Debian 12 Bookworm

pr cp 120138 r2

Debian 12: TLS handshake failure from outdated ciphers

đźź  High   ⏱ 5–30 min  Last verified: 20 May 2026 Affected versions: Debian 12 đź“– ~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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pr cp 120128 r2

Debian 12: OOM kills Java service under load

đź”´ Critical   ⏱ 5–30 min  Last verified: 20 May 2026 Affected versions: Debian 12 đź“– ~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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pr cp 120118 r2

Debian 12: High CPU from runaway cron task

🟡 Medium   ⏱ 5–30 min  Last verified: 20 May 2026 Affected versions: Debian 12 đź“– ~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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pr cp 120108 r2

Debian 12: Systemd unit enters restart loop

đźź  High   ⏱ 5–30 min  Last verified: 20 May 2026 Affected versions: Debian 12 đź“– ~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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pr cp 120099 r2

Debian 12: Certbot renewal failure due to challenge path

đźź  High   ⏱ 5–30 min  Last verified: 20 May 2026 Affected versions: Debian 12 đź“– ~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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pr cp 120089 r2

Debian 12: UFW blocks required application port

🟡 Medium   ⏱ 5–30 min  Last verified: 19 May 2026 Affected versions: Debian 12 đź“– ~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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pr cp 120079 r2

Debian 12: CIFS mount fails at boot

🟡 Medium   ⏱ 5–30 min  Last verified: 19 May 2026 Affected versions: Debian 12 đź“– ~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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pr cp 120069 r2

Debian 12: WireGuard tunnel up but no traffic

đźź  High   ⏱ 5–30 min  Last verified: 19 May 2026 Affected versions: Debian 12 đź“– ~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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pr cp 120059 r2

Debian 12: GRUB drops to rescue prompt

đź”´ Critical   ⏱ 5–30 min  Last verified: 19 May 2026 Affected versions: Debian 12 đź“– ~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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pr cp 120049 r2

Debian 12: Kernel panic on boot after DKMS module mismatch

đź”´ Critical   ⏱ 5–30 min  Last verified: 19 May 2026 Affected versions: Debian 12 đź“– ~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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