========================================================================== Ubuntu Security Notice USN-6185-1 June 22, 2023 linux-aws, linux-azure, linux-bluefield, linux-gcp, linux-gke, linux-gkeop, linux-ibm, linux-kvm, linux-oracle, linux-raspi vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 20.04 LTS Summary: Several security issues were fixed in the Linux kernel. Software Description: - 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-gke: Linux kernel for Google Container Engine (GKE) systems - linux-gkeop: Linux kernel for Google Container Engine (GKE) systems - linux-ibm: Linux kernel for IBM cloud systems - linux-kvm: Linux kernel for cloud environments - linux-oracle: Linux kernel for Oracle Cloud systems - linux-raspi: Linux kernel for Raspberry Pi systems Details: It was discovered that the TUN/TAP driver in the Linux kernel did not properly initialize socket data. A local attacker could use this to cause a denial of service (system crash). (CVE-2023-1076) It was discovered that the Real-Time Scheduling Class implementation 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). (CVE-2023-1077) It was discovered that the ASUS HID driver in the Linux kernel did not properly handle device removal, leading to a use-after-free vulnerability. A local attacker with physical access could plug in a specially crafted USB device to cause a denial of service (system crash). (CVE-2023-1079) It was discovered that the Xircom PCMCIA network device driver in the Linux kernel did not properly handle device removal events. A physically proximate attacker could use this to cause a denial of service (system crash). (CVE-2023-1670) It was discovered that a race condition existed in the Xen transport layer implementation for the 9P file system protocol in the Linux kernel, leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service (guest crash) or expose sensitive information (guest kernel memory). (CVE-2023-1859) Jose Oliveira and Rodrigo Branco discovered that the Spectre Variant 2 mitigations with prctl syscall were insufficient in some situations. A local attacker could possibly use this to expose sensitive information. (CVE-2023-1998) It was discovered that the BigBen Interactive Kids' gamepad driver in the Linux kernel did not properly handle device removal, leading to a use- after-free vulnerability. A local attacker with physical access could plug in a specially crafted USB device to cause a denial of service (system crash). (CVE-2023-25012) It was discovered that a use-after-free vulnerability existed in the HFS+ file system implementation in the Linux kernel. A local attacker could possibly use this to cause a denial of service (system crash). (CVE-2023-2985) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 20.04 LTS: linux-image-5.4.0-1051-ibm 5.4.0-1051.56 linux-image-5.4.0-1065-bluefield 5.4.0-1065.71 linux-image-5.4.0-1071-gkeop 5.4.0-1071.75 linux-image-5.4.0-1088-raspi 5.4.0-1088.99 linux-image-5.4.0-1093-kvm 5.4.0-1093.99 linux-image-5.4.0-1102-gke 5.4.0-1102.109 linux-image-5.4.0-1103-oracle 5.4.0-1103.112 linux-image-5.4.0-1104-aws 5.4.0-1104.112 linux-image-5.4.0-1107-gcp 5.4.0-1107.116 linux-image-5.4.0-1110-azure 5.4.0-1110.116 linux-image-aws-lts-20.04 5.4.0.1104.101 linux-image-azure-lts-20.04 5.4.0.1110.103 linux-image-bluefield 5.4.0.1065.60 linux-image-gcp-lts-20.04 5.4.0.1107.109 linux-image-gke 5.4.0.1102.107 linux-image-gke-5.4 5.4.0.1102.107 linux-image-gkeop 5.4.0.1071.69 linux-image-gkeop-5.4 5.4.0.1071.69 linux-image-ibm 5.4.0.1051.77 linux-image-ibm-lts-20.04 5.4.0.1051.77 linux-image-kvm 5.4.0.1093.88 linux-image-oracle-lts-20.04 5.4.0.1103.96 linux-image-raspi 5.4.0.1088.118 linux-image-raspi2 5.4.0.1088.118 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-6185-1 CVE-2023-1076, CVE-2023-1077, CVE-2023-1079, CVE-2023-1670, CVE-2023-1859, CVE-2023-1998, CVE-2023-25012, CVE-2023-2985 Package Information: https://launchpad.net/ubuntu/+source/linux-aws/5.4.0-1104.112 https://launchpad.net/ubuntu/+source/linux-azure/5.4.0-1110.116 https://launchpad.net/ubuntu/+source/linux-bluefield/5.4.0-1065.71 https://launchpad.net/ubuntu/+source/linux-gcp/5.4.0-1107.116 https://launchpad.net/ubuntu/+source/linux-gke/5.4.0-1102.109 https://launchpad.net/ubuntu/+source/linux-gkeop/5.4.0-1071.75 https://launchpad.net/ubuntu/+source/linux-ibm/5.4.0-1051.56 https://launchpad.net/ubuntu/+source/linux-kvm/5.4.0-1093.99 https://launchpad.net/ubuntu/+source/linux-oracle/5.4.0-1103.112 https://launchpad.net/ubuntu/+source/linux-raspi/5.4.0-1088.99