Linux

Ubuntu 22.04 — libclamunrar — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 22.04

Ubuntu 22.04 — libclamunrar — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 5 May 2023 Affected versions: Ubuntu 22.04 (jammy) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-6569-1 Related CVEs: CVE-2022-30333 CVE-2023-40477 Upstream summary: it was discovered that libclamunrar incorrectly handled directories when extracting RAR archives. A remote attacker could possibly use this issue to overwrite arbitrary […]

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Oracle Linux 8 — yajl — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — yajl — vulnerability — patch and remediation guide (ELSA-2023-7057)

🟡 Medium   ⏱ 10–30 min  Last verified: 5 May 2023 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2023-7057 Related CVEs: CVE-2023-33460 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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Oracle Linux 8 — Unbreakable Enterprise kernel — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — Unbreakable Enterprise kernel — vulnerability — patch and remediation guide (ELSA-2023-12226)

🟠 High   ⏱ 15–60 min  Last verified: 5 May 2023 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2023-12226 Related CVEs: CVE-2022-2196 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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Oracle Linux 8 — olcne — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — olcne — vulnerability — patch and remediation guide (ELSA-2022-9588)

🟠 High   ⏱ 15–60 min  Last verified: 5 May 2023 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2022-9588 Related CVEs: CVE-2022-29228 CVE-2022-29224 CVE-2022-29226 CVE-2022-29227 CVE-2022-31045 CVE-2022-29225 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]

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Oracle Linux 9 — podman — security and stability fixes — required update — diagnosis and fix on Oracle Linux 9

Oracle Linux 9 — podman — security and stability fixes — required update (ELSA-2024-2548)

🟡 Medium   ⏱ 10–30 min  Last verified: 4 May 2023 Affected versions: Oracle Linux 9 📖 ~4 min read  •  Source: ELSA advisory ELSA-2024-2548 Related CVEs: CVE-2024-1753 CVE-2024-24786 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & […]

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Common Problems 118480

Ubuntu 16.04 USB device not recognized

🟡 Medium   ⏱ 5–30 min  Last verified: 4 May 2023 📖 ~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 & Cross-Refs References & Further […]

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Amazon Linux 2023 — kernel-livepatch-6.1.34-56.100 — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Amazon Linux 2023

Amazon Linux 2023 — kernel-livepatch-6.1.34-56.100 — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Amazon Linux 2023 📖 ~4 min read  •  Source: Amazon Linux advisory ALAS2023LIVEPATCH-2023-014 Related CVEs: CVE-2023-3609 CVE-2023-3776 Upstream summary: A use-after-free vulnerability in the Linux kernel's net/sched: cls_u32 component can be exploited to achieve local privilege escalation. If tcf_change_indev() fails, u32_set_parms() will […]

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Common Problems 117560

Ubuntu 20.04 LTS TLS Certificate Chain Validation Error

🟡 Medium   ⏱ 5–30 min  Last verified: 4 May 2023 📖 ~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 & Cross-Refs References & Further […]

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Debian 11 — grpc — multiple vulnerabilities (9 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — grpc — multiple vulnerabilities (9 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 4 May 2023 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2017-7860 CVE-2017-7861 CVE-2017-8359 CVE-2017-9431 CVE-2023-32732 CVE-2023-33953 CVE-2023-44487 CVE-2023-4785  +1 more Upstream summary: Google gRPC before 2017-02-22 has an out-of-bounds write caused by a heap-based buffer overflow related to […]

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