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Canonical released today a new major Linux kernel update for all supported Ubuntu releases to address up to 15 security vulnerabilities affecting all supported kernel versions and flavors.
The new Linux kernel update patches five security vulnerabilities affecting all supported Ubuntu releases, including Ubuntu 21.10 (Impish Indri), Ubuntu 20.04 LTS (Focal Fossa), and Ubuntu 18.04 LTS (Bionic Beaver), as well as the Ubuntu 16.04 and Ubuntu 14.04 ESM releases.
These include CVE-2021-22600, a double-free vulnerability discovered in Linux kernel’s Packet network protocol implementation, as well as CVE-2021-4083, a race condition discovered by Google Project Zero’s Jann Horn in the Unix domain socket implementation. Both issues could allow a local attacker to cause a denial of service (system crash) or possibly execute arbitrary code.
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