After releasing a kernel update for the Ubuntu 18.04 LTS (Bionic Beaver) operating system series to mitigate the recently disclosed Spectre Variant 4 (CVE-2018-3639) security vulnerability, Canonical now released new kernel versions for Ubuntu 17.10 (Artful Aardvark), Ubuntu 16.04 LTS (Xenial Xerus), and Ubuntu 14.04 LTS (Trusty Tahr) operating system series and their official derivatives. Apart from addressing the Spectre Variant 4 (CVE-2018-3639) vulnerability in Ubuntu 17.10, Ubuntu 16.04 LTS, and Ubuntu 14.04 LTS 64-bit systems, the new kernel updates also patch various other issues, including a double-free error (CVE-2017-17975) in Linux kernel's USBTV007 driver, as well as a race condition (CVE-2017-18203) in the Device Mapper component.
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