Fix Prevention

Ubuntu 22.04 — ceph — multiple vulnerabilities (8 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 22.04

Ubuntu 22.04 — ceph — multiple vulnerabilities (8 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Ubuntu 22.04 (jammy) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-8045-1 Related CVEs: CVE-2024-31884 CVE-2024-47866 CVE-2024-48916 CVE-2023-43040 CVE-2021-3979 CVE-2022-0670 CVE-2022-3650 CVE-2022-3854 Upstream summary: Martin Schobert discovered that Ceph did not properly verify SSL certificates when using Pybind for secure mail […]

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Ubuntu 20.04 — nltk — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — nltk — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-8214-1 Related CVEs: CVE-2025-14009 CVE-2021-3842 CVE-2021-43854 CVE-2021-3828 Upstream summary: It was discovered that NLTK incorrectly handled file extraction when opening a maliciously crafted zip file. An attacker could possibly use […]

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Ubuntu 20.04 — postorius — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — postorius — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5157-1 Related CVEs: CVE-2021-40347 Upstream summary: It was discovered that Postorius mishandled specially crafted input. An attacker could use this vulnerability that obtain sensitive information. Table of contents Symptom & […]

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Ubuntu 22.04 — python-multipart — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 22.04

Ubuntu 22.04 — python-multipart — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Ubuntu 22.04 (jammy) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-8027-1 Related CVEs: CVE-2026-24486 CVE-2024-53981 CVE-2024-24762 Upstream summary: It was discovered that Python-Multipart incorrectly handled certain regular expressions. An attacker could possibly use this issue to cause Python-Multipart to consume […]

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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: 25 May 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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Ubuntu 16.04 — webkit2gtk — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

Ubuntu 16.04 — webkit2gtk — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-3743-1 Related CVEs: CVE-2018-12911 CVE-2018-4246 CVE-2018-4261 CVE-2018-4262 CVE-2018-4263 CVE-2018-4264 CVE-2018-4265 CVE-2018-4266  +12 more Upstream summary: A large number of security issues were discovered in the WebKitGTK+ Web and JavaScript engines. […]

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Ubuntu 18.04 — pyasn1 — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — pyasn1 — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-8134-1 Related CVEs: CVE-2026-30922 CVE-2026-23490 Upstream summary: It was discovered that pyasn1 could exhaust system resources when attempting to decode a malformed certificate. An attacker could possibly use this to […]

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Ubuntu 20.04 — lua-cjson — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — lua-cjson — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-8169-1 Related CVEs: CVE-2025-49844 CVE-2022-24834 CVE-2024-31449 Upstream summary: It was discovered that Redis incorrectly handled certain specially crafted Lua scripts. A remote attacker could possibly use this issue to cause […]

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Ubuntu 16.04 — smarty3 — multiple vulnerabilities (5 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

Ubuntu 16.04 — smarty3 — multiple vulnerabilities (5 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-8272-1 Related CVEs: CVE-2023-28447 CVE-2021-21408 CVE-2021-26119 CVE-2021-26120 CVE-2021-29454 Upstream summary: Takuya Aramaki discovered that Smarty did not properly escape JavaScript code. An attacker could possibly use this issue to conduct […]

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Ubuntu 24.04 — fetchmail — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 24.04

Ubuntu 24.04 — fetchmail — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Ubuntu 24.04 (noble) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-7838-1 Related CVEs: CVE-2025-61962 Upstream summary: It was discovered that the fetchmail SMTP client incorrectly handled certain status code messages. An attacker controlling a malicious server could possibly use this […]

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