Canonical has released a new major Linux kernel security update for Ubuntu 21.04 (Hirsute Hippo), patching a total of 17 security vulnerabilities!

The new Linux kernel security patch is here about a month and a half after Ubuntu 21.04’s first kernel update and fixes no less than seven security vulnerabilities (CVE-2020-24586CVE-2020-24587CVE-2020-24588CVE-2020-26139CVE-2020-26141CVE-2020-26145CVE-2020-26147) discovered by Mathy Vanhoef in Linux kernel’s Wi-Fi implementation, which could allow a physically proximate attacker to inject packets, decrypt fragments, exfiltrate selected fragments, expose sensitive information or cause a denial of service (system crash).

The new Ubuntu 21.04 kernel update also patches a race condition (CVE-2021-32399) and a use-after-free flaw (CVE-2021-33034) discovered in Linux kernel’s Bluetooth subsystem and Bluetooth HCI driver respectively. These issues could allow a local attacker to cause a denial of service (system crash) or execute arbitrary code.