========================================================================== Ubuntu Security Notice USN-4209-1 December 02, 2019 linux, linux-aws, linux-aws-5.0, linux-gcp, linux-gke-5.0, linux-hwe, linux-kvm, linux-oem-osp1, linux-oracle, linux-oracle-5.0, linux-raspi2 vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 19.04 - Ubuntu 18.04 LTS Summary: Several security issues were fixed in the Linux kernel. Software Description: - linux: Linux kernel - linux-aws: Linux kernel for Amazon Web Services (AWS) systems - linux-gcp: Linux kernel for Google Cloud Platform (GCP) systems - linux-kvm: Linux kernel for cloud environments - linux-oracle: Linux kernel for Oracle Cloud systems - linux-raspi2: Linux kernel for Raspberry Pi 2 - linux-aws-5.0: Linux kernel for Amazon Web Services (AWS) systems - linux-gke-5.0: Linux kernel for Google Container Engine (GKE) systems - linux-hwe: Linux hardware enablement (HWE) kernel - linux-oem-osp1: Linux kernel for OEM processors - linux-oracle-5.0: Linux kernel for Oracle Cloud systems Details: Jann Horn discovered that the OverlayFS and ShiftFS Drivers in the Linux kernel did not properly handle reference counting during memory mapping operations when used in conjunction with AUFS. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2019-15794) It was discovered that a buffer overflow existed in the 802.11 Wi-Fi configuration interface for the Linux kernel when handling beacon settings. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2019-16746) It was discovered that there was a memory leak in the Advanced Buffer Management functionality of the Netronome NFP4000/NFP6000 NIC Driver in the Linux kernel during certain error scenarios. A local attacker could use this to cause a denial of service (memory exhaustion). (CVE-2019-19076) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 19.04: linux-image-5.0.0-1008-oracle 5.0.0-1008.13 linux-image-5.0.0-1022-aws 5.0.0-1022.25 linux-image-5.0.0-1023-kvm 5.0.0-1023.25 linux-image-5.0.0-1023-raspi2 5.0.0-1023.24 linux-image-5.0.0-1026-gcp 5.0.0-1026.27 linux-image-5.0.0-37-generic 5.0.0-37.40 linux-image-5.0.0-37-generic-lpae 5.0.0-37.40 linux-image-5.0.0-37-lowlatency 5.0.0-37.40 linux-image-aws 5.0.0.1022.24 linux-image-gcp 5.0.0.1026.51 linux-image-generic 5.0.0.37.39 linux-image-generic-lpae 5.0.0.37.39 linux-image-gke 5.0.0.1026.51 linux-image-kvm 5.0.0.1023.24 linux-image-lowlatency 5.0.0.37.39 linux-image-oracle 5.0.0.1008.34 linux-image-raspi2 5.0.0.1023.21 linux-image-virtual 5.0.0.37.39 Ubuntu 18.04 LTS: linux-image-5.0.0-1008-oracle 5.0.0-1008.13~18.04.1 linux-image-5.0.0-1022-aws 5.0.0-1022.25~18.04.1 linux-image-5.0.0-1026-gcp 5.0.0-1026.27~18.04.1 linux-image-5.0.0-1026-gke 5.0.0-1026.27~18.04.2 linux-image-5.0.0-1030-oem-osp1 5.0.0-1030.34 linux-image-5.0.0-37-generic 5.0.0-37.40~18.04.1 linux-image-5.0.0-37-generic-lpae 5.0.0-37.40~18.04.1 linux-image-5.0.0-37-lowlatency 5.0.0-37.40~18.04.1 linux-image-aws-edge 5.0.0.1022.36 linux-image-gcp 5.0.0.1026.30 linux-image-generic-hwe-18.04 5.0.0.37.95 linux-image-generic-lpae-hwe-18.04 5.0.0.37.95 linux-image-gke-5.0 5.0.0.1026.15 linux-image-lowlatency-hwe-18.04 5.0.0.37.95 linux-image-oem-osp1 5.0.0.1030.34 linux-image-oracle-edge 5.0.0.1008.7 linux-image-snapdragon-hwe-18.04 5.0.0.37.95 linux-image-virtual-hwe-18.04 5.0.0.37.95 After a standard system update you need to reboot your computer to make all the necessary changes. ATTENTION: Due to an unavoidable ABI change the kernel updates have been given a new version number, which requires you to recompile and reinstall all third party kernel modules you might have installed. Unless you manually uninstalled the standard kernel metapackages (e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual, linux-powerpc), a standard system upgrade will automatically perform this as well. References: https://usn.ubuntu.com/4209-1 CVE-2019-15794, CVE-2019-16746, CVE-2019-19076 Package Information: https://launchpad.net/ubuntu/+source/linux/5.0.0-37.40 https://launchpad.net/ubuntu/+source/linux-aws/5.0.0-1022.25 https://launchpad.net/ubuntu/+source/linux-gcp/5.0.0-1026.27 https://launchpad.net/ubuntu/+source/linux-kvm/5.0.0-1023.25 https://launchpad.net/ubuntu/+source/linux-oracle/5.0.0-1008.13 https://launchpad.net/ubuntu/+source/linux-raspi2/5.0.0-1023.24 https://launchpad.net/ubuntu/+source/linux-aws-5.0/5.0.0-1022.25~18.04.1 https://launchpad.net/ubuntu/+source/linux-gcp/5.0.0-1026.27~18.04.1 https://launchpad.net/ubuntu/+source/linux-gke-5.0/5.0.0-1026.27~18.04.2 https://launchpad.net/ubuntu/+source/linux-hwe/5.0.0-37.40~18.04.1 https://launchpad.net/ubuntu/+source/linux-oem-osp1/5.0.0-1030.34 https://launchpad.net/ubuntu/+source/linux-oracle-5.0/5.0.0-1008.13~18.04.1