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The new Ubuntu Linux kernel security updates come about three weeks after the previous security update and patch a total of 16 vulnerabilities for Ubuntu 22.04 LTS (Jammy Jellyfish), Ubuntu 20.04 LTS (Focal Fossa), Ubuntu 18.04 LTS (Bionic Beaver), and Ubuntu 16.04 ESM (Xenial Xerus).
For Ubuntu 22.04 LTS and Ubuntu 20.04 LTS systems running Linux kernel 5.15 LTS, the new kernel updates address CVE-2022-1882, a race condition discovered by Selim Enes Karaduman in the general notification queue implementation, as well as CVE-2022-39189, a security flaw discovered by Google Project Zero’s Jann Horn in the KVM subsystem. Both of them could allow a local attacker in a guest virtual machine to cause a denial of service (guest crash) or possibly execute arbitrary code.

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