========================================================================== Ubuntu Security Notice USN-6534-1 December 05, 2023 linux, linux-aws, linux-aws-6.2, linux-azure, linux-azure-6.2, linux-azure-fde-6.2, linux-lowlatency, 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-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 Details: It was discovered that the USB subsystem in the Linux kernel contained a race condition while handling device descriptors in certain situations, leading to a out-of-bounds read vulnerability. A local attacker could possibly use this to cause a denial of service (system crash). (CVE-2023-37453) Lin Ma discovered that the Netlink Transformation (XFRM) subsystem in the Linux kernel did not properly initialize a policy data structure, leading to an out-of-bounds vulnerability. A local privileged attacker could use this to cause a denial of service (system crash) or possibly expose sensitive information (kernel memory). (CVE-2023-3773) Lucas Leong discovered that the netfilter subsystem in the Linux kernel did not properly validate some attributes passed from userspace. A local attacker could use this to cause a denial of service (system crash) or possibly expose sensitive information (kernel memory). (CVE-2023-39189) Sunjoo Park discovered that the netfilter subsystem in the Linux kernel did not properly validate u32 packets content, leading to an out-of-bounds read vulnerability. A local attacker could use this to cause a denial of service (system crash) or possibly expose sensitive information. (CVE-2023-39192) Lucas Leong discovered that the netfilter subsystem in the Linux kernel did not properly validate SCTP data, leading to an out-of-bounds read vulnerability. A local attacker could use this to cause a denial of service (system crash) or possibly expose sensitive information. (CVE-2023-39193) Lucas Leong discovered that the Netlink Transformation (XFRM) subsystem in the Linux kernel did not properly handle state filters, leading to an out- of-bounds read vulnerability. A privileged local attacker could use this to cause a denial of service (system crash) or possibly expose sensitive information. (CVE-2023-39194) It was discovered that a race condition existed in QXL virtual GPU driver in the Linux kernel, 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-2023-39198) Kyle Zeng discovered that the IPv4 implementation in the Linux kernel did not properly handle socket buffers (skb) when performing IP routing in certain circumstances, leading to a null pointer dereference vulnerability. A privileged attacker could use this to cause a denial of service (system crash). (CVE-2023-42754) Jason Wang discovered that the virtio ring implementation in the Linux kernel did not properly handle iov buffers in some situations. A local attacker in a guest VM could use this to cause a denial of service (host system crash). (CVE-2023-5158) Alon Zahavi discovered that the NVMe-oF/TCP subsystem in the Linux kernel did not properly handle queue initialization failures in certain situations, leading to a use-after-free vulnerability. A remote attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2023-5178) Budimir Markovic discovered that the perf subsystem in the Linux kernel did not properly handle event groups, 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-2023-5717) It was discovered that the Microchip USB Ethernet driver in the Linux kernel contained a race condition 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). (CVE-2023-6039) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 23.04: linux-image-6.2.0-1010-starfive 6.2.0-1010.11 linux-image-6.2.0-1017-aws 6.2.0-1017.17 linux-image-6.2.0-1017-oracle 6.2.0-1017.18 linux-image-6.2.0-1018-azure 6.2.0-1018.18 linux-image-6.2.0-1018-lowlatency 6.2.0-1018.18 linux-image-6.2.0-1018-lowlatency-64k 6.2.0-1018.18 linux-image-6.2.0-1018-raspi 6.2.0-1018.20 linux-image-6.2.0-39-generic 6.2.0-39.40 linux-image-6.2.0-39-generic-64k 6.2.0-39.40 linux-image-6.2.0-39-generic-lpae 6.2.0-39.40 linux-image-aws 6.2.0.1017.18 linux-image-azure 6.2.0.1018.18 linux-image-generic 6.2.0.39.39 linux-image-generic-64k 6.2.0.39.39 linux-image-generic-lpae 6.2.0.39.39 linux-image-lowlatency 6.2.0.1018.18 linux-image-lowlatency-64k 6.2.0.1018.18 linux-image-oracle 6.2.0.1017.17 linux-image-raspi 6.2.0.1018.21 linux-image-raspi-nolpae 6.2.0.1018.21 linux-image-starfive 6.2.0.1010.13 linux-image-virtual 6.2.0.39.39 Ubuntu 22.04 LTS: linux-image-6.2.0-1017-aws 6.2.0-1017.17~22.04.1 linux-image-6.2.0-1018-azure 6.2.0-1018.18~22.04.1 linux-image-6.2.0-1018-azure-fde 6.2.0-1018.18~22.04.1.1 linux-image-aws 6.2.0.1017.17~22.04.1 linux-image-azure 6.2.0.1018.18~22.04.1 linux-image-azure-fde 6.2.0.1018.18~22.04.1.15 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-6534-1 CVE-2023-37453, CVE-2023-3773, CVE-2023-39189, CVE-2023-39192, CVE-2023-39193, CVE-2023-39194, CVE-2023-39198, CVE-2023-42754, CVE-2023-5158, CVE-2023-5178, CVE-2023-5717, CVE-2023-6039 Package Information: https://launchpad.net/ubuntu/+source/linux/6.2.0-39.40 https://launchpad.net/ubuntu/+source/linux-aws/6.2.0-1017.17 https://launchpad.net/ubuntu/+source/linux-azure/6.2.0-1018.18 https://launchpad.net/ubuntu/+source/linux-lowlatency/6.2.0-1018.18 https://launchpad.net/ubuntu/+source/linux-oracle/6.2.0-1017.18 https://launchpad.net/ubuntu/+source/linux-raspi/6.2.0-1018.20 https://launchpad.net/ubuntu/+source/linux-starfive/6.2.0-1010.11 https://launchpad.net/ubuntu/+source/linux-aws-6.2/6.2.0-1017.17~22.04.1 https://launchpad.net/ubuntu/+source/linux-azure-6.2/6.2.0-1018.18~22.04.1 https://launchpad.net/ubuntu/+source/linux-azure-fde-6.2/6.2.0-1018.18~22.04.1.1