Common Problems

Common Problems 115406

RHEL 7 systemctl Service Fails After Package Upgrade

🟠 High   ⏱ 5–30 min  Last verified: 14 April 2021 Affected versions: RHEL 7 📖 ~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
AlmaLinux 8 — driverctl — vulnerability — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — driverctl — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read  •  Source: AlmaLinux ALSA ALBA-2020:1752 Upstream summary: For detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section. Table of contents Symptom & Impact Environment & Reproduction Root Cause […]

Read more
FreeBSD 12 — puppetserver — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — puppetserver — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 14 April 2021 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: puppet — Unsafe HTTP Redirect Related CVEs: CVE-2018-1000180 CVE-2018-1000613 CVE-2020-7943 CVE-2021-27023 Upstream summary: Puppet reports: A flaw was discovered in Puppet Agent and Puppet Server that may result in a […]

Read more
AlmaLinux 8 — libfastjson — vulnerability — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — libfastjson — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read  •  Source: AlmaLinux ALSA ALSA-2023:6976 Related CVEs: CVE-2020-12762 Upstream summary: The libfastjson library provides essential JavaScript Object Notation (JSON) handling functions. The library enables users to construct JSON objects in C, output them as JSON-formatted strings, […]

Read more
SLES 12 — libexif12 — multiple vulnerabilities (19 CVEs) — patch and remediation guide — diagnosis and fix on SLES 12

SLES 12 — libexif12 — multiple vulnerabilities (19 CVEs) — patch and remediation guide

🔴 Critical   ⏱ 15–90 min  Last verified: 14 April 2021 Affected versions: SLES 12 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2020:1534-1 (see also SUSE bugzilla) Related CVEs: CVE-2020-13112 CVE-2020-0452 CVE-2019-9278 CVE-2020-13113 CVE-2020-0181 CVE-2020-0198 CVE-2020-0093 CVE-2020-12767  +11 more Upstream summary: An issue was discovered in libexif before 0.6.22. Several buffer over-reads in EXIF […]

Read more
Oracle Linux 8 — bind — security and stability fixes — required update — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — bind — security and stability fixes — required update (ELSA-2021-4384)

🟡 Medium   ⏱ 10–30 min  Last verified: 13 April 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2021-4384 Related CVEs: CVE-2021-25214 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance […]

Read more
Common Problems 117892

Ubuntu 18.04 LTS Stuck at GRUB Prompt After Upgrade

🟠 High   ⏱ 5–30 min  Last verified: 13 April 2021 Affected versions: 18.04 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
AlmaLinux 8 — rpm-mpi-hooks — vulnerability — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — rpm-mpi-hooks — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read  •  Source: AlmaLinux ALSA ALBA-2021:4412 Upstream summary: For detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section. Table of contents Symptom & Impact Environment & Reproduction Root Cause […]

Read more
AlmaLinux 8 — libcap-ng — vulnerability — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — libcap-ng — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read  •  Source: AlmaLinux ALSA ALEA-2021:4434 Upstream summary: For detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section. Table of contents Symptom & Impact Environment & Reproduction Root Cause […]

Read more
Ubuntu 18.04 — keystone — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — keystone — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 13 April 2021 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4480-1 Related CVEs: CVE-2020-12689 CVE-2020-12690 CVE-2020-12691 CVE-2020-12692 Upstream summary: It was discovered that OpenStack Keystone incorrectly handled EC2 credentials. An authenticated attacker with a limited scope could possibly create EC2 […]

Read more
CHAT