chris

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

Ubuntu 20.04 — usbview — 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-5249-1 Related CVEs: CVE-2022-23220 Upstream summary: It was discovered that USBView allowed unprivileged users to run usbview as root. A local attacker could use this vulnerability to gain administrative privileges […]

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Ubuntu 20.04 — linux-riscv — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — linux-riscv — multiple vulnerabilities (20 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-4425-1 Related CVEs: CVE-2019-16089 CVE-2019-19462 CVE-2020-11935 CVE-2020-15780 CVE-2020-10711 CVE-2020-10732 CVE-2020-12768 CVE-2020-12770  +12 more Upstream summary: It was discovered that the network block device (nbd) implementation in the Linux kernel did […]

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

Ubuntu 18.04 — libproxy — 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-4673-1 Related CVEs: CVE-2020-26154 CVE-2020-25219 Upstream summary: Li Fei discovered that libproxy incorrectly handled certain PAC files. An attacker could possibly use this issue to cause a crash or execute […]

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

Ubuntu 18.04 — htmlunit — 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-8220-1 Related CVEs: CVE-2023-49093 Upstream summary: It was discovered that HtmlUnit was vulnerable to remote code execution via XSLT when browsing an attacker-controlled webpage. An attacker could possibly use this […]

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Ubuntu 22.04 — libcpanel-json-xs-perl — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 22.04

Ubuntu 22.04 — libcpanel-json-xs-perl — multiple vulnerabilities (2 CVEs) — 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-7749-1 Related CVEs: CVE-2025-40929 CVE-2022-48623 Upstream summary: It was discovered that Cpanel-JSON-XS incorrectly handled parsing certain JSON data. An attacker could possibly use this issue to cause Cpanel-JSON-XS to crash, […]

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Ubuntu 18.04 — grub2-signed — multiple vulnerabilities (17 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — grub2-signed — multiple vulnerabilities (17 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-4992-1 Related CVEs: CVE-2020-14372 CVE-2020-25632 CVE-2020-27749 CVE-2020-27779 CVE-2021-20225 CVE-2021-20233 https://wiki.ubuntu.com/SecurityTeam/KnowledgeBase/GRUB2SecureBootBypass2021 https://launchpad.net/bugs/1889556  +9 more Upstream summary: Máté Kukri discovered that the acpi command in GRUB 2 allowed privileged users to load […]

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Ubuntu 24.04 — wlc — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 24.04

Ubuntu 24.04 — wlc — multiple vulnerabilities (2 CVEs) — 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-7981-1 Related CVEs: CVE-2026-22251 CVE-2026-22250 Upstream summary: It was discovered that wlc did not correctly handle SSL verification. An attacker could possibly use this issue to access sensitive resources. (CVE-2026-22250) […]

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

Ubuntu 14.04 — paramiko — 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-3796-1 Related CVEs: CVE-2018-1000805 CVE-2018-7750 Upstream summary: Daniel Hoffman discovered that Paramiko incorrectly handled authentication when being used as a server. A remote attacker could use this issue to bypass […]

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

Ubuntu 22.04 — sudo — 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-8092-1 Related CVEs: https://launchpad.net/bugs/2143042 CVE-2025-32462 CVE-2025-32463 CVE-2023-28486 CVE-2023-28487 CVE-2023-27320 CVE-2022-33070 CVE-2023-22809 Upstream summary: It was discovered that Sudo incorrectly checked return codes when dropping privileges to run the mailer. A […]

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Ubuntu 16.04 — grub2-signed — multiple vulnerabilities (10 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

Ubuntu 16.04 — grub2-signed — multiple vulnerabilities (10 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-4432-2 Related CVEs: https://launchpad.net/bugs/1889556 https://wiki.ubuntu.com/SecurityTeam/KnowledgeBase/GRUB2SecureBootBypass CVE-2020-10713 CVE-2020-14308 CVE-2020-14309 CVE-2020-14310 CVE-2020-14311 CVE-2020-15705  +2 more Upstream summary: USN-4432-1 fixed vulnerabilities in GRUB2 affecting Secure Boot environments. Unfortunately, the update introduced regressions for […]

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