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New Ubuntu Linux Kernel Security Patches Fix Up to Seven Vulnerabilities, Update Now

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Security

The new Ubuntu Linux kernel security update is available for the Ubuntu 21.04 (Hirsute Hippo), Ubuntu 20.04 LTS (Focal Fossa), and Ubuntu 18.04 LTS (Bionic Beaver) operating system series, and addresses three security issues related to the Bluetooth subsystem and NFC implementation and affecting all three releases.

These are CVE-2021-3564 and CVE-2021-3573, two flaws discovered in Linux kernel’s Bluetooth subsystem that could lead to a double-free vulnerability or a use-after-free vulnerability, respectively, allowing an attacker to cause a denial of service or possibly execute arbitrary code.

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