ubuntu

Ubuntu 24.04 — squid — multiple vulnerabilities (6 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 24.04

Ubuntu 24.04 — squid — multiple vulnerabilities (6 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 24 July 2026 Affected versions: Ubuntu 24.04 (noble) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-8157-1 Related CVEs: CVE-2026-33526 CVE-2026-33515 CVE-2026-32748 CVE-2025-62168 CVE-2025-59362 CVE-2024-37894 Upstream summary: It was discovered that Squid incorrectly handled certain ICP traffic. In environments where ICP support is enabled, a remote […]

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Ubuntu 24.04 — php-league-commonmark — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 24.04

Ubuntu 24.04 — php-league-commonmark — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 24 July 2026 Affected versions: Ubuntu 24.04 (noble) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-8194-1 Related CVEs: CVE-2026-33347 CVE-2025-46734 CVE-2026-30838 Upstream summary: It was discovered that league/commonmark did not properly restrict unsafe attributes when the Attributes extension was enabled. An attacker could possibly use […]

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Ubuntu 24.04 — openjdk-lts — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 24.04

Ubuntu 24.04 — openjdk-lts — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 24 July 2026 Affected versions: Ubuntu 24.04 (noble) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-8001-1 Related CVEs: CVE-2026-21933 CVE-2026-21932 CVE-2026-21945 CVE-2026-21925 CVE-2025-53066 CVE-2025-53057 CVE-2025-30761 CVE-2025-30754  +12 more Upstream summary: It was discovered that the RMI component of OpenJDK 11 would establish RMI TCP endpoint […]

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Ubuntu 20.04 — python-tornado — multiple vulnerabilities (7 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — python-tornado — multiple vulnerabilities (7 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 24 July 2026 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-8198-1 Related CVEs: CVE-2026-31958 CVE-2026-35536 CVE-2025-67724 CVE-2025-67725 CVE-2025-67726 CVE-2023-28370 CVE-2024-52804 Upstream summary: It was discovered that Tornado incorrectly handled parsing of large multipart request bodies. An attacker could possibly use […]

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Common Problems 116130

Ubuntu 26.04 LTS GRUB Rescue Prompt After Bootloader Update

🔴 Critical   ⏱ 5–30 min  Last verified: 23 July 2026 Affected versions: Ubuntu 26.04 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 116112

Ubuntu 26.04 LTS – CIFS mount fails with permission denied at boot – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 23 July 2026 Affected versions: Ubuntu 26.04 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 116065

Ubuntu 26.04 LTS – Apache2 fails start from invalid module config – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 23 July 2026 Affected versions: Ubuntu 26.04 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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Ubuntu 22.04 — openexr — multiple vulnerabilities (10 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 22.04

Ubuntu 22.04 — openexr — multiple vulnerabilities (10 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 23 July 2026 Affected versions: Ubuntu 22.04 (jammy) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-8259-1 Related CVEs: CVE-2026-27622 CVE-2026-34380 CVE-2026-34588 CVE-2021-20296 CVE-2021-23215 CVE-2021-26260 CVE-2021-3598 CVE-2021-3605  +2 more Upstream summary: Quang Luong discovered that OpenEXR incorrectly handled sample count accumulation when processing deep scan line […]

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Ubuntu 18.04 — nss — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — nss — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 23 July 2026 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-8071-2 Related CVEs: CVE-2026-2781 CVE-2022-3479 CVE-2023-0767 CVE-2022-22747 CVE-2022-34480 CVE-2020-25648 CVE-2021-43527 CVE-2020-12403  +12 more Upstream summary: USN-8071-1 fixed a vulnerability in nss. This update provides the corresponding fix for Ubuntu 14.04 […]

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Ubuntu 20.04 — linux — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

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

🟠 High   ⏱ 15–60 min  Last verified: 23 July 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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