========================================================================== Ubuntu Security Notice USN-4345-1 April 28, 2020 linux, linux-aws, linux-aws-hwe, linux-azure, linux-gcp, linux-gke-4.15, linux-hwe, linux-kvm, linux-oem, linux-oracle, linux-raspi2, linux-snapdragon vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 18.04 LTS - Ubuntu 16.04 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-gke-4.15: Linux kernel for Google Container Engine (GKE) systems - linux-kvm: Linux kernel for cloud environments - linux-oem: Linux kernel for OEM processors - linux-oracle: Linux kernel for Oracle Cloud systems - linux-raspi2: Linux kernel for Raspberry Pi 2 - linux-snapdragon: Linux kernel for Snapdragon processors - linux-aws-hwe: Linux kernel for Amazon Web Services (AWS-HWE) systems - linux-azure: Linux kernel for Microsoft Azure Cloud systems - linux-gcp: Linux kernel for Google Cloud Platform (GCP) systems - linux-hwe: Linux hardware enablement (HWE) kernel Details: Al Viro discovered that the Linux kernel for s390x systems did not properly perform page table upgrades for kernel sections that use secondary address mode. A local attacker could use this to cause a denial of service (system crash) or execute arbitrary code. (CVE-2020-11884) It was discovered that the Intel Wi-Fi driver in the Linux kernel did not properly check for errors in some situations. A local attacker could possibly use this to cause a denial of service (system crash). (CVE-2019-16234) Tristan Madani discovered that the block I/O tracing implementation in the Linux kernel contained a race condition. A local attacker could use this to cause a denial of service (system crash) or possibly expose sensitive information. (CVE-2019-19768) It was discovered that the vhost net driver in the Linux kernel contained a stack buffer overflow. A local attacker with the ability to perform ioctl() calls on /dev/vhost-net could use this to cause a denial of service (system crash). (CVE-2020-10942) It was discovered that the OV51x USB Camera device driver in the Linux kernel did not properly validate device metadata. A physically proximate attacker could use this to cause a denial of service (system crash). (CVE-2020-11608) It was discovered that the STV06XX USB Camera device driver in the Linux kernel did not properly validate device metadata. A physically proximate attacker could use this to cause a denial of service (system crash). (CVE-2020-11609) It was discovered that the Xirlink C-It USB Camera device driver in the Linux kernel did not properly validate device metadata. A physically proximate attacker could use this to cause a denial of service (system crash). (CVE-2020-11668) It was discovered that the virtual terminal implementation in the Linux kernel contained a race condition. A local attacker could possibly use this to cause a denial of service (system crash) or expose sensitive information. (CVE-2020-8648) Jordy Zomer discovered that the floppy driver in the Linux kernel did not properly check for errors in some situations. A local attacker could possibly use this to cause a denial of service (system crash) or possibly expose sensitive information. (CVE-2020-9383) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 18.04 LTS: linux-image-4.15.0-1038-oracle 4.15.0-1038.42 linux-image-4.15.0-1058-gke 4.15.0-1058.61 linux-image-4.15.0-1059-kvm 4.15.0-1059.60 linux-image-4.15.0-1061-raspi2 4.15.0-1061.65 linux-image-4.15.0-1066-aws 4.15.0-1066.70 linux-image-4.15.0-1077-snapdragon 4.15.0-1077.84 linux-image-4.15.0-1080-oem 4.15.0-1080.90 linux-image-4.15.0-99-generic 4.15.0-99.100 linux-image-4.15.0-99-generic-lpae 4.15.0-99.100 linux-image-4.15.0-99-lowlatency 4.15.0-99.100 linux-image-aws-lts-18.04 4.15.0.1066.69 linux-image-generic 4.15.0.99.89 linux-image-generic-lpae 4.15.0.99.89 linux-image-gke 4.15.0.1058.62 linux-image-gke-4.15 4.15.0.1058.62 linux-image-kvm 4.15.0.1059.59 linux-image-lowlatency 4.15.0.99.89 linux-image-oem 4.15.0.1080.84 linux-image-oracle-lts-18.04 4.15.0.1038.47 linux-image-powerpc-e500mc 4.15.0.99.89 linux-image-powerpc-smp 4.15.0.99.89 linux-image-powerpc64-emb 4.15.0.99.89 linux-image-powerpc64-smp 4.15.0.99.89 linux-image-raspi2 4.15.0.1061.59 linux-image-snapdragon 4.15.0.1077.80 linux-image-virtual 4.15.0.99.89 Ubuntu 16.04 LTS: linux-image-4.15.0-1038-oracle 4.15.0-1038.42~16.04.1 linux-image-4.15.0-1061-gcp 4.15.0-1061.65 linux-image-4.15.0-1066-aws 4.15.0-1066.70~16.04.1 linux-image-4.15.0-1082-azure 4.15.0-1082.92~16.04.1 linux-image-4.15.0-99-generic 4.15.0-99.100~16.04.1 linux-image-4.15.0-99-generic-lpae 4.15.0-99.100~16.04.1 linux-image-4.15.0-99-lowlatency 4.15.0-99.100~16.04.1 linux-image-aws-hwe 4.15.0.1066.66 linux-image-azure 4.15.0.1082.81 linux-image-azure-edge 4.15.0.1082.81 linux-image-gcp 4.15.0.1061.75 linux-image-generic-hwe-16.04 4.15.0.99.106 linux-image-generic-lpae-hwe-16.04 4.15.0.99.106 linux-image-gke 4.15.0.1061.75 linux-image-lowlatency-hwe-16.04 4.15.0.99.106 linux-image-oem 4.15.0.99.106 linux-image-oracle 4.15.0.1038.31 linux-image-virtual-hwe-16.04 4.15.0.99.106 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/4345-1 CVE-2019-16234, CVE-2019-19768, CVE-2020-10942, CVE-2020-11608, CVE-2020-11609, CVE-2020-11668, CVE-2020-11884, CVE-2020-8648, CVE-2020-9383 Package Information: https://launchpad.net/ubuntu/+source/linux/4.15.0-99.100 https://launchpad.net/ubuntu/+source/linux-aws/4.15.0-1066.70 https://launchpad.net/ubuntu/+source/linux-gke-4.15/4.15.0-1058.61 https://launchpad.net/ubuntu/+source/linux-kvm/4.15.0-1059.60 https://launchpad.net/ubuntu/+source/linux-oem/4.15.0-1080.90 https://launchpad.net/ubuntu/+source/linux-oracle/4.15.0-1038.42 https://launchpad.net/ubuntu/+source/linux-raspi2/4.15.0-1061.65 https://launchpad.net/ubuntu/+source/linux-snapdragon/4.15.0-1077.84 https://launchpad.net/ubuntu/+source/linux-aws-hwe/4.15.0-1066.70~16.04.1 https://launchpad.net/ubuntu/+source/linux-azure/4.15.0-1082.92~16.04.1 https://launchpad.net/ubuntu/+source/linux-gcp/4.15.0-1061.65 https://launchpad.net/ubuntu/+source/linux-hwe/4.15.0-99.100~16.04.1 https://launchpad.net/ubuntu/+source/linux-oracle/4.15.0-1038.42~16.04.1