========================================================================== Ubuntu Security Notice USN-6464-1 October 31, 2023 linux, linux-aws, linux-aws-6.2, linux-azure, linux-azure-6.2, linux-azure-fde-6.2, linux-gcp, linux-gcp-6.2, linux-hwe-6.2, linux-kvm, linux-lowlatency, linux-lowlatency-hwe-6.2, linux-oracle, linux-raspi, linux-starfive vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 23.04 - Ubuntu 22.04 LTS 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-gcp: Linux kernel for Google Cloud Platform (GCP) systems - linux-kvm: Linux kernel for cloud environments - linux-lowlatency: Linux low latency kernel - linux-oracle: Linux kernel for Oracle Cloud systems - linux-raspi: Linux kernel for Raspberry Pi systems - linux-starfive: Linux kernel for StarFive processors - linux-aws-6.2: Linux kernel for Amazon Web Services (AWS) systems - linux-azure-6.2: Linux kernel for Microsoft Azure cloud systems - linux-azure-fde-6.2: Linux kernel for Microsoft Azure CVM cloud systems - linux-gcp-6.2: Linux kernel for Google Cloud Platform (GCP) systems - linux-hwe-6.2: Linux hardware enablement (HWE) kernel - linux-lowlatency-hwe-6.2: Linux low latency kernel Details: 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) Chih-Yen Chang discovered that the KSMBD implementation in the Linux kernel did not properly validate SMB request protocol IDs, leading to a out-of- bounds read vulnerability. A remote attacker could possibly use this to cause a denial of service (system crash). (CVE-2023-38430) Chih-Yen Chang discovered that the KSMBD implementation in the Linux kernel did not properly validate command payload size, leading to a out-of-bounds read vulnerability. A remote attacker could possibly use this to cause a denial of service (system crash). (CVE-2023-38432) It was discovered that the NFC implementation in the Linux kernel contained a use-after-free vulnerability when performing peer-to-peer communication in certain conditions. A privileged attacker could use this to cause a denial of service (system crash) or possibly expose sensitive information (kernel memory). (CVE-2023-3863) Laurence Wit discovered that the KSMBD implementation in the Linux kernel did not properly validate a buffer size in certain situations, leading to an out-of-bounds read vulnerability. A remote attacker could use this to cause a denial of service (system crash) or possibly expose sensitive information. (CVE-2023-3865) Laurence Wit discovered that the KSMBD implementation in the Linux kernel contained a null pointer dereference vulnerability when handling handling chained requests. A remote attacker could use this to cause a denial of service (system crash). (CVE-2023-3866) It was discovered that the KSMBD implementation in the Linux kernel did not properly handle session setup requests, leading to an out-of-bounds read vulnerability. A remote attacker could use this to expose sensitive information. (CVE-2023-3867) 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) It was discovered that a race condition existed in the Cypress touchscreen driver in the Linux kernel during device removal, leading to a use-after- free vulnerability. A physically proximate attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2023-4134) Thelford Williams discovered that the Ceph file system messenger protocol implementation in the Linux kernel did not properly validate frame segment length in certain