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Ubuntu 20.04 — qtbase-opensource-src — multiple vulnerabilities (10 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — qtbase-opensource-src — multiple vulnerabilities (10 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-8076-1 Related CVEs: CVE-2024-39936 CVE-2023-51714 CVE-2022-25255 CVE-2020-13962 CVE-2020-17507 CVE-2024-25580 CVE-2023-24607 CVE-2023-32762  +2 more Upstream summary: It was discovered that Qt did not correctly handle OpenSSL's error queue. An attacker could […]

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Ubuntu 16.04 — exiv2 — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

Ubuntu 16.04 — exiv2 — 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-8103-1 Related CVEs: CVE-2026-27596 CVE-2026-25884 CVE-2020-18899 CVE-2025-55304 CVE-2025-54080 CVE-2026-27631 CVE-2020-18771 CVE-2021-32815  +12 more Upstream summary: It was discovered that Exiv2 did not correctly handle reading certain buffers. An attacker could […]

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Ubuntu 20.04 — flatpak — multiple vulnerabilities (5 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — flatpak — multiple vulnerabilities (5 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-7046-1 Related CVEs: CVE-2024-42472 https://launchpad.net/bugs/2077087 CVE-2021-41133 CVE-2021-21381 CVE-2021-21261 Upstream summary: It was discovered that Flatpak incorrectly handled certain persisted directories. An attacker could possibly use this issue to read and […]

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Ubuntu 22.04 — python-openstackclient — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 22.04

Ubuntu 22.04 — python-openstackclient — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Ubuntu 22.04 (jammy) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-6668-1 Related CVEs: CVE-2023-6110 Upstream summary: It was discovered that when python-openstackclient attempted to delete a non-existing access rule, it would delete another existing access rule instead, contrary to expectations. […]

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Ubuntu 18.04 — libgit2 — multiple vulnerabilities (5 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — libgit2 — multiple vulnerabilities (5 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-6678-1 Related CVEs: CVE-2020-12278 CVE-2020-12279 CVE-2023-22742 CVE-2024-24575 CVE-2024-24577 Upstream summary: It was discovered that libgit2 mishandled equivalent filenames on NTFS partitions. If a user or automated system were tricked into […]

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

Ubuntu 16.04 — php-dompdf — 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-6277-1 Related CVEs: CVE-2014-5011 CVE-2014-5012 CVE-2014-5013 CVE-2021-3838 CVE-2022-2400 Upstream summary: It was discovered that Dompdf was not properly validating untrusted input when processing HTML content under certain circumstances. An attacker […]

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

Ubuntu 24.04 — fossil — 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-6770-1 Related CVEs: https://launchpad.net/bugs/2064509 Upstream summary: USN-6729-1 fixed vulnerabilities in Apache HTTP Server. The update lead to the discovery of a regression in Fossil with regards to the handling of […]

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Ubuntu 20.04 — xerces-c — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — xerces-c — multiple vulnerabilities (2 CVEs) — 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-6590-1 Related CVEs: CVE-2018-1311 CVE-2023-37536 Upstream summary: It was discovered that Xerces-C++ was not properly handling memory management operations when parsing XML data containing external DTDs, which could trigger a […]

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Ubuntu 20.04 — nss — multiple vulnerabilities (18 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — nss — multiple vulnerabilities (18 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-8071-2 Related CVEs: CVE-2026-2781 https://launchpad.net/bugs/2060906 CVE-2023-4421 CVE-2023-5388 CVE-2023-6135 CVE-2022-3479 CVE-2023-0767 CVE-2022-22747  +10 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 16.04 — python2.7 — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

Ubuntu 16.04 — python2.7 — 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-8018-3 Related CVEs: CVE-2026-0672 CVE-2025-15282 CVE-2025-12084 CVE-2026-0865 CVE-2023-27043 https://launchpad.net/bugs/2125702 CVE-2025-8194 CVE-2025-0938  +12 more Upstream summary: USN-8018-1 fixed CVE-2025-12084, CVE-2025-15282, CVE-2026-0672, CVE-2026-0865 for python3. This update provides the corresponding updates for […]

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