========================================================================== Ubuntu Security Notice USN-6130-1 June 01, 2023 linux, linux-aws, linux-aws-hwe, linux-azure, linux-azure-4.15, linux-gcp, linux-gcp-4.15, linux-hwe, linux-kvm, linux-oracle, linux-snapdragon vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 18.04 LTS - Ubuntu 16.04 LTS (Available with Ubuntu Pro) - Ubuntu 14.04 LTS (Available with Ubuntu Pro) 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-kvm: Linux kernel for cloud environments - linux-oracle: Linux kernel for Oracle Cloud 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: Patryk Sondej and Piotr Krysiuk discovered that a race condition existed in the netfilter subsystem of the Linux kernel when processing batch requests, leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2023-32233) Gwangun Jung discovered that the Quick Fair Queueing scheduler implementation in the Linux kernel contained an out-of-bounds write vulnerability. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2023-31436) Reima Ishii discovered that the nested KVM implementation for Intel x86 processors in the Linux kernel did not properly validate control registers in certain situations. An attacker in a guest VM could use this to cause a denial of service (guest crash). (CVE-2023-30456) It was discovered that the Broadcom FullMAC USB WiFi driver in the Linux kernel did not properly perform data buffer size validation in some situations. A physically proximate attacker could use this to craft a malicious USB device that when inserted, could cause a denial of service (system crash) or possibly expose sensitive information. (CVE-2023-1380) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 18.04 LTS: linux-image-4.15.0-1120-oracle 4.15.0-1120.131 linux-image-4.15.0-1141-kvm 4.15.0-1141.146 linux-image-4.15.0-1151-gcp 4.15.0-1151.167 linux-image-4.15.0-1151-snapdragon 4.15.0-1151.161 linux-image-4.15.0-1157-aws 4.15.0-1157.170 linux-image-4.15.0-1166-azure 4.15.0-1166.181 linux-image-4.15.0-212-generic 4.15.0-212.223 linux-image-4.15.0-212-generic-lpae 4.15.0-212.223 linux-image-4.15.0-212-lowlatency 4.15.0-212.223 linux-image-aws-lts-18.04 4.15.0.1157.155 linux-image-azure-lts-18.04 4.15.0.1166.134 linux-image-gcp-lts-18.04 4.15.0.1151.165 linux-image-generic 4.15.0.212.195 linux-image-generic-lpae 4.15.0.212.195 linux-image-kvm 4.15.0.1141.132 linux-image-lowlatency 4.15.0.212.195 linux-image-oracle-lts-18.04 4.15.0.1120.125 linux-image-snapdragon 4.15.0.1151.150 linux-image-virtual 4.15.0.212.195 Ubuntu 16.04 LTS (Available with Ubuntu Pro): linux-image-4.15.0-1120-oracle 4.15.0-1120.131~16.04.1 linux-image-4.15.0-1151-gcp 4.15.0-1151.167~16.04.1 linux-image-4.15.0-1157-aws 4.15.0-1157.170~16.04.1 linux-image-4.15.0-1166-azure 4.15.0-1166.181~16.04.1 linux-image-4.15.0-212-generic 4.15.0-212.223~16.04.1 linux-image-4.15.0-212-lowlatency 4.15.0-212.223~16.04.1 linux-image-aws-hwe 4.15.0.1157.140 linux-image-azure 4.15.0.1166.150 linux-image-gcp 4.15.0.1151.141 linux-image-generic-hwe-16.04 4.15.0.212.197 linux-image-gke 4.15.0.1151.141 linux-image-lowlatency-hwe-16.04 4.15.0.212.197 linux-image-oem 4.15.0.212.197 linux-image-oracle 4.15.0.1120.101 linux-image-virtual-hwe-16.04 4.15.0.212.197 Ubuntu 14.04 LTS (Available with Ubuntu Pro): linux-image-4.15.0-1166-azure 4.15.0-1166.181~14.04.1 linux-image-azure 4.15.0.1166.132 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://ubuntu.com/security/notices/USN-6130-1 CVE-2023-1380, CVE-2023-30456, CVE-2023-31436, CVE-2023-32233 Package Information: https://launchpad.net/ubuntu/+source/linux/4.15.0-212.223 https://launchpad.net/ubuntu/+source/linux-aws/4.15.0-1157.170 https://launchpad.net/ubuntu/+source/linux-azure-4.15/4.15.0-1166.181 https://launchpad.net/ubuntu/+source/linux-gcp-4.15/4.15.0-1151.167 https://launchpad.net/ubuntu/+source/linux-kvm/4.15.0-1141.146 https://launchpad.net/ubuntu/+source/linux-oracle/4.15.0-1120.131 https://launchpad.net/ubuntu/+source/linux-snapdragon/4.15.0-1151.161