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Ubuntu 20.04 — gif2apng — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — gif2apng — 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-5969-1 Related CVEs: CVE-2021-45909 CVE-2021-45910 CVE-2021-45911 Upstream summary: It was discovered that gif2apng contained multiple heap-base overflows. An attacker could potentially exploit this to cause a denial of service (system […]

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Ubuntu 14.04 — lame — multiple vulnerabilities (12 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 14.04

Ubuntu 14.04 — lame — multiple vulnerabilities (12 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Ubuntu 14.04 (trusty) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4780-1 Related CVEs: CVE-2015-9099 CVE-2015-9100 CVE-2015-9101 CVE-2017-13712 CVE-2017-15018 CVE-2017-11720 CVE-2017-9411 CVE-2017-8419  +4 more Upstream summary: It was discovered that LAME incorrectly handled certain audio files. A remote attacker could possibly […]

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

Ubuntu 18.04 — check-mk — 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-5527-1 Related CVEs: CVE-2017-14955 CVE-2017-9781 CVE-2021-36563 CVE-2021-40906 CVE-2022-24565 Upstream summary: It was discovered that Checkmk incorrectly handled authentication. An attacker could possibly use this issue to cause a race condition […]

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Ubuntu 22.04 — pdfresurrect — multiple vulnerabilities (5 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 22.04

Ubuntu 22.04 — pdfresurrect — multiple vulnerabilities (5 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-5282-1 Related CVEs: CVE-2019-14267 CVE-2019-14934 CVE-2020-20740 CVE-2020-9549 CVE-2021-3508 Upstream summary: It was discovered that PDFResurrect was incorrectly handling corrupted PDF files. An attacker could possibly use this issue to cause […]

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Ubuntu 16.04 — bluez — multiple vulnerabilities (11 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

Ubuntu 16.04 — bluez — multiple vulnerabilities (11 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-7265-1 Related CVEs: CVE-2019-8921 CVE-2019-8922 CVE-2022-3563 CVE-2023-27349 CVE-2023-45866 CVE-2022-0204 CVE-2020-26558 CVE-2020-27153  +3 more Upstream summary: Julian Rauchberger discovered that BlueZ did not correctly handle certain memory operations. An attacker could […]

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Ubuntu 22.04 — cacti — multiple vulnerabilities (11 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 22.04

Ubuntu 22.04 — cacti — multiple vulnerabilities (11 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Ubuntu 22.04 (jammy) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-7226-1 Related CVEs: CVE-2022-46169 CVE-2024-25641 CVE-2024-29894 CVE-2024-31443 CVE-2024-31444 CVE-2024-31445 CVE-2024-31458 CVE-2024-31459  +3 more Upstream summary: It was discovered that Cacti did not properly sanitize the 'poller_id' parameter in the "remote_agent.php" […]

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Ubuntu 14.04 — libhtml-stripscripts-perl — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 14.04

Ubuntu 14.04 — libhtml-stripscripts-perl — vulnerability — 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-6100-1 Related CVEs: CVE-2023-24038 Upstream summary: It was discovered that HTML::StripScripts does not properly parse HTML content with certain style attributes. A remote attacker could use this issue to cause […]

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Ubuntu 18.04 — matrix-synapse — multiple vulnerabilities (15 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — matrix-synapse — multiple vulnerabilities (15 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-7444-1 Related CVEs: CVE-2023-32683 CVE-2023-43796 CVE-2022-39374 CVE-2023-41335 CVE-2022-39335 CVE-2023-42453 CVE-2024-31208 CVE-2024-53863  +7 more Upstream summary: It was discovered that Synapse network policies could be bypassed via specially crafted URLs. An […]

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

Ubuntu 18.04 — influxdb — 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-5451-1 Related CVEs: CVE-2019-20933 Upstream summary: Ilya Averyanov discovered that an InfluxDB vulnerability allowed attackers to bypass authentication and gain access to any known database user. Table of contents Symptom […]

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Ubuntu 20.04 — vlc — multiple vulnerabilities (10 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — vlc — 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-7243-1 Related CVEs: CVE-2024-46461 CVE-2023-47359 CVE-2023-47360 CVE-2019-19721 CVE-2020-13428 CVE-2021-25801 CVE-2021-25802 CVE-2021-25803  +2 more Upstream summary: It was discovered that VLC incorrectly handled memory when reading an MMS stream. An attacker […]

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