========================================================================== Ubuntu Security Notice USN-6625-1 February 07, 2024 linux, linux-aws, linux-aws-5.4, linux-azure, linux-azure-5.4, linux-bluefield, linux-gkeop, linux-hwe-5.4, linux-ibm, linux-ibm-5.4, linux-iot, linux-kvm, linux-oracle, linux-oracle-5.4, linux-xilinx-zynqmp vulnerabilities ========================================================================== 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-gkeop: Linux kernel for Google Container Engine (GKE) systems - linux-ibm: Linux kernel for IBM cloud systems - linux-iot: Linux kernel for IoT platforms - linux-kvm: Linux kernel for cloud environments - linux-oracle: Linux kernel for Oracle Cloud 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-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 Details: Marek Marczykowski-Górecki discovered that the Xen event channel infrastructure implementation in the Linux kernel contained a race condition. An attacker in a guest VM could possibly use this to cause a denial of service (paravirtualized device unavailability). (CVE-2023-34324) Zheng Wang discovered a use-after-free in the Renesas Ethernet AVB driver in the Linux kernel during device removal. A privileged attacker could use this to cause a denial of service (system crash). (CVE-2023-35827) It was discovered that a race condition existed in the Linux kernel when performing operations with kernel objects, leading to an out-of-bounds write. A local attacker could use this to cause a denial of service (system crash) or execute arbitrary code. (CVE-2023-45863) 黄思聪 discovered that the NFC Controller Interface (NCI) implementation in the Linux kernel did not properly handle certain memory allocation failure conditions, leading to a null pointer dereference vulnerability. A local attacker could use this to cause a denial of service (system crash). (CVE-2023-46343) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 20.04 LTS: linux-image-5.4.0-1030-iot 5.4.0-1030.31 linux-image-5.4.0-1037-xilinx-zynqmp 5.4.0-1037.41 linux-image-5.4.0-1065-ibm 5.4.0-1065.70 linux-image-5.4.0-1078-bluefield 5.4.0-1078.84 linux-image-5.4.0-1085-gkeop 5.4.0-1085.89 linux-image-5.4.0-1106-kvm 5.4.0-1106.113 linux-image-5.4.0-1117-oracle 5.4.0-1117.126 linux-image-5.4.0-1118-aws 5.4.0-1118.128 linux-image-5.4.0-1123-azure 5.4.0-1123.130 linux-image-5.4.0-171-generic 5.4.0-171.189 linux-image-5.4.0-171-generic-lpae 5.4.0-171.189 linux-image-5.4.0-171-lowlatency 5.4.0-171.189 linux-image-aws-lts-20.04 5.4.0.1118.115 linux-image-azure-lts-20.04 5.4.0.1123.116 linux-image-bluefield 5.4.0.1078.73 linux-image-generic 5.4.0.171.169 linux-image-generic-lpae 5.4.0.171.169 linux-image-gkeop 5.4.0.1085.83 linux-image-gkeop-5.4 5.4.0.1085.83 linux-image-ibm-lts-20.04 5.4.0.1065.94 linux-image-kvm 5.4.0.1106.102 linux-image-lowlatency 5.4.0.171.169 linux-image-oem 5.4.0.171.169 linux-image-oem-osp1 5.4.0.171.169 linux-image-oracle-lts-20.04 5.4.0.1117.110 linux-image-virtual 5.4.0.171.169 linux-image-xilinx-zynqmp 5.4.0.1037.37 Ubuntu 18.04 LTS (Available with Ubuntu Pro): linux-image-5.4.0-1065-ibm 5.4.0-1065.70~18.04.1 linux-image-5.4.0-1117-oracle 5.4.0-1117.126~18.04.1 linux-image-5.4.0-1118-aws 5.4.0-1118.128~18.04.1 linux-image-5.4.0-1123-azure 5.4.0-1123.130~18.04.1 linux-image-5.4.0-171-generic 5.4.0-171.189~18.04.1 linux-image-5.4.0-171-lowlatency 5.4.0-171.189~18.04.1 linux-image-aws 5.4.0.1118.96 linux-image-azure 5.4.0.1123.96 linux-image-generic-hwe-18.04 5.4.0.171.189~18.04.139 linux-image-ibm 5.4.0.1065.75 linux-image-lowlatency-hwe-18.04 5.4.0.171.189~18.04.139 linux-image-oem 5.4.0.171.189~18.04.139 linux-image-oem-osp1 5.4.0.171.189~18.04.139 linux-image-oracle 5.4.0.1117.126~18.04.89 linux-image-snapdragon-hwe-18.04 5.4.0.171.189~18.04.139 linux-image-virtual-hwe-18.04 5.4.0.171.189~18.04.139 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-6625-1 CVE-2023-34324, CVE-2023-35827, CVE-2023-45863, CVE-2023-46343 Package Information: https://launchpad.net/ubuntu/+source/linux/5.4.0-171.189 https://launchpad.net/ubuntu/+source/linux-aws/5.4.0-1118.128 https://launchpad.net/ubuntu/+source/linux-azure/5.4.0-1123.130 https://launchpad.net/ubuntu/+source/linux-bluefield/5.4.0-1078.84 https://launchpad.net/ubuntu/+source/linux-gkeop/5.4.0-1085.89 https://launchpad.net/ubuntu/+source/linux-ibm/5.4.0-1065.70 https://launchpad.net/ubuntu/+source/linux-iot/5.4.0-1030.31 https://launchpad.net/ubuntu/+source/linux-kvm/5.4.0-1106.113 https://launchpad.net/ubuntu/+source/linux-oracle/5.4.0-1117.126 https://launchpad.net/ubuntu/+source/linux-xilinx-zynqmp/5.4.0-1037.41