ubuntu

Ubuntu 18.04 — pjproject — multiple vulnerabilities (14 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — pjproject — multiple vulnerabilities (14 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 3 June 2026 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-8122-1 Related CVEs: CVE-2021-43302 CVE-2026-25994 CVE-2021-43300 CVE-2021-43301 CVE-2021-32686 CVE-2021-43299 CVE-2018-1000099 CVE-2021-37706  +6 more Upstream summary: Youngsung Kim discovered that PJSIP did not properly parse numeric header fields in SIP messages. […]

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Ubuntu 18.04 — python-cryptography — multiple vulnerabilities (5 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — python-cryptography — multiple vulnerabilities (5 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 3 June 2026 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-8087-3 Related CVEs: CVE-2026-26007 CVE-2023-50782 CVE-2024-26130 CVE-2020-25659 CVE-2018-10903 Upstream summary: USN-8087-1 fixed a vulnerability in python-cryptography. This update provides the corresponding update to Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, and […]

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Ubuntu 22.04 — mupdf — multiple vulnerabilities (6 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 22.04

Ubuntu 22.04 — mupdf — multiple vulnerabilities (6 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 3 June 2026 Affected versions: Ubuntu 22.04 (jammy) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-7888-1 Related CVEs: CVE-2023-51106 CVE-2023-51103 CVE-2024-46657 CVE-2025-46206 CVE-2023-51104 CVE-2023-51105 Upstream summary: It was discovered that MuPDF could be made to divide by zero. An attacker could possibly use this issue […]

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Common Problems 116010

Ubuntu 26.04 LTS UFW and nftables Policy Conflict

🟠 High   ⏱ 5–30 min  Last verified: 2 June 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 — qemu — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 22.04

Ubuntu 22.04 — qemu — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 2 June 2026 Affected versions: Ubuntu 22.04 (jammy) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-8161-1 Related CVEs: CVE-2026-3195 CVE-2024-6519 CVE-2026-3842 CVE-2026-3196 CVE-2026-2243 CVE-2026-0665 CVE-2025-11234 CVE-2025-14876  +12 more Upstream summary: It was discovered that the LSI53C895A SCSI Host Bus Adapter implementation of QEMU incorrectly handled […]

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Ubuntu 14.04 — systemd — multiple vulnerabilities (7 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 14.04

Ubuntu 14.04 — systemd — multiple vulnerabilities (7 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 2 June 2026 Affected versions: Ubuntu 14.04 (trusty) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-8119-2 Related CVEs: CVE-2026-29111 CVE-2022-3821 CVE-2022-4415 CVE-2022-45873 CVE-2019-3842 CVE-2017-15908 CVE-2018-1049 Upstream summary: USN-8119-1 fixed vulnerabilities in systemd. This update provides the corresponding updates for Ubuntu 14.04 LTS, Ubuntu 16.04 LTS, […]

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Ubuntu 22.04 — postgresql-14 — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 22.04

Ubuntu 22.04 — postgresql-14 — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 2 June 2026 Affected versions: Ubuntu 22.04 (jammy) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-8294-1 Related CVEs: CVE-2026-6638 CVE-2026-6476 CVE-2026-6477 CVE-2026-6479 CVE-2026-6475 CVE-2026-6474 CVE-2026-6478 CVE-2026-6472  +12 more Upstream summary: It was discovered that PostgreSQL did not correctly enforce authorization for CREATE TYPE. An attacker […]

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How to Set Up a Next.js 15 Application on Ubuntu 26.04 — step-by-step Linux tutorial on Progressive Robot

How to Install Node.js 22 LTS on Ubuntu 26.04

Node.js 22 LTS is the current long-term support release of the JavaScript runtime. It includes performance improvements from V8 13, the stable fetch API, native TypeScript type-stripping support, and improved ESM compatibility. This guide installs Node.js 22 LTS on Ubuntu 26.04 LTS. Tested and valid on: Ubuntu 26.04 LTS Prerequisites Ubuntu 26.04 LTS server or […]

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Common Problems 115900

Ubuntu 26.04 LTS Repository Release File Not Valid Yet

🟠 High   ⏱ 5–30 min  Last verified: 1 June 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 24.04 — python-django — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 24.04

Ubuntu 24.04 — python-django — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 1 June 2026 Affected versions: Ubuntu 24.04 (noble) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-8232-1 Related CVEs: CVE-2026-6907 CVE-2026-5766 CVE-2026-35192 CVE-2026-4277 CVE-2026-33034 CVE-2026-33033 CVE-2026-3902 CVE-2026-4292  +12 more Upstream summary: It was discovered that Django did not vary cached response headers on cookies when sessions […]

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