========================================================================== Ubuntu Security Notice USN-5804-1 January 13, 2023
linux, linux-aws, linux-aws-hwe, linux-azure, linux-azure-4.15, linux-gcp, linux-gcp-5.4, linux-hwe, linux-ibm, linux-kvm, linux-oracle, linux-oracle-5.4, vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 20.04 LTS - Ubuntu 18.04 LTS - Ubuntu 16.04 ESM - 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-gcp: Linux kernel for Google Cloud Platform (GCP) systems - linux-ibm: Linux kernel for IBM cloud systems - linux-kvm: Linux kernel for cloud environments - linux-oracle: Linux kernel for Oracle Cloud systems - linux-azure-4.15: Linux kernel for Microsoft Azure Cloud systems - linux-gcp-5.4: Linux kernel for Google Cloud Platform (GCP) systems - linux-oracle-5.4: Linux kernel for Oracle Cloud systems - linux-aws-hwe: Linux kernel for Amazon Web Services (AWS-HWE) systems - linux-hwe: Linux hardware enablement (HWE) kernel - linux-azure: Linux kernel for Microsoft Azure Cloud systems Details: It was discovered that the NFSD implementation in the Linux kernel did not properly handle some RPC messages, leading to a buffer overflow. A remote attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2022-43945) Tamás Koczka discovered that the Bluetooth L2CAP handshake implementation in the Linux kernel contained multiple use-after-free vulnerabilities. A physically proximate attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2022-42896) It was discovered that the Xen netback driver in the Linux kernel did not properly handle packets structured in certain ways. An attacker in a guest VM could possibly use this to cause a denial of service (host NIC availability). (CVE-2022-3643) It was discovered that an integer overflow vulnerability existed in the Bluetooth subsystem in the Linux kernel. A physically proximate attacker could use this to cause a denial of service (system crash). (CVE-2022-45934) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 20.04 LTS: linux-image-5.4.0-1042-ibm 5.4.0-1042.47 linux-image-5.4.0-1084-kvm 5.4.0-1084.90 linux-image-5.4.0-1092-oracle 5.4.0-1092.101 linux-image-5.4.0-1094-aws 5.4.0-1094.102 linux-image-5.4.0-1098-gcp 5.4.0-1098.107 linux-image-5.4.0-137-generic 5.4.0-137.154 linux-image-5.4.0-137-generic-lpae 5.4.0-137.154 linux-image-5.4.0-137-lowlatency 5.4.0-137.154 linux-image-aws-lts-20.04 5.4.0.1094.91 linux-image-gcp-lts-20.04 5.4.0.1098.100 linux-image-generic 5.4.0.137.135 linux-image-generic-lpae 5.4.0.137.135 linux-image-ibm 5.4.0.1042.68 linux-image-ibm-lts-20.04 5.4.0.1042.68 linux-image-kvm 5.4.0.1084.78 linux-image-lowlatency 5.4.0.137.135 linux-image-oem 5.4.0.137.135 linux-image-oem-osp1 5.4.0.137.135 linux-image-oracle-lts-20.04 5.4.0.1092.85 linux-image-virtual 5.4.0.137.135 Ubuntu 18.04 LTS: linux-image-4.15.0-1134-kvm 4.15.0-1134.139 linux-image-4.15.0-1159-azure 4.15.0-1159.174 linux-image-4.15.0-202-generic 4.15.0-202.213 linux-image-4.15.0-202-generic-lpae 4.15.0-202.213 linux-image-4.15.0-202-lowlatency 4.15.0-202.213 linux-image-5.4.0-1092-oracle 5.4.0-1092.101~18.04.1 linux-image-5.4.0-1098-gcp 5.4.0-1098.107~18.04.1 linux-image-azure-lts-18.04 4.15.0.1159.127 linux-image-gcp 5.4.0.1098.74 linux-image-generic 4.15.0.202.185 linux-image-generic-lpae 4.15.0.202.185 linux-image-kvm 4.15.0.1134.125 linux-image-lowlatency 4.15.0.202.185 linux-image-oracle 5.4.0.1092.101~18.04.66 linux-image-virtual 4.15.0.202.185 Ubuntu 16.04 ESM: linux-image-4.15.0-1143-gcp 4.15.0-1143.159~16.04.1 linux-image-4.15.0-1148-aws-hwe 4.15.0-1148.160~16.04.1 linux-image-4.15.0-202-generic 4.15.0-202.213~16.04.1 linux-image-4.15.0-202-lowlatency 4.15.0-202.213~16.04.1 linux-image-aws-hwe 4.15.0.1148.133 linux-image-gcp 4.15.0.1143.135 linux-image-generic-hwe-16.04 4.15.0.202.187 linux-image-gke 4.15.0.1143.135 linux-image-lowlatency-hwe-16.04 4.15.0.202.187 linux-image-oem 4.15.0.202.187 linux-image-virtual-hwe-16.04 4.15.0.202.187 Ubuntu 14.04 ESM: linux-image-4.15.0-1159-azure 4.15.0-1159.174~14.04.1 linux-image-azure 4.15.0.1159.126 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-5804-1 CVE-2022-3643, CVE-2022-42896, CVE-2022-43945, CVE-2022-45934 Package Information: https://launchpad.net/ubuntu/+source/linux/5.4.0-137.154 https://launchpad.net/ubuntu/+source/linux-aws/5.4.0-1094.102 https://launchpad.net/ubuntu/+source/linux-gcp/5.4.0-1098.107 https://launchpad.net/ubuntu/+source/linux-ibm/5.4.0-1042.47 https://launchpad.net/ubuntu/+source/linux-kvm/5.4.0-1084.90 https://launchpad.net/ubuntu/+source/linux-oracle/5.4.0-1092.101 https://launchpad.net/ubuntu/+source/linux/4.15.0-202.213 https://launchpad.net/ubuntu/+source/linux-azure-4.15/4.15.0-1159.174 https://launchpad.net/ubuntu/+source/linux-gcp-5.4/5.4.0-1098.107~18.04.1 https://launchpad.net/ubuntu/+source/linux-kvm/4.15.0-1134.139 https://launchpad.net/ubuntu/+source/linux-oracle-5.4/5.4.0-1092.101~18.04.1
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