Common Problems

Common Problems 118543

Ubuntu 16.04 LTS – GRUB update fails and kernel entry is missing – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 7 November 2022 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 […]

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Common Problems 117052

Ubuntu 22.04 microphone not recording

🟡 Medium   ⏱ 5–30 min  Last verified: 7 November 2022 📖 ~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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IBM AIX 7.3 — CVE-2022-22485 — vulnerability — patch and remediation guide — diagnosis and fix on IBM AIX 7.3

IBM AIX 7.3 — CVE-2022-22485 — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 15–45 min  Last verified: 7 November 2022 Affected versions: IBM AIX 7.3 📖 ~4 min read  •  Source: NVD CVE-2022-22485, IBM Support Bulletin CVE: CVE-2022-22485 NVD summary: In some cases, an unsuccessful attempt to log into IBM Spectrum Protect Operations Center 8.1.0.000 through 8.1.14.000 does not cause the administrator's invalid sign-on […]

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Common Problems 111788

Windows Server 2022 — IIS ARR reverse proxy returning 502.3 timeout errors — Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 7 November 2022 Affected versions: Windows Server 2022 📖 ~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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Debian 11 — libxcrypt — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — libxcrypt — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 7 November 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2011-2483 Upstream summary: crypt_blowfish before 1.1, as used in PHP before 5.3.7 on certain platforms, PostgreSQL before 8.4.9, and other products, does not properly handle 8-bit characters, which […]

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Debian 11 — rust-libflate — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — rust-libflate — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 7 November 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2019-15552 Upstream summary: An issue was discovered in the libflate crate before 0.1.25 for Rust. MultiDecoder::read has a use-after-free, leading to arbitrary code execution. Table of contents Symptom […]

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Gentoo Linux — sys-apps/util-linux — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on Gentoo Linux

Gentoo Linux — sys-apps/util-linux — multiple vulnerabilities (4 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-202401-08 Related CVEs: CVE-2021-3995 CVE-2021-3996 CVE-2021-37600 CVE-2022-0563 Upstream summary: Multiple vulnerabilities have been discovered in util-linux. Please review the CVE identifiers referenced below for details. Table of contents Symptom & Impact Environment […]

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Debian 11 — yodl — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — yodl — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 7 November 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2016-10375 Upstream summary: Yodl before 3.07.01 has a Buffer Over-read in the queue_push function in queue/queuepush.c. Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis […]

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Debian 11 — libinput — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — libinput — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 7 November 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2022-1215 Upstream summary: A format string vulnerability was found in libinput Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution […]

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Gentoo Linux — app-misc/tmux — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Gentoo Linux

Gentoo Linux — app-misc/tmux — multiple vulnerabilities (2 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-202409-27 Related CVEs: CVE-2022-47016 CVE-2020-27347 Upstream summary: A null pointer dereference issue was discovered in function window_pane_set_event in window.c in which allows attackers to cause denial of service or other unspecified impacts. […]

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