Linux

Common Problems 116138

Ubuntu 26.04 LTS – cron jobs skip execution due to wrong timezone and PATH – Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 20 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 […]

Read more
Common Problems 120196

Debian 12 sudo Access Lost Due to sudoers Syntax Error

🔴 Critical   ⏱ 5–30 min  Last verified: 20 May 2026 Affected versions: Debian 12 📖 ~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 & […]

Read more
Common Problems 118628

Ubuntu 16.04 LTS – apt repositories moved to old-releases after EOL – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 20 May 2026 Affected versions: Ubuntu 16.04 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 […]

Read more
SLES 15 — python2-Jinja2 — multiple vulnerabilities (7 CVEs) — patch and remediation guide — diagnosis and fix on SLES 15

SLES 15 — python2-Jinja2 — multiple vulnerabilities (7 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: SLES 15 📖 ~4 min read  •  Source: SUSE advisory RHSA-2025:0308 (see also SUSE bugzilla) Related CVEs: CVE-2024-56326 CVE-2016-10745 CVE-2019-10906 CVE-2019-8341 CVE-2020-28493 CVE-2025-27516 CVE-2014-0012 Upstream summary: Jinja is an extensible templating engine. Prior to 3.1.5, An oversight in how the Jinja sandboxed […]

Read more
CentOS Stream 9 — galera — multiple vulnerabilities (17 CVEs) — patch and remediation guide — diagnosis and fix on CentOS Stream 9

CentOS Stream 9 — galera — multiple vulnerabilities (17 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: CentOS Stream 9 📖 ~4 min read  •  Source: AlmaLinux/RHEL advisory ALSA-2026:0247 Related CVEs: CVE-2023-52969 CVE-2023-52970 CVE-2023-52971 CVE-2025-13699 CVE-2025-21490 CVE-2025-30693 CVE-2025-30722 CVE-2022-32081  +9 more Upstream summary: MariaDB is a multi-user, multi-threaded SQL database server that is binary compatible with MySQL. Security Fix(es): […]

Read more
Common Problems 117131

Ubuntu 22.04 LTS – Livepatch status stuck and kernel not patched – Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 20 May 2026 Affected versions: Ubuntu 22.04 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 […]

Read more
Oracle Linux 9 — 389-ds-base — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 9

Oracle Linux 9 — 389-ds-base — vulnerability — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Oracle Linux 9 📖 ~4 min read  •  Source: ELSA advisory ELSA-2024-3837 Related CVEs: CVE-2024-3657 CVE-2024-2199 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & […]

Read more
Common Problems 117630

Ubuntu 20.04 LTS – DKMS module build fails after kernel update and drivers stop loading – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 20 May 2026 Affected versions: Ubuntu 20.04 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 […]

Read more
Debian 11 — hdf5 — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — hdf5 — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2016-4330 CVE-2016-4331 CVE-2016-4332 CVE-2016-4333 CVE-2017-17505 CVE-2017-17506 CVE-2017-17507 CVE-2017-17508  +12 more Upstream summary: In the HDF5 1.8.16 library's failure to check if the number of dimensions for an array […]

Read more
SLES 16 — libcairo2 — multiple vulnerabilities (5 CVEs) — patch and remediation guide — diagnosis and fix on SLES 16

SLES 16 — libcairo2 — multiple vulnerabilities (5 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: SLES 16 📖 ~4 min read  •  Source: SUSE advisory SUSE-SR:2006:007 (see also SUSE bugzilla) Related CVEs: CVE-2006-0528 CVE-2016-9082 CVE-2017-7475 CVE-2017-9814 CVE-2025-50422 Upstream summary: The cairo library (libcairo), as used in GNOME Evolution and possibly other products, allows remote attackers to cause […]

Read more
CHAT