========================================================================== Ubuntu Security Notice USN-6080-1 May 16, 2023 linux, linux-aws, linux-aws-5.15, linux-azure, linux-azure-5.15, linux-azure-fde, linux-azure-fde-5.15, linux-hwe-5.15, linux-ibm, linux-kvm, linux-lowlatency, linux-lowlatency-hwe-5.15, linux-oracle vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 22.04 LTS - Ubuntu 20.04 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-azure-fde: Linux kernel for Microsoft Azure CVM cloud systems - linux-ibm: Linux kernel for IBM cloud systems - linux-kvm: Linux kernel for cloud environments - linux-lowlatency: Linux low latency kernel - linux-oracle: Linux kernel for Oracle Cloud systems - linux-aws-5.15: Linux kernel for Amazon Web Services (AWS) systems - linux-azure-5.15: Linux kernel for Microsoft Azure cloud systems - linux-azure-fde-5.15: Linux kernel for Microsoft Azure CVM cloud systems - linux-hwe-5.15: Linux hardware enablement (HWE) kernel - linux-lowlatency-hwe-5.15: Linux low latency kernel Details: It was discovered that some AMD x86-64 processors with SMT enabled could speculatively execute instructions using a return address from a sibling thread. A local attacker could possibly use this to expose sensitive information. (CVE-2022-27672) Zheng Wang discovered that the Intel i915 graphics driver in the Linux kernel did not properly handle certain error conditions, leading to a double-free. A local attacker could possibly use this to cause a denial of service (system crash). (CVE-2022-3707) Jordy Zomer and Alexandra Sandulescu discovered that the Linux kernel did not properly implement speculative execution barriers in usercopy functions in certain situations. A local attacker could use this to expose sensitive information (kernel memory). (CVE-2023-0459) It was discovered that the TLS subsystem in the Linux kernel contained a type confusion vulnerability in some situations. A local attacker could use this to cause a denial of service (system crash) or possibly expose sensitive information. (CVE-2023-1075) It was discovered that the Reliable Datagram Sockets (RDS) protocol implementation in the Linux kernel contained a type confusion vulnerability in some situations. An attacker could use this to cause a denial of service (system crash). (CVE-2023-1078) Xingyuan Mo discovered that the x86 KVM implementation in the Linux kernel did not properly initialize some data structures. A local attacker could use this to expose sensitive information (kernel memory). (CVE-2023-1513) It was discovered that the Android Binder IPC subsystem in the Linux kernel did not properly validate inputs in some situations, 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-2023-20938) It was discovered that a use-after-free vulnerability existed in the iSCSI TCP implementation in the Linux kernel. A local attacker could possibly use this to cause a denial of service (system crash). (CVE-2023-2162) It was discovered that the NET/ROM protocol implementation in the Linux kernel contained a race condition in some situations, 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-2023-32269) Duoming Zhou discovered that a race condition existed in the infrared receiver/transceiver driver in the Linux kernel, leading to a use-after- free vulnerability. A privileged attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2023-1118) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 22.04 LTS: linux-image-5.15.0-1030-ibm 5.15.0-1030.33 linux-image-5.15.0-1033-kvm 5.15.0-1033.38 linux-image-5.15.0-1035-oracle 5.15.0-1035.41 linux-image-5.15.0-1036-aws 5.15.0-1036.40 linux-image-5.15.0-1038-azure 5.15.0-1038.45 linux-image-5.15.0-1038-azure-fde 5.15.0-1038.45.1 linux-image-5.15.0-72-generic 5.15.0-72.79 linux-image-5.15.0-72-generic-64k 5.15.0-72.79 linux-image-5.15.0-72-generic-lpae 5.15.0-72.79 linux-image-5.15.0-72-lowlatency 5.15.0-72.79 linux-image-5.15.0-72-lowlatency-64k 5.15.0-72.79 linux-image-aws-lts-22.04 5.15.0.1036.35 linux-image-azure 5.15.0.1038.34 linux-image-azure-fde 5.15.0.1038.45.15 linux-image-azure-lts-22.04 5.15.0.1038.34 linux-image-generic 5.15.0.72.70 linux-image-generic-64k 5.15.0.72.70 linux-image-generic-lpae 5.15.0.72.70 linux-image-ibm 5.15.0.1030.26 linux-image-kvm 5.15.0.1033.29 linux-image-lowlatency 5.15.0.72.77 linux-image-lowlatency-64k 5.15.0.72.77 linux-image-oracle 5.15.0.1035.30 linux-image-virtual 5.15.0.72.70 Ubuntu 20.04 LTS: linux-image-5.15.0-1036-aws 5.15.0-1036.40~20.04.1 linux-image-5.15.0-1038-azure 5.15.0-1038.45~20.04.1 linux-image-5.15.0-1038-azure-fde 5.15.0-1038.45~20.04.1.1 linux-image-5.15.0-72-generic 5.15.0-72.79~20.04.1 linux-image-5.15.0-72-generic-64k 5.15.0-72.79~20.04.1 linux-image-5.15.0-72-generic-lpae 5.15.0-72.79~20.04.1 linux-image-5.15.0-72-lowlatency 5.15.0-72.79~20.04.1 linux-image-5.15.0-72-lowlatency-64k 5.15.0-72.79~20.04.1 linux-image-aws 5.15.0.1036.40~20.04.25 linux-image-azure 5.15.0.1038.45~20.04.28 linux-image-azure-cvm 5.15.0.1038.45~20.04.28 linux-image-azure-fde 5.15.0.1038.45~20.04.1.17 linux-image-generic-64k-hwe-20.04 5.15.0.72.79~20.04.33 linux-image-generic-hwe-20.04 5.15.0.72.79~20.04.33 linux-image-generic-lpae-hwe-20.04 5.15.0.72.79~20.04.33 linux-image-lowlatency-64k-hwe-20.04 5.15.0.72.79~20.04.30 linux-image-lowlatency-hwe-20.04 5.15.0.72.79~20.04.30 linux-image-oem-20.04 5.15.0.72.79~20.04.33 linux-image-oem-20.04b 5.15.0.72.79~20.04.33 linux-image-oem-20.04c 5.15.0.72.79~20.04.33 linux-image-oem-20.04d 5.15.0.72.79~20.04.33 linux-image-virtual-hwe-20.04 5.15.0.72.79~20.04.33 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-6080-1 CVE-2022-27672, CVE-2022-3707, CVE-2023-0459, CVE-2023-1075, CVE-2023-1078, CVE-2023-1118, CVE-2023-1513, CVE-2023-20938, CVE-2023-2162, CVE-2023-32269 Package Information: https://launchpad.net/ubuntu/+source/linux/5.15.0-72.79 https://launchpad.net/ubuntu/+source/linux-aws/5.15.0-1036.40 https://launchpad.net/ubuntu/+source/linux-azure/5.15.0-1038.45 https://launchpad.net/ubuntu/+source/linux-azure-fde/5.15.0-1038.45.1 https://launchpad.net/ubuntu/+source/linux-ibm/5.15.0-1030.33 https://launchpad.net/ubuntu/+source/linux-kvm/5.15.0-1033.38 https://launchpad.net/ubuntu/+source/linux-lowlatency/5.15.0-72.79 https://launchpad.net/ubuntu/+source/linux-oracle/5.15.0-1035.41 https://launchpad.net/ubuntu/+source/linux-aws-5.15/5.15.0-1036.40~20.04.1 https://launchpad.net/ubuntu/+source/linux-azure-5.15/5.15.0-1038.45~20.04.1 https://launchpad.net/ubuntu/+source/linux-azure-fde-5.15/5.15.0-1038.45~20.04.1.1 https://launchpad.net/ubuntu/+source/linux-hwe-5.15/5.15.0-72.79~20.04.1 https://launchpad.net/ubuntu/+source/linux-lowlatency-hwe-5.15/5.15.0-72.79~20.04.1