntu 20.04 — libtasn1-6 — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — libtasn1-6 — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 21 January 2026 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-7954-2 Related CVEs: CVE-2021-46848 CVE-2025-13151 CVE-2024-12133 Upstream summary: USN-7954-1 fixed vulnerabilities in Libtasn1. This update provides the corresponding updates for Ubuntu 14.04 LTS, Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, and […]

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Ubuntu 22.04 — haproxy — multiple vulnerabilities (7 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 22.04

Ubuntu 22.04 — haproxy — multiple vulnerabilities (7 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 21 January 2026 Affected versions: Ubuntu 22.04 (jammy) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-7805-1 Related CVEs: CVE-2025-11230 CVE-2025-32464 CVE-2023-45539 CVE-2023-40225 CVE-2023-0836 CVE-2023-25725 CVE-2023-0056 Upstream summary: Oula Kivalo discovered that HAProxy incorrectly handled parsing certain json numbers. A remote attacker could possibly use this […]

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Ubuntu 18.04 — git-lfs — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — git-lfs — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 21 January 2026 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-7977-1 Related CVEs: CVE-2024-53263 CVE-2025-26625 Upstream summary: Ryota K discovered that Git LFS may leak login credentials in certain instances due to failing to check for URL-encoded characters. An attacker […]

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Ubuntu 20.04 — docker.io-app — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — docker.io-app — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 21 January 2026 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-8230-1 Related CVEs: CVE-2026-33748 CVE-2026-33747 CVE-2024-29018 CVE-2024-41110 Upstream summary: It was discovered that BuildKit, contained within Docker, incorrectly handled file path validation when processing frontend API messages. An attacker could […]

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openSUSE Leap 15.6 — vim — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on openSUSE Leap 15.6

openSUSE Leap 15.6 — vim — multiple vulnerabilities (20 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-2026:1347-1 (see also SUSE bugzilla) Related CVEs: CVE-2026-34714 CVE-2026-34982 CVE-2026-33412 CVE-2026-28418 CVE-2026-28419 CVE-2026-28421 CVE-2026-26269 CVE-2026-28417  +12 more Upstream summary: Vim before 9.2.0272 allows code execution that happens immediately upon opening a […]

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CHAT