Ubuntu 6462-1: Linux kernel vulnerabilities
Summary
A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 20.04 LTS - Ubuntu 18.04 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: Linux kernel for Microsoft Azure Cloud systems - linux-bluefield: Linux kernel for NVIDIA BlueField platforms - linux-gcp: Linux kernel for Google Cloud Platform (GCP) systems - linux-gkeop: Linux kernel for Google Container Engine (GKE) 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-raspi: Linux kernel for Raspberry Pi systems - linux-xilinx-zynqmp: Linux kernel for Xilinx ZynqMP processors - linux-aws-5.4: Linux kernel for Amazon Web Services (AWS) systems - linux-azure-5.4: Linux kernel for Microsoft Azure cloud systems - linux-gcp-5.4: Linux kernel for Google Cloud Platform (GCP) systems - linux-hwe-5.4: Linux hardware enablement (HWE) kernel - linux-ibm-5.4: Linux kernel for IBM cloud systems - linux-oracle-5.4: Linux kernel for Oracle Cloud systems - linux-raspi-5.4: Linux kernel for Raspberry Pi systems Details: Seth Jenkins discovered that the Linux kernel did not properly perform address randomization for a per-cpu memory management structure. A local attacker could use this to expose sensitive information (kernel memory) or in conjunction with another kernel vulnerability. (CVE-2023-0597) Yu Hao and Weiteng Chen discovered that the Bluetooth HCI UART driver in the Linux kernel contained a race condition, leading to a null pointer dereference vulnerability. A local attacker could use this to cause a denial of service (system crash). (CVE-2023-31083) Lin Ma discovered that the Netlink Transformation (XFRM) subsystem in the Linux kernel contained a null pointer dereference vulnerability in some situations. A local privileged attacker could use this to cause a denial of service (system crash). (CVE-2023-3772) It was discovered that the Siano USB MDTV receiver device driver in the Linux kernel did not properly handle device initialization failures in certain situations, leading to a use-after-free vulnerability. A physically proximate attacker could use this cause a denial of service (system crash). (CVE-2023-4132)
Update Instructions
The problem can be corrected by updating your system to the following package versions: Ubuntu 20.04 LTS: linux-image-5.4.0-1033-xilinx-zynqmp 5.4.0-1033.37 linux-image-5.4.0-1060-ibm 5.4.0-1060.65 linux-image-5.4.0-1074-bluefield 5.4.0-1074.80 linux-image-5.4.0-1080-gkeop 5.4.0-1080.84 linux-image-5.4.0-1097-raspi 5.4.0-1097.109 linux-image-5.4.0-1102-kvm 5.4.0-1102.108 linux-image-5.4.0-1112-oracle 5.4.0-1112.121 linux-image-5.4.0-1113-aws 5.4.0-1113.123 linux-image-5.4.0-1117-gcp 5.4.0-1117.126 linux-image-5.4.0-1119-azure 5.4.0-1119.126 linux-image-5.4.0-166-generic 5.4.0-166.183 linux-image-5.4.0-166-generic-lpae 5.4.0-166.183 linux-image-5.4.0-166-lowlatency 5.4.0-166.183 linux-image-aws-lts-20.04 5.4.0.1113.110 linux-image-azure-lts-20.04 5.4.0.1119.112 linux-image-bluefield 5.4.0.1074.69 linux-image-gcp-lts-20.04 5.4.0.1117.119 linux-image-generic 5.4.0.166.163 linux-image-generic-lpae 5.4.0.166.163 linux-image-gkeop 5.4.0.1080.78 linux-image-gkeop-5.4 5.4.0.1080.78 linux-image-ibm-lts-20.04 5.4.0.1060.89 linux-image-kvm 5.4.0.1102.97 linux-image-lowlatency 5.4.0.166.163 linux-image-oem 5.4.0.166.163 linux-image-oem-osp1 5.4.0.166.163 linux-image-oracle-lts-20.04 5.4.0.1112.105 linux-image-raspi 5.4.0.1097.127 linux-image-raspi2 5.4.0.1097.127 linux-image-virtual 5.4.0.166.163 linux-image-xilinx-zynqmp 5.4.0.1033.33 Ubuntu 18.04 LTS (Available with Ubuntu Pro): linux-image-5.4.0-1060-ibm 5.4.0-1060.65~18.04.1 linux-image-5.4.0-1097-raspi 5.4.0-1097.109~18.04.2 linux-image-5.4.0-1112-oracle 5.4.0-1112.121~18.04.4 linux-image-5.4.0-1113-aws 5.4.0-1113.123~18.04.1 linux-image-5.4.0-1117-gcp 5.4.0-1117.126~18.04.1 linux-image-5.4.0-1119-azure 5.4.0-1119.126~18.04.2 linux-image-5.4.0-166-generic 5.4.0-166.183~18.04.2 linux-image-5.4.0-166-lowlatency 5.4.0-166.183~18.04.2 linux-image-aws 5.4.0.1113.91 linux-image-azure 5.4.0.1119.92 linux-image-gcp 5.4.0.1117.93 linux-image-generic-hwe-18.04 5.4.0.166.183~18.04.134 linux-image-ibm 5.4.0.1060.71 linux-image-lowlatency-hwe-18.04 5.4.0.166.183~18.04.134 linux-image-oem 5.4.0.166.183~18.04.134 linux-image-oem-osp1 5.4.0.166.183~18.04.134 linux-image-oracle 5.4.0.1112.121~18.04.84 linux-image-raspi-hwe-18.04 5.4.0.1097.94 linux-image-snapdragon-hwe-18.04 5.4.0.166.183~18.04.134 linux-image-virtual-hwe-18.04 5.4.0.166.183~18.04.134 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-6462-1
CVE-2023-0597, CVE-2023-31083, CVE-2023-3772, CVE-2023-4132
Package Information
https://launchpad.net/ubuntu/+source/linux/5.4.0-166.183 https://launchpad.net/ubuntu/+source/linux-aws/5.4.0-1113.123 https://launchpad.net/ubuntu/+source/linux-azure/5.4.0-1119.126 https://launchpad.net/ubuntu/+source/linux-bluefield/5.4.0-1074.80 https://launchpad.net/ubuntu/+source/linux-gcp/5.4.0-1117.126 https://launchpad.net/ubuntu/+source/linux-gkeop/5.4.0-1080.84 https://launchpad.net/ubuntu/+source/linux-ibm/5.4.0-1060.65 https://launchpad.net/ubuntu/+source/linux-kvm/5.4.0-1102.108 https://launchpad.net/ubuntu/+source/linux-oracle/5.4.0-1112.121 https://launchpad.net/ubuntu/+source/linux-raspi/5.4.0-1097.109 https://launchpad.net/ubuntu/+source/linux-xilinx-zynqmp/5.4.0-1033.37
