Canonical today fulfilled its promise with the latest in-line kernel and NVIDIA updates fixing Meltdown and Specter vulnerabilities for all still-supported Ubuntu Linux systems. The company released a notice last week saying it will fix two security holes, Meltdown and Specter, in its recent internal patch, which is now fixed with Ubuntu 17.10 (Artful Aardvark), Ubuntu 16.04 LTS (Xenial Xerus) and Ubuntu 14.04 LTS (Trusty Tahr) These problems.
Security Bulletin wrote: "Jann Horn found that microprocessors using a specific executive and indirect branch prediction may be through side-channel attacks to read the unauthorized storage of information. This hole is known as Meltdown. Local attackers can use this vulnerability to extract sensitive information, including kernel storage information (CVE-2017-5754) & Rdquo ;.
For Ubuntu 17.10, this newer kernel patch also fixes four other security vulnerabilities that involve the deployment of a Berkeley Packet Filter (BPF) in the Linux Kernel that allows local attackers to execute arbitrary code or system crashes with service refusalCVE-2017-17863,CVE-2017-16995,CVE-2017-17862withCVE-2017-17864).