How to Add and Delete Users on Ubuntu 24.04 (UBUNTU-20-04)
Learn how to add and delete users on Ubuntu 24.04 with command-line tools. Step-by-step guide for managing user accounts, sudo access, and home directories.
Ubuntu 20.04 — jinja2 — multiple vulnerabilities (7 CVEs) — patch and remediation guide
🟡 Medium ⏱ 10–30 min Last verified: 7 October 2025 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read • Source: Ubuntu Security Notice USN-7343-2 Related CVEs: https://launchpad.net/bugs/2102129 CVE-2024-56201 CVE-2024-56326 CVE-2025-27516 CVE-2024-34064 CVE-2020-28493 CVE-2024-22195 Upstream summary: USN-7343-1 fixed vulnerabilities in Jinja2. The update introduced a regression when attempting to import Jinja2 on Ubuntu 18.04 […]
Ubuntu 20.04 — libraw — multiple vulnerabilities (12 CVEs) — patch and remediation guide
🟠 High ⏱ 15–60 min Last verified: 5 October 2025 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read • Source: Ubuntu Security Notice USN-7485-1 Related CVEs: CVE-2025-43961 CVE-2025-43962 CVE-2025-43963 CVE-2025-43964 CVE-2020-22628 CVE-2021-32142 CVE-2023-1729 CVE-2020-15503 +4 more Upstream summary: It was discovered that LibRaw could be made to read out of bounds. An attacker […]
Ubuntu 20.04 — poppler — multiple vulnerabilities (17 CVEs) — patch and remediation guide
🟠 High ⏱ 15–60 min Last verified: 4 October 2025 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read • Source: Ubuntu Security Notice USN-7858-1 Related CVEs: CVE-2025-52885 CVE-2025-50420 CVE-2025-52886 CVE-2022-27337 CVE-2025-43903 CVE-2025-32364 CVE-2025-32365 CVE-2024-56378 +9 more Upstream summary: It was discovered that poppler incorrectly handled certain PDF files. An attacker could possibly use […]
Ubuntu 20.04 — erlang — multiple vulnerabilities (8 CVEs) — patch and remediation guide
🟡 Medium ⏱ 10–30 min Last verified: 1 October 2025 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read • Source: Ubuntu Security Notice USN-7831-1 Related CVEs: CVE-2025-48041 CVE-2025-48038 CVE-2025-48040 CVE-2025-48039 CVE-2025-32433 CVE-2025-30211 CVE-2025-26618 CVE-2022-37026 Upstream summary: It was discovered that Erlang incorrectly handled resource allocation and consumption in the SFTP SSH module. An […]
Ubuntu 20.04 — net-tools — multiple vulnerabilities (2 CVEs) — patch and remediation guide
🟢 Low ⏱ 5–15 min Last verified: 27 September 2025 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read • Source: Ubuntu Security Notice USN-7537-2 Related CVEs: https://launchpad.net/bugs/2111912 CVE-2025-46836 Upstream summary: USN-7537-1 fixed a vulnerability in net-tools that caused a regression. This update fixes the problem. Original advisory details: It was discovered that net-tools […]
Ubuntu 20.04 — adsys — multiple vulnerabilities (8 CVEs) — patch and remediation guide
🟡 Medium ⏱ 10–30 min Last verified: 25 September 2025 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read • Source: Ubuntu Security Notice USN-8089-3 Related CVEs: CVE-2023-3978 CVE-2025-47911 CVE-2022-41723 CVE-2025-58190 CVE-2021-33194 CVE-2022-27664 CVE-2025-22872 CVE-2024-45338 Upstream summary: USN-8089-1 fixed vulnerabilities in Go Networking. This update provides the corresponding update to code vendored in LXD, […]
Ubuntu 20.04 — rust-openssl — multiple vulnerabilities (3 CVEs) — patch and remediation guide
🟡 Medium ⏱ 10–30 min Last verified: 17 September 2025 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read • Source: Ubuntu Security Notice USN-7891-1 Related CVEs: CVE-2023-53159 CVE-2025-3416 CVE-2025-24898 Upstream summary: Matt Mastracci discovered that rust-openssl was incorrectly handling server lifetimes in certain functions. An attacker could possibly use this issue to cause […]
Ubuntu 20.04 — djvulibre — multiple vulnerabilities (7 CVEs) — patch and remediation guide
🟡 Medium ⏱ 10–30 min Last verified: 7 September 2025 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read • Source: Ubuntu Security Notice USN-8054-1 Related CVEs: CVE-2025-53367 CVE-2021-46312 CVE-2021-32490 CVE-2021-32491 CVE-2021-32492 CVE-2021-32493 CVE-2021-3500 Upstream summary: It was discovered that DjVuLibre could be forced to execute a division by zero in certain instances. A […]
Ubuntu 20.04 — mupdf — multiple vulnerabilities (14 CVEs) — patch and remediation guide
🟠 High ⏱ 15–60 min Last verified: 6 September 2025 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read • Source: Ubuntu Security Notice USN-7888-1 Related CVEs: CVE-2023-51106 CVE-2023-51103 CVE-2024-46657 CVE-2025-46206 CVE-2023-51104 CVE-2023-51105 CVE-2020-26683 CVE-2018-16647 +6 more Upstream summary: It was discovered that MuPDF could be made to divide by zero. An attacker could […]
