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KERNEL UPDATE: Canonical Publishes New Ubuntu Linux Kernel Updates to Fix 20 Vulnerabilities

For Ubuntu 20.10 and Ubuntu 20.04 LTS systems running Linux kernel 5.8, the new kernel update fixes multiple issues.

These include CVE-2021-20239, a flaw discovered by Ryota Shiga in Linux kernel’s sockopt BPF hooks that could allow a local attacker to exploit another kernel vulnerability; CVE-2021-20268, a flaw discovered in the BPF verifier, which could allow a local attacker to cause a denial of service (system crash) or possibly execute arbitrary code; and CVE-2021-3178, a flaw discovered in the NFS implementation, which could allow an attacker to bypass NFS access restrictions.