Ubuntu 20.04 — linux-hwe-5.11 — 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-5219-1 Related CVEs: CVE-2021-4204 https://launchpad.net/bugs/1956585 CVE-2021-20321 CVE-2021-3760 CVE-2021-4002 CVE-2021-41864 CVE-2021-43056 CVE-2021-43267 +12 more Upstream summary: It was discovered that the eBPF implementation in the Linux kernel did not properly validate […]