situation, leading to a buffer overflow vulnerability. A remote attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2023-44466) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 23.04: linux-image-6.2.0-1008-starfive 6.2.0-1008.9 linux-image-6.2.0-1015-aws 6.2.0-1015.15 linux-image-6.2.0-1015-oracle 6.2.0-1015.15 linux-image-6.2.0-1016-azure 6.2.0-1016.16 linux-image-6.2.0-1016-kvm 6.2.0-1016.16 linux-image-6.2.0-1016-lowlatency 6.2.0-1016.16 linux-image-6.2.0-1016-lowlatency-64k 6.2.0-1016.16 linux-image-6.2.0-1016-raspi 6.2.0-1016.18 linux-image-6.2.0-1018-gcp 6.2.0-1018.20 linux-image-6.2.0-36-generic 6.2.0-36.37 linux-image-6.2.0-36-generic-64k 6.2.0-36.37 linux-image-6.2.0-36-generic-lpae 6.2.0-36.37 linux-image-aws 6.2.0.1015.16 linux-image-azure 6.2.0.1016.16 linux-image-gcp 6.2.0.1018.18 linux-image-generic 6.2.0.36.36 linux-image-generic-64k 6.2.0.36.36 linux-image-generic-lpae 6.2.0.36.36 linux-image-kvm 6.2.0.1016.16 linux-image-lowlatency 6.2.0.1016.16 linux-image-lowlatency-64k 6.2.0.1016.16 linux-image-oracle 6.2.0.1015.15 linux-image-raspi 6.2.0.1016.19 linux-image-raspi-nolpae 6.2.0.1016.19 linux-image-starfive 6.2.0.1008.11 linux-image-virtual 6.2.0.36.36 Ubuntu 22.04 LTS: linux-image-6.2.0-1015-aws 6.2.0-1015.15~22.04.1 linux-image-6.2.0-1016-azure 6.2.0-1016.16~22.04.1 linux-image-6.2.0-1016-azure-fde 6.2.0-1016.16~22.04.1.1 linux-image-6.2.0-1016-lowlatency 6.2.0-1016.16~22.04.1 linux-image-6.2.0-1016-lowlatency-64k 6.2.0-1016.16~22.04.1 linux-image-6.2.0-1018-gcp 6.2.0-1018.20~22.04.1 linux-image-6.2.0-36-generic 6.2.0-36.37~22.04.1 linux-image-6.2.0-36-generic-64k 6.2.0-36.37~22.04.1 linux-image-6.2.0-36-generic-lpae 6.2.0-36.37~22.04.1 linux-image-aws 6.2.0.1015.15~22.04.1 linux-image-azure 6.2.0.1016.16~22.04.1 linux-image-azure-fde 6.2.0.1016.16~22.04.1.13 linux-image-gcp 6.2.0.1018.20~22.04.1 linux-image-generic-64k-hwe-22.04 6.2.0.36.37~22.04.14 linux-image-generic-hwe-22.04 6.2.0.36.37~22.04.14 linux-image-generic-lpae-hwe-22.04 6.2.0.36.37~22.04.14 linux-image-lowlatency-64k-hwe-22.04 6.2.0.1016.16~22.04.13 linux-image-lowlatency-hwe-22.04 6.2.0.1016.16~22.04.13 linux-image-virtual-hwe-22.04 6.2.0.36.37~22.04.14 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-6464-1 CVE-2023-31083, CVE-2023-3772, CVE-2023-38430, CVE-2023-38432, CVE-2023-3863, CVE-2023-3865, CVE-2023-3866, CVE-2023-3867, CVE-2023-4132, CVE-2023-4134, CVE-2023-44466 Package Information: https://launchpad.net/ubuntu/+source/linux/6.2.0-36.37 https://launchpad.net/ubuntu/+source/linux-aws/6.2.0-1015.15 https://launchpad.net/ubuntu/+source/linux-azure/6.2.0-1016.16 https://launchpad.net/ubuntu/+source/linux-gcp/6.2.0-1018.20 https://launchpad.net/ubuntu/+source/linux-kvm/6.2.0-1016.16 https://launchpad.net/ubuntu/+source/linux-lowlatency/6.2.0-1016.16 https://launchpad.net/ubuntu/+source/linux-oracle/6.2.0-1015.15 https://launchpad.net/ubuntu/+source/linux-raspi/6.2.0-1016.18 https://launchpad.net/ubuntu/+source/linux-starfive/6.2.0-1008.9 https://launchpad.net/ubuntu/+source/linux-aws-6.2/6.2.0-1015.15~22.04.1 https://launchpad.net/ubuntu/+source/linux-azure-6.2/6.2.0-1016.16~22.04.1 https://launchpad.net/ubuntu/+source/linux-azure-fde-6.2/6.2.0-1016.16~22.04.1.1 https://launchpad.net/ubuntu/+source/linux-gcp-6.2/6.2.0-1018.20~22.04.1 https://launchpad.net/ubuntu/+source/linux-hwe-6.2/6.2.0-36.37~22.04.1 https://launchpad.net/ubuntu/+source/linux-lowlatency-hwe-6.2/6.2.0-1016.16~22.04.1