Common Problems

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Oracle Linux 9 – Common Problem 012 – Diagnosis and Fix

🟡 Medium   ⏱ 5–30 min  Last verified: 19 May 2026 Affected versions: Oracle Linux 9 📖 ~3 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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Ubuntu 22.04 — linux-gcp — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 22.04

Ubuntu 22.04 — linux-gcp — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Ubuntu 22.04 (jammy) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-8279-1 Related CVEs: CVE-2024-35862 CVE-2024-50060 CVE-2026-23274 CVE-2026-23351 CVE-2026-31419 CVE-2026-31431 CVE-2026-31504 CVE-2026-31533  +12 more Upstream summary: It was discovered that the Linux kernel algif_aead module did not properly handle in-place cryptographic […]

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Oracle Linux 8 – Common Problem 012 – Diagnosis and Fix

🟡 Medium   ⏱ 5–30 min  Last verified: 19 May 2026 Affected versions: Oracle Linux 8 📖 ~3 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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Ubuntu 20.04 — linux-gcp — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — linux-gcp — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-8273-1 Related CVEs: CVE-2024-50304 CVE-2026-23112 CVE-2026-23209 CVE-2026-31431 CVE-2026-31504 CVE-2026-31533 CVE-2026-43033 CVE-2026-43077  +12 more Upstream summary: Several security issues were discovered in the Linux kernel. An attacker could possibly use these […]

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SLES 16 — xwayland — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on SLES 16

SLES 16 — xwayland — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: SLES 16 📖 ~4 min read  •  Source: SUSE advisory RHSA-2026:10739 (see also SUSE bugzilla) Related CVEs: CVE-2026-34001 CVE-2025-62229 CVE-2025-62230 CVE-2025-62231 CVE-2021-3472 CVE-2021-4008 CVE-2021-4009 CVE-2021-4010  +12 more Upstream summary: A flaw was found in the X.Org X server. This use-after-free vulnerability occurs […]

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Ubuntu 18.04 — linux-gcp-fips — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — linux-gcp-fips — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-8281-1 Related CVEs: CVE-2026-31431 CVE-2026-31504 CVE-2026-43033 CVE-2026-43077 CVE-2026-43078 CVE-2024-27388 CVE-2024-46816 CVE-2024-49938  +12 more Upstream summary: It was discovered that the Linux kernel algif_aead module did not properly handle in-place cryptographic […]

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SLES 15 — qemu — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on SLES 15

SLES 15 — qemu — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: SLES 15 📖 ~4 min read  •  Source: SUSE security advisory (see also SUSE bugzilla) Related CVEs: CVE-2017-15118 CVE-2025-11234 CVE-2024-4467 CVE-2024-7409 CVE-2024-3446 CVE-2023-1544 CVE-2024-24474 CVE-2024-26327  +12 more Upstream summary: A stack-based buffer overflow vulnerability was found in NBD server implementation in qemu […]

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AppArmor Denials Break Application Behavior

🟡 Medium   ⏱ 5–30 min  Last verified: 19 May 2026 📖 ~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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SLES 12 — libgio — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on SLES 12

SLES 12 — libgio — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: SLES 12 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2026:0355-1 (see also SUSE bugzilla) Related CVEs: CVE-2026-1484 CVE-2026-1489 CVE-2025-13601 CVE-2025-14087 CVE-2024-52533 CVE-2019-12450 CVE-2019-13012 CVE-2025-14512  +12 more Upstream summary: A flaw was found in the GLib Base64 encoding routine when processing very […]

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Apache2 Fails to Start Because Port 80 Is Already in Use on Ubuntu 14.04

🟡 Medium   ⏱ 5–30 min  Last verified: 19 May 2026 📖 ~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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