========================================================================== Ubuntu Security Notice USN-6605-1 January 25, 2024
linux, linux-aws, linux-aws-5.4, linux-azure, linux-azure-5.4, linux-bluefield, linux-gcp, linux-gcp-5.4, linux-gkeop, linux-hwe-5.4, linux-ibm, linux-ibm-5.4, linux-iot, linux-oracle, linux-oracle-5.4, linux-raspi, linux-raspi-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-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-iot: Linux kernel for IoT platforms - 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: Lin Ma discovered that the netfilter subsystem in the Linux kernel did not properly validate network family support while creating a new netfilter table. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. (CVE-2023-6040) It was discovered that the CIFS network file system implementation in the Linux kernel did not properly validate the server frame size in certain situation, leading to an out-of-bounds read vulnerability. An attacker could use this to construct a malicious CIFS image that, when operated on, could cause a denial of service (system crash) or possibly expose sensitive information. (CVE-2023-6606) Budimir Markovic, Lucas De Marchi, and Pengfei Xu discovered that the perf subsystem in the Linux kernel did not properly validate all event sizes when attaching new events, leading to 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-2023-6931) It was discovered that the IGMP protocol implementation in the Linux kernel contained a race condition, 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-2023-6932) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 20.04 LTS: linux-image-5.4.0-1029-iot 5.4.0-1029.30 linux-image-5.4.0-1036-xilinx-zynqmp 5.4.0-1036.40 linux-image-5.4.0-1064-ibm 5.4.0-1064.69 linux-image-5.4.0-1077-bluefield 5.4.0-1077.83 linux-image-5.4.0-1084-gkeop 5.4.0-1084.88 linux-image-5.4.0-1101-raspi 5.4.0-1101.113 linux-image-5.4.0-1116-oracle 5.4.0-1116.125 linux-image-5.4.0-1117-aws 5.4.0-1117.127 linux-image-5.4.0-1121-gcp 5.4.0-1121.130 linux-image-5.4.0-1122-azure 5.4.0-1122.129 linux-image-5.4.0-170-generic 5.4.0-170.188 linux-image-5.4.0-170-generic-lpae 5.4.0-170.188 linux-image-5.4.0-170-lowlatency 5.4.0-170.188 linux-image-aws-lts-20.04 5.4.0.1117.114 linux-image-azure-lts-20.04 5.4.0.1122.115 linux-image-bluefield 5.4.0.1077.72 linux-image-gcp-lts-20.04 5.4.0.1121.123 linux-image-generic 5.4.0.170.168 linux-image-generic-lpae 5.4.0.170.168 linux-image-gkeop 5.4.0.1084.82 linux-image-gkeop-5.4 5.4.0.1084.82 linux-image-ibm-lts-20.04 5.4.0.1064.93 linux-image-lowlatency 5.4.0.170.168 linux-image-oem 5.4.0.170.168 linux-image-oem-osp1 5.4.0.170.168 linux-image-oracle-lts-20.04 5.4.0.1116.109 linux-image-raspi 5.4.0.1101.131 linux-image-raspi2 5.4.0.1101.131 linux-image-virtual 5.4.0.170.168 linux-image-xilinx-zynqmp 5.4.0.1036.36 Ubuntu 18.04 LTS (Available with Ubuntu Pro): linux-image-5.4.0-1064-ibm 5.4.0-1064.69~18.04.1 linux-image-5.4.0-1101-raspi 5.4.0-1101.113~18.04.1 linux-image-5.4.0-1116-oracle 5.4.0-1116.125~18.04.1 linux-image-5.4.0-1117-aws 5.4.0-1117.127~18.04.1 linux-image-5.4.0-1121-gcp 5.4.0-1121.130~18.04.1 linux-image-5.4.0-1122-azure 5.4.0-1122.129~18.04.1 linux-image-5.4.0-170-generic 5.4.0-170.188~18.04.1 linux-image-5.4.0-170-lowlatency 5.4.0-170.188~18.04.1 linux-image-aws 5.4.0.1117.95 linux-image-azure 5.4.0.1122.95 linux-image-gcp 5.4.0.1121.97 linux-image-generic-hwe-18.04 5.4.0.170.188~18.04.138 linux-image-ibm 5.4.0.1064.74 linux-image-lowlatency-hwe-18.04 5.4.0.170.188~18.04.138 linux-image-oem 5.4.0.170.188~18.04.138 linux-image-oem-osp1 5.4.0.170.188~18.04.138 linux-image-oracle 5.4.0.1116.125~18.04.88 linux-image-raspi-hwe-18.04 5.4.0.1101.98 linux-image-snapdragon-hwe-18.04 5.4.0.170.188~18.04.138 linux-image-virtual-hwe-18.04 5.4.0.170.188~18.04.138 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-6605-1 CVE-2023-6040, CVE-2023-6606, CVE-2023-6931, CVE-2023-6932 Package Information: https://launchpad.net/ubuntu/+source/linux/5.4.0-170.188 https://launchpad.net/ubuntu/+source/linux-aws/5.4.0-1117.127 https://launchpad.net/ubuntu/+source/linux-azure/5.4.0-1122.129 https://launchpad.net/ubuntu/+source/linux-bluefield/5.4.0-1077.83 https://launchpad.net/ubuntu/+source/linux-gcp/5.4.0-1121.130 https://launchpad.net/ubuntu/+source/linux-gkeop/5.4.0-1084.88 https://launchpad.net/ubuntu/+source/linux-ibm/5.4.0-1064.69 https://launchpad.net/ubuntu/+source/linux-iot/5.4.0-1029.30 https://launchpad.net/ubuntu/+source/linux-oracle/5.4.0-1116.125 https://launchpad.net/ubuntu/+source/linux-raspi/5.4.0-1101.113 https://launchpad.net/ubuntu/+source/linux-xilinx-zynqmp/5.4.0-1036.40
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