Articles by KENNETH

USN-3904-1: NVIDIA graphics drivers vulnerability nvidia-graphics-drivers-390 vulnerability A security issue affects these releases of Ubuntu and its derivatives: Ubuntu 18.10 Ubuntu 18.04 LTS Summary NVIDIA graphics drivers could be made to expose sensitive information. Software Description nvidia-graphics-drivers-390 – NVIDIA binary X.Org driver Details It was discovered that the NVIDIA graphics drivers incorrectly handled the GPU performance counters. A local attacker could possibly use this issue to access the application data processed on the GPU. Update instructions The problem can be corrected by updating your system to the following package versions: Ubuntu 18.10 xserver-xorg-video-nvidia-390 – 390.116-0ubuntu0.18.10.1 Ubuntu 18.04 LTS xserver-xorg-video-nvidia-390 – 390.116-0ubuntu0.18.04.1 To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades. After a standard system update you need to reboot your computer to make all the necessary changes. References CVE‑2018‑6260 Source: USN-3904-1: NVIDIA graphics drivers vulnerability

USN-3903-2: Linux kernel (HWE) vulnerabilities linux-hwe, linux-azure vulnerabilities A security issue affects these releases of Ubuntu and its derivatives: Ubuntu 18.04 LTS Summary Several security issues were fixed in the Linux kernel. Software Description linux-azure – Linux kernel for Microsoft Azure Cloud systems linux-hwe – Linux hardware enablement (HWE) kernel Details USN-3903-1 fixed vulnerabilities in the Linux kernel for Ubuntu 18.10. This update provides the corresponding updates for the Linux Hardware Enablement (HWE) kernel from Ubuntu 18.10 for Ubuntu 18.04 LTS. Jason Wang discovered that the vhost net driver in the Linux kernel contained an out of bounds write vulnerability. An attacker in a guest virtual machine could use this to cause a denial of service (host system crash) or possibly execute arbitrary code in the host kernel. (CVE-2018-16880) Jann Horn discovered that the userfaultd implementation in the Linux kernel [ more… ]

USN-3903-1: Linux kernel vulnerabilities linux, linux-azure, linux-gcp, linux-kvm, linux-raspi2 vulnerabilities A security issue affects these releases of Ubuntu and its derivatives: Ubuntu 18.10 Summary Several security issues were fixed in the Linux kernel. Software Description linux – Linux kernel linux-azure – Linux kernel for Microsoft Azure Cloud systems linux-gcp – Linux kernel for Google Cloud Platform (GCP) systems linux-kvm – Linux kernel for cloud environments linux-raspi2 – Linux kernel for Raspberry Pi 2 Details Jason Wang discovered that the vhost net driver in the Linux kernel contained an out of bounds write vulnerability. An attacker in a guest virtual machine could use this to cause a denial of service (host system crash) or possibly execute arbitrary code in the host kernel. (CVE-2018-16880) Jann Horn discovered that the userfaultd implementation in the Linux kernel did not properly restrict access to certain [ more… ]