Package Management

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

Ubuntu 18.04 — libbsd — 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-4243-1 Related CVEs: CVE-2016-2090 CVE-2019-20367 Upstream summary: It was discovered that libbsd incorrectly handled certain inputs. An attacker could possibly use this issue to execute arbitrary code. This issue only […]

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Ubuntu 16.04 — mupdf — multiple vulnerabilities (8 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

Ubuntu 16.04 — mupdf — multiple vulnerabilities (8 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-7825-1 Related CVEs: CVE-2020-26683 CVE-2018-16647 CVE-2021-37220 CVE-2018-10289 CVE-2018-16648 CVE-2018-1000036 CVE-2021-3407 CVE-2020-21896 Upstream summary: It was discovered that MuPDF incorrectly managed memory, resulting in a memory leak. An attacker could possibly […]

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

Ubuntu 20.04 — tcmu — 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-4707-1 Related CVEs: CVE-2021-3139 Upstream summary: It was discovered that TCMU lacked a check for transport-layer restrictions, allowing remote attackers to read or write files via directory traversal in an […]

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

Ubuntu 18.04 — redmine — 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-4200-1 Related CVEs: CVE-2019-17427 CVE-2019-18890 Upstream summary: It was discovered that Redmine incorrectly handle certain inputs that could cause textile formatting errors. An attacker could possibly use this issue to […]

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

Ubuntu 16.04 — protobuf — 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-7629-2 Related CVEs: CVE-2025-4565 CVE-2024-7254 CVE-2015-5237 CVE-2022-1941 CVE-2021-22570 Upstream summary: USN-7435-1 and USN-7629-1 fixed vulnerabilities in Protocol Buffers for several releases of Ubuntu. This update provides the corresponding fixes for […]

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

Ubuntu 22.04 — ruby-nokogiri — 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-7659-1 Related CVEs: CVE-2022-29181 CVE-2022-40303 CVE-2020-26247 Upstream summary: It was discovered Nokogiri did not correctly parse XML Schemas. If a user or automated system were tricked into opening a specially […]

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Ubuntu 18.04 — freetds — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — freetds — vulnerability — 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-4173-1 Related CVEs: CVE-2019-13508 Upstream summary: Felix Wilhelm discovered that FreeTDS incorrectly handled certain types after a protocol downgrade. A remote attacker could use this issue to cause FreeTDS to […]

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Ubuntu 18.04 — radare2 — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — radare2 — multiple vulnerabilities (3 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-7915-1 Related CVEs: CVE-2025-60361 CVE-2025-60360 CVE-2025-60359 Upstream summary: It was discovered that Radare2 contained several memory leaks. An attacker could possibly use these issues to cause a denial of service. […]

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Ubuntu 14.04 — dosfstools — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 14.04

Ubuntu 14.04 — dosfstools — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Ubuntu 14.04 (trusty) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-2986-1 Related CVEs: CVE-2015-8872 CVE-2016-4804 Upstream summary: Hanno Böck discovered that dosfstools incorrectly handled certain malformed filesystems. A local attacker could use this issue to cause dosfstools to crash, resulting […]

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

Ubuntu 18.04 — kconfig — 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-4100-1 Related CVEs: CVE-2016-6232 CVE-2019-14744 Upstream summary: It was discovered that KConfig and KDE libraries have a vulnerability where an attacker could hide malicious code under desktop and configuration files. […]

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