========================================================================= Ubuntu Security Notice USN-4526-1 September 22, 2020 linux, linux-aws, linux-aws-hwe, linux-azure, linux-azure-4.15, linux-gcp, linux-gcp-4.15, linux-gke-4.15, linux-hwe, 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 - Ubuntu 14.04 ESM 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-azure-4.15: Linux kernel for Microsoft Azure Cloud systems - linux-gcp-4.15: Linux kernel for Google Cloud Platform (GCP) systems - linux-gke-4.15: Linux kernel for Google Container Engine (GKE) systems - linux-oem: Linux kernel for OEM systems - linux-oracle: Linux kernel for Oracle Cloud systems - linux-raspi2: Linux kernel for Raspberry Pi (V8) systems - linux-snapdragon: Linux kernel for Qualcomm 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: It was discovered that the AMD Cryptographic Coprocessor device driver in the Linux kernel did not properly deallocate memory in some situations. A local attacker could use this to cause a denial of service (memory exhaustion). (CVE-2019-18808) It was discovered that the Conexant 23885 TV card device driver for the Linux kernel did not properly deallocate memory in some error conditions. A local attacker could use this to cause a denial of service (memory exhaustion). (CVE-2019-19054) It was discovered that the ADIS16400 IIO IMU Driver for the Linux kernel did not properly deallocate memory in certain error conditions. A local attacker could use this to cause a denial of service (memory exhaustion). (CVE-2019-19061) It was discovered that the AMD Audio Coprocessor driver for the Linux kernel did not properly deallocate memory in certain error conditions. A local attacker with the ability to load modules could use this to cause a denial of service (memory exhaustion). (CVE-2019-19067) It was discovered that the Atheros HTC based wireless driver in the Linux kernel did not properly deallocate in certain error conditions. A local attacker could use this to cause a denial of service (memory exhaustion). (CVE-2019-19073, CVE-2019-19074) It was discovered that the F2FS file system in the Linux kernel did not properly perform bounds checking in some situations, leading to an out-of- bounds read. A local attacker could possibly use this to expose sensitive information (kernel memory). (CVE-2019-9445) It was discovered that the VFIO PCI driver in the Linux kernel did not properly handle attempts to access disabled memory spaces. A local attacker could use this to cause a denial of service (system crash). (CVE-2020-12888) It was discovered that the cgroup v2 subsystem in the Linux kernel did not properly perform reference counting in some situations, leading to a NULL pointer dereference. A local attacker could use this to cause a denial of service or possibly gain administrative privileges. (CVE-2020-14356) It was discovered that the state of network RNG in the Linux kernel was potentially observable. A remote attacker could use this to expose sensitive information. (CVE-2020-16166) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 18.04 LTS: linux-image-4.15.0-1054-oracle 4.15.0-1054.58 linux-image-4.15.0-1070-gke 4.15.0-1070.73 linux-image-4.15.0-1071-raspi2 4.15.0-1071.75 linux-image-4.15.0-1083-aws 4.15.0-1083.87 linux-image-4.15.0-1084-gcp 4.15.0-1084.95 linux-image-4.15.0-1087-snapdragon 4.15.0-1087.95 linux-image-4.15.0-1096-azure 4.15.0-1096.106 linux-image-4.15.0-1097-oem 4.15.0-1097.107 linux-image-4.15.0-118-generic 4.15.0-118.119 linux-image-4.15.0-118-generic-lpae 4.15.0-118.119 linux-image-4.15.0-118-lowlatency 4.15.0-118.119 linux-image-aws-lts-18.04 4.15.0.1083.85 linux-image-azure-lts-18.04 4.15.0.1096.69 linux-image-gcp-lts-18.04 4.15.0.1084.102 linux-image-generic 4.15.0.118.105 linux-image-generic-lpae 4.15.0.118.105 linux-image-gke 4.15.0.1070.74 linux-image-gke-4.15 4.15.0.1070.74 linux-image-lowlatency 4.15.0.118.105 linux-image-oem 4.15.0.1097.101 linux-image-oracle-lts-18.04 4.15.0.1054.64 linux-image-powerpc-e500mc 4.15.0.118.105 linux-image-powerpc-smp 4.15.0.118.105 linux-image-powerpc64-emb 4.15.0.118.105 linux-image-powerpc64-smp 4.15.0.118.105 linux-image-raspi2 4.15.0.1071.68 linux-image-snapdragon 4.15.0.1087.90 linux-image-virtual 4.15.0.118.105 Ubuntu 16.04 LTS: linux-image-4.15.0-1054-oracle 4.15.0-1054.58~16.04.1 linux-image-4.15.0-1083-aws 4.15.0-1083.87~16.04.1 linux-image-4.15.0-1084-gcp 4.15.0-1084.95~16.04.1 linux-image-4.15.0-1096-azure 4.15.0-1096.106~16.04.1 linux-image-4.15.0-118-generic 4.15.0-118.119~16.04.1 linux-image-4.15.0-118-generic-lpae 4.15.0-118.119~16.04.1 linux-image-4.15.0-118-lowlatency 4.15.0-118.119~16.04.1 linux-image-aws-hwe 4.15.0.1083.79 linux-image-azure 4.15.0.1096.90 linux-image-azure-edge 4.15.0.1096.90 linux-image-gcp 4.15.0.1084.85 linux-image-generic-hwe-16.04 4.15.0.118.119 linux-image-generic-lpae-hwe-16.04 4.15.0.118.119 linux-image-gke 4.15.0.1084.85 linux-image-lowlatency-hwe-16.04 4.15.0.118.119 linux-image-oem 4.15.0.118.119 linux-image-oracle 4.15.0.1054.44 linux-image-virtual-hwe-16.04 4.15.0.118.119 Ubuntu 14.04 ESM: linux-image-4.15.0-1096-azure 4.15.0-1096.106~14.04.1 linux-image-azure 4.15.0.1096.72 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/4526-1 CVE-2019-18808, CVE-2019-19054, CVE-2019-19061, CVE-2019-19067, CVE-2019-19073, CVE-2019-19074, CVE-2019-9445, CVE-2020-12888, CVE-2020-14356, CVE-2020-16166 Package Information: https://launchpad.net/ubuntu/+source/linux/4.15.0-118.119 https://launchpad.net/ubuntu/+source/linux-aws/4.15.0-1083.87 https://launchpad.net/ubuntu/+source/linux-azure-4.15/4.15.0-1096.106 https://launchpad.net/ubuntu/+source/linux-gcp-4.15/4.15.0-1084.95 https://launchpad.net/ubuntu/+source/linux-gke-4.15/4.15.0-1070.73 https://launchpad.net/ubuntu/+source/linux-oem/4.15.0-1097.107 https://launchpad.net/ubuntu/+source/linux-oracle/4.15.0-1054.58 https://launchpad.net/ubuntu/+source/linux-raspi2/4.15.0-1071.75 https://launchpad.net/ubuntu/+source/linux-snapdragon/4.15.0-1087.95 https://launchpad.net/ubuntu/+source/linux-aws-hwe/4.15.0-1083.87~16.04.1 https://launchpad.net/ubuntu/+source/linux-azure/4.15.0-1096.106~16.04.1 https://launchpad.net/ubuntu/+source/linux-gcp/4.15.0-1084.95~16.04.1 https://launchpad.net/ubuntu/+source/linux-hwe/4.15.0-118.119~16.04.1 https://launchpad.net/ubuntu/+source/linux-oracle/4.15.0-1054.58~16.04.1