Common Problems

Alpine Linux edge — xorg-server — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Alpine Linux edge

Alpine Linux edge — xorg-server — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Alpine Linux edge / fixed in 21.1.9-r0 📖 ~4 min read  •  Source: Alpine secdb entry — xorg-server 21.1.9-r0 Related CVEs: CVE-2023-5367 CVE-2023-5380 CVE-2023-5574 CVE-2023-0494 CVE-2022-4283 CVE-2022-46340 CVE-2022-46341 CVE-2022-46342  +12 more Upstream summary: Alpine community repository for vedge ships xorg-server 21.1.9-r0 which […]

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Ubuntu 20.04 — fdkaac — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — fdkaac — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 3 May 2023 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-7660-1 Related CVEs: CVE-2023-34823 CVE-2022-37781 CVE-2022-36148 CVE-2023-34824 Upstream summary: It was discovered that fdkaac did not correctly handle certain input. If a user or automated system were tricked into opening […]

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Ubuntu 20.04 — exuberant-ctags — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — exuberant-ctags — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 3 May 2023 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5820-1 Related CVEs: CVE-2022-4515 Upstream summary: Lorenz Hipp discovered a flaw in exuberant-ctags handling of the tag filename command-line argument. A crafted tag filename specified in the command line or […]

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Alpine Linux edge — stb — multiple vulnerabilities (8 CVEs) — patch and remediation guide — diagnosis and fix on Alpine Linux edge

Alpine Linux edge — stb — multiple vulnerabilities (8 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Alpine Linux edge / fixed in 0_git20231012-r0 📖 ~4 min read  •  Source: Alpine secdb entry — stb 0_git20231012-r0 Related CVEs: CVE-2023-43898 CVE-2023-45661 CVE-2023-45662 CVE-2023-45663 CVE-2023-45664 CVE-2023-45666 CVE-2023-45667 CVE-2023-45675 Upstream summary: Alpine community repository for vedge ships stb 0_git20231012-r0 which addresses CVE-2023-43898. […]

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Ubuntu 20.04 — faad2 — multiple vulnerabilities (8 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — faad2 — multiple vulnerabilities (8 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 3 May 2023 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-6313-1 Related CVEs: CVE-2021-32272 CVE-2021-32273 CVE-2021-32274 CVE-2021-32276 CVE-2021-32277 CVE-2021-32278 CVE-2023-38857 CVE-2023-38858 Upstream summary: It was discovered that FAAD2 incorrectly handled certain inputs. If a user or an automated system were […]

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Oracle Linux 8 — .NET 7.0 — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — .NET 7.0 — vulnerability — patch and remediation guide (ELSA-2023-6247)

🟡 Medium   ⏱ 10–30 min  Last verified: 3 May 2023 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2023-6247 Related CVEs: CVE-2023-36799 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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Gentoo Linux — dev-lang/lua — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Gentoo Linux

Gentoo Linux — dev-lang/lua — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Gentoo Linux 📖 ~4 min read  •  Source: Gentoo GLSA GLSA-202305-23 Related CVEs: CVE-2014-5461 CVE-2021-44647 CVE-2022-28805 Upstream summary: Multiple vulnerabilities have been discovered in Lua. Please review the CVE identifiers referenced below for details. Table of contents Symptom & Impact Environment & […]

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

Oracle Linux 8 — microcode_ctl — vulnerability — patch and remediation guide (ELSA-2023-12723)

🟡 Medium   ⏱ 10–30 min  Last verified: 3 May 2023 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2023-12723 Related CVEs: CVE-2022-40982 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 9 — kernel security, bug fix, and — enhancement update — new behaviour and fixes — diagnosis and fix on Oracle Linux 9

Oracle Linux 9 — kernel security, bug fix, and — enhancement update — new behaviour and fixes (ELSA-2023-5069)

🟠 High   ⏱ 15–60 min  Last verified: 2 May 2023 Affected versions: Oracle Linux 9 📖 ~4 min read  •  Source: ELSA advisory ELSA-2023-5069 Related CVEs: CVE-2023-1637 CVE-2023-3776 CVE-2023-21102 CVE-2023-4147 CVE-2023-3390 CVE-2023-31248 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]

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Common Problems 121589

Debian 9 sudo Command Not Found or Permission Denied

🟠 High   ⏱ 5–30 min  Last verified: 2 May 2023 Affected versions: Debian 9 📖 ~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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CHAT