Common Problems

Debian 11 — powerline-gitstatus — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — powerline-gitstatus — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 21 February 2023 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2022-42906 Upstream summary: powerline-gitstatus (aka Powerline Gitstatus) before 1.3.2 allows arbitrary code execution. git repositories can contain per-repository configuration that changes the behavior of git, including running arbitrary […]

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Ubuntu 16.04 — quagga — multiple vulnerabilities (11 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

Ubuntu 16.04 — quagga — multiple vulnerabilities (11 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 21 February 2023 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-6432-1 Related CVEs: CVE-2023-41358 CVE-2023-41360 CVE-2018-5378 CVE-2018-5379 CVE-2018-5380 CVE-2018-5381 CVE-2017-16227 CVE-2017-5495  +3 more Upstream summary: It was discovered that the Quagga BGP daemon did not properly check the attribute length […]

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Ubuntu 22.04 — packagekit — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 22.04

Ubuntu 22.04 — packagekit — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 21 February 2023 Affected versions: Ubuntu 22.04 (jammy) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-8195-1 Related CVEs: https://launchpad.net/bugs/2149908 Upstream summary: It was discovered that PackageKit incorrectly handled certain transactions. A local attacker could use this issue to install arbitrary packages as root, possibly resulting […]

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CentOS Stream 9 — python3.11-cryptography — vulnerability — patch and remediation guide — diagnosis and fix on CentOS Stream 9

CentOS Stream 9 — python3.11-cryptography — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 21 February 2023 Affected versions: CentOS Stream 9 📖 ~4 min read  •  Source: AlmaLinux/RHEL advisory ALSA-2024:2337 Related CVEs: CVE-2023-49083 Upstream summary: The python-cryptography packages contain a Python Cryptographic Authority's (PyCA's) cryptography library, which provides cryptographic primitives and recipes to Python developers. Security Fix(es): * python-cryptography: NULL-dereference […]

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Windows Server 2019 — KB5026409 — multiple vulnerabilities (14 CVEs) — patch and remediation guide — diagnosis and fix on Windows Server 2019

Windows Server 2019 — KB5026409 — multiple vulnerabilities (14 CVEs) — patch and remediation guide

🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: Windows Server 2019 📖 ~4 min read  •  Source: Microsoft KB5026409 • MSRC update-guide entry Related CVEs: CVE-2023-28283 CVE-2023-24941 CVE-2023-24903 CVE-2023-24943 CVE-2023-29325 CVE-2023-28251 CVE-2023-24939 CVE-2023-24900  +6 more Affected components: Windows Server 2019 (Server Core installation) Table of contents Symptom & Impact Environment […]

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Oracle Linux 9 — .NET 9.0 security, bug fix, and — enhancement update — new behaviour and fixes — diagnosis and fix on Oracle Linux 9

Oracle Linux 9 — .NET 9.0 security, bug fix, and — enhancement update — new behaviour and fixes

🟠 High   ⏱ 15–60 min  Last verified: 20 February 2023 Affected versions: Oracle Linux 9 📖 ~4 min read  •  Source: ELSA advisory ELSA-2025-2668 Related CVEs: CVE-2025-24070 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance […]

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Common Problems 117487

Ubuntu 20.04 LTS – systemd service enters crash loop after package update – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 20 February 2023 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 […]

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Amazon Linux 2 — kernel-livepatch-4.14.294-220.533 — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on Amazon Linux 2

Amazon Linux 2 — kernel-livepatch-4.14.294-220.533 — multiple vulnerabilities (4 CVEs) — 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-2023-095 Related CVEs: CVE-2022-3524 CVE-2022-3564 CVE-2022-3621 CVE-2022-3649 Upstream summary: A vulnerability was found in Linux Kernel. It has been declared as problematic. Affected by this vulnerability is the function ipv6_renew_options […]

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CHAT