Troubleshooting

Amazon Linux 2 — kernel-livepatch-5.10.253-251.1014 — vulnerability — patch and remediation guide — diagnosis and fix on Amazon Linux 2

Amazon Linux 2 — kernel-livepatch-5.10.253-251.1014 — vulnerability — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Amazon Linux 2 📖 ~4 min read  •  Source: Amazon Linux advisory ALAS2LIVEPATCH-2026-292 Related CVEs: CVE-2026-43284 Upstream summary: In the Linux kernel, the following vulnerability has been resolved: xfrm: esp: avoid in-place decrypt on shared skb frags "Dirty Frag" and other issues […]

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SLES 15 — coreutils — multiple vulnerabilities (6 CVEs) — patch and remediation guide — diagnosis and fix on SLES 15

SLES 15 — coreutils — multiple vulnerabilities (6 CVEs) — patch and remediation guide

🔴 Critical   ⏱ 15–90 min  Last verified: 13 May 2026 Affected versions: SLES 15 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2015:1637-1 (see also SUSE bugzilla) Related CVEs: CVE-2015-4041 CVE-2015-4042 CVE-2025-5278 CVE-2013-0221 CVE-2013-0222 CVE-2013-0223 Upstream summary: The keycompare_mb function in sort.c in sort in GNU Coreutils through 8.23 on 64-bit platforms performs a […]

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FreeBSD 12 — openvpn — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — openvpn — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 13 May 2026 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: OpenVPN — server DOS and data leak in TLS handshake vulnerabilities Related CVEs: CVE-2005-2531 CVE-2005-2532 CVE-2005-2533 CVE-2005-2534 CVE-2005-3393 CVE-2005-3409 CVE-2006-1629 CVE-2013-2061  +12 more Upstream summary: Gert Doering reports: [Security fixes […]

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FreeBSD 15 — subversion — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 15

FreeBSD 15 — subversion — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 13 May 2026 Affected versions: FreeBSD 15 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: Subversion — Multiple vulnerabilities in server code Related CVEs: CVE-2004-0397 CVE-2004-0749 CVE-2009-2411 CVE-2010-4539 CVE-2010-4644 CVE-2011-0715 CVE-2011-1752 CVE-2011-1783  +12 more Upstream summary: Subversion project reports: Subversion servers reveal 'copyfrom' paths that […]

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Common Problems 115967

Ubuntu 26.04 LTS – UFW blocks inbound service after rule reorder – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 13 May 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 — ntp — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 15

FreeBSD 15 — ntp — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 13 May 2026 Affected versions: FreeBSD 15 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: ntp — Multiple vulnerabilities Related CVEs: CVE-2009-0159 CVE-2009-1252 CVE-2013-5211 CVE-2014-9293 CVE-2014-9294 CVE-2014-9295 CVE-2014-9296 CVE-2015-1798  +12 more Upstream summary: nwtime.org reports: Three ntp vulnerabilities, Depending on configuration, may have little impact […]

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Fedora 42 — evince — vulnerability — patch and remediation guide — diagnosis and fix on Fedora 42

Fedora 42 — evince — vulnerability — patch and remediation guide

🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: Fedora 42 📖 ~4 min read  •  Source: Fedora update FEDORA-2026-49dc95b509 Related CVEs: CVE-2026-46529 Upstream summary: Fix command injection CVE-2026-46529 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]

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Debian 13 — tomcat10 — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — tomcat10 — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 13 May 2026 Affected versions: Debian 13 (trixie) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2023-24998 CVE-2023-28708 CVE-2023-28709 CVE-2023-34981 CVE-2023-41080 CVE-2023-42795 CVE-2023-44487 CVE-2023-45648  +12 more Upstream summary: Apache Commons FileUpload before 1.5 does not limit the number of request parts to be processed […]

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AlmaLinux 10 — corosync — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on AlmaLinux 10

AlmaLinux 10 — corosync — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 10 📖 ~4 min read  •  Source: AlmaLinux ALSA ALSA-2026:13644 Related CVEs: CVE-2026-35091 CVE-2026-35092 Upstream summary: The corosync packages provide the Corosync Cluster Engine and C APIs for AlmaLinux cluster software. Security Fix(es): * corosync: Corosync: Denial of Service and information […]

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How to Set Up Checkmk on SLES 16 — step-by-step SUSE Linux Enterprise 16 tutorial on Progressive Robot

How to Set Up Checkmk on SLES 16

Introduction This tutorial covers How to Set Up Checkmk on SLES 16 on SLES 16. SLES 16 (SUSE Linux Enterprise Server 16) is SUSE’s enterprise-grade Linux distribution. It uses the zypper package manager, AppArmor for mandatory access control, and systemctl for service management. Prerequisites Ensure your SLES 16 system is up to date: zypper refresh […]

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