The new Linux kernel security update addresses the impact of Ubuntu 19.04 (Disco Dingo), Ubuntu 18.04 LTS (Bionic Beaver), Ubuntu 16.04 LTS (Xenial Xerus), Ubuntu 14.04 ESM (Trusty Tahr) and Ubuntu 12.04 ESM (Precise Pangolin) operating system three vulnerabilities.
The first security problem addressed in this update is Peter Pi virtio network backend found in the Linux kernel (vhost_net) implementations buffer overflow ( CVE-2019-14835 ), which could allow an attacker to execute arbitrary guest system code. To cause a denial of service by hosting the host operating system or operating system crashes.
The second and third Linux kernel security vulnerabilities ( CVE-2019-15031 and CVE-2019-15030 ) affected the PowerPC architecture, the architecture and in some cases mishandled the device is not available exception and interrupt exception . These may allow a local attacker to expose sensitive information.
It urged users to update their systems immediately
Canonical Ubuntu urge all users to update their systems as soon as possible to the new version of the Linux kernel, are linux-image 5.0.0-29.31 on Ubuntu 19.04 and Ubuntu 18.04.3 LTS, linux-image 4.15.0- on Ubuntu 18.04 LTS 64.73 linux-image on and Ubuntu 16.04.6 LTS linux-image and on 4.4.0-164.192 Ubuntu 14.04 ESM 3.2.0-143.190.