Security Hardening

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

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

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Alpine Linux edge / fixed in 9.20.9-r0 📖 ~4 min read  •  Source: Alpine secdb entry — bind 9.20.9-r0 Related CVEs: CVE-2025-40775 CVE-2026-3039 CVE-2026-3592 CVE-2026-3593 CVE-2026-5946 CVE-2026-5947 CVE-2026-5950 CVE-2026-1519  +12 more Upstream summary: Alpine main repository for vedge ships bind 9.20.9-r0 which […]

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Common Problems 113935

RHEL 10 – journalctl logs rotate too aggressively and lose incident evidence

🟡 Medium   ⏱ 5–30 min  Last verified: 20 January 2026 Affected versions: RHEL 10 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 & […]

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

Debian 11 — haveged — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 20 January 2026 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2026-41054 Upstream summary: In `src/havegecmd.c`, the `socket_handler` function performs a credential check on the abstract UNIX socket (`\0/sys/entropy/haveged`). However, while it detects if the connecting user is not […]

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Rocky Linux 8 — util-linux — vulnerability — patch and remediation guide — diagnosis and fix on Rocky Linux 8

Rocky Linux 8 — util-linux — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Rocky Linux 8 📖 ~4 min read  •  Source: Rocky Linux RXSA RLSA-2026:1852 Related CVEs: CVE-2025-14104 Upstream summary: The util-linux packages contain a large variety of low-level system utilities that are necessary for a Linux system to function. Among others, these include […]

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

Debian 11 — smartdns — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 20 January 2026 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2026-1425 Upstream summary: A security flaw has been discovered in pymumu SmartDNS up to 47.1. This vulnerability affects the function _dns_decode_rr_head/_dns_decode_SVCB_HTTPS of the file src/dns.c of the component […]

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Debian 13 — gnome-power-manager — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — gnome-power-manager — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 20 January 2026 Affected versions: Debian 13 (trixie) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2006-7240 CVE-2009-4997 Upstream summary: gnome-power-manager 2.14.0 does not properly implement the lock_on_suspend and lock_on_hibernate settings for locking the screen when the suspend or hibernate button is pressed, which […]

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openSUSE Tumbleweed — thrift — multiple vulnerabilities (6 CVEs) — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — thrift — multiple vulnerabilities (6 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE security advisory (see also SUSE bugzilla) Related CVEs: CVE-2026-41604 CVE-2026-41605 CVE-2026-41636 CVE-2026-41606 CVE-2026-41607 CVE-2020-13949 Upstream summary: Out-of-bounds Read vulnerability in Apache Thrift. This issue affects Apache Thrift: before 0.23.0. Users are recommended to […]

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

Debian 13 — coccinelle — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 20 January 2026 Affected versions: Debian 13 (trixie) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2009-1753 Upstream summary: Coccinelle 0.1.7 allows local users to overwrite arbitrary files via a symlink attack on an unspecified "result file." Table of contents Symptom & Impact Environment […]

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

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

🟡 Medium   ⏱ 10–30 min  Last verified: 20 January 2026 Affected versions: Debian 13 (trixie) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2018-14938 CVE-2018-18409 CVE-2026-25061 Upstream summary: An issue was discovered in wifipcap/wifipcap.cpp in TCPFLOW through 1.5.0-alpha. There is an integer overflow in the function handle_prism during caplen processing. If […]

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Windows Server 2019 — KB5051989 — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Windows Server 2019

Windows Server 2019 — KB5051989 — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: Windows Server 2019 📖 ~4 min read  •  Source: Microsoft KB5051989 • MSRC update-guide entry Related CVEs: CVE-2025-21376 CVE-2025-26634 CVE-2025-21351 CVE-2025-21352 CVE-2025-21368 CVE-2025-21369 CVE-2025-21375 CVE-2025-21391  +12 more Affected components: Windows Server 2019 (Server Core installation) Table of contents Symptom & Impact Environment […]

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CHAT