========================================================================== Ubuntu Security Notice USN-6283-1 August 11, 2023 linux, linux-aws, linux-azure, linux-gcp, linux-ibm, linux-kvm, linux-lowlatency, linux-oracle, linux-raspi vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 23.04 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-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-raspi: Linux kernel for Raspberry Pi systems Details: Ruihan Li discovered that the bluetooth subsystem in the Linux kernel did not properly perform permissions checks when handling HCI sockets. A physically proximate attacker could use this to cause a denial of service (bluetooth communication). (CVE-2023-2002) Zheng Zhang discovered that the device-mapper implementation in the Linux kernel did not properly handle locking during table_clear() operations. A local attacker could use this to cause a denial of service (kernel deadlock). (CVE-2023-2269) It was discovered that the Ricoh R5C592 MemoryStick card reader driver in the Linux kernel contained a race condition during module unload, 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-2023-3141) Quentin Minster discovered that the KSMBD implementation in the Linux kernel did not properly validate pointers in some situations, leading to a null pointer dereference vulnerability. A remote attacker could use this to cause a denial of service (system crash). (CVE-2023-32248) Quentin Minster discovered that a race condition existed in the KSMBD implementation in the Linux kernel, 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-2023-32254) It was discovered that the kernel->user space relay implementation in the Linux kernel did not properly perform certain buffer calculations, leading to an out-of-bounds read vulnerability. A local attacker could use this to cause a denial of service (system crash) or expose sensitive information (kernel memory). (CVE-2023-3268) It was discovered that the QCOM CPUFreq HW driver in the Linux kernel on ARM processors did not properly handle device unbind. A local attacker could use this to cause a denial of service (system crash). (CVE-2023-3312) It was discovered that the MediaTek MT7921E (PCIe) WiFi driver in the Linux kernel contained a use-after-free vulnerability when querying the firmware features of the device. A local attacker could use this to cause a denial of service (system crash). (CVE-2023-3317) It was discovered that the video4linux driver for Philips based TV cards 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) or possibly execute arbitrary code. (CVE-2023-35823) It was discovered that the SDMC DM1105 PCI device 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) or possibly execute arbitrary code. (CVE-2023-35824) It was discovered that the Allwinner Cedar video engine driver in the Linux kernel contained a race condition during device removal, 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-2023-35826) It was discovered that the Renesas USB controller driver in the Linux kernel contained a race condition during device removal, 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-2023-35828) It was discovered that the Rockchip Video Decoder IP driver in the Linux kernel contained a race condition during device removal, 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-2023-35829) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 23.04: linux-image-6.2.0-1007-ibm 6.2.0-1007.7 linux-image-6.2.0-1009-aws 6.2.0-1009.9 linux-image-6.2.0-1009-azure 6.2.0-1009.9 linux-image-6.2.0-1009-oracle 6.2.0-1009.9 linux-image-6.2.0-1010-kvm 6.2.0-1010.10 linux-image-6.2.0-1010-lowlatency 6.2.0-1010.10 linux-image-6.2.0-1010-lowlatency-64k 6.2.0-1010.10 linux-image-6.2.0-1010-raspi 6.2.0-1010.12 linux-image-6.2.0-1011-gcp 6.2.0-1011.11 linux-image-6.2.0-27-generic 6.2.0-27.28 linux-image-6.2.0-27-generic-64k 6.2.0-27.28 linux-image-6.2.0-27-generic-lpae 6.2.0-27.28 linux-image-aws 6.2.0.1009.10 linux-image-azure 6.2.0.1009.9 linux-image-gcp 6.2.0.1011.11 linux-image-generic 6.2.0.27.27 linux-image-generic-64k 6.2.0.27.27 linux-image-generic-lpae 6.2.0.27.27 linux-image-ibm 6.2.0.1007.7 linux-image-kvm 6.2.0.1010.10 linux-image-lowlatency 6.2.0.1010.10 linux-image-lowlatency-64k 6.2.0.1010.10 linux-image-oracle 6.2.0.1009.9 linux-image-raspi 6.2.0.1010.13 linux-image-raspi-nolpae 6.2.0.1010.13 linux-image-virtual 6.2.0.27.27 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-6283-1 CVE-2023-2002, CVE-2023-2269, CVE-2023-3141, CVE-2023-32248, CVE-2023-32254, CVE-2023-3268, CVE-2023-3312, CVE-2023-3317, CVE-2023-35823, CVE-2023-35824, CVE-2023-35826, CVE-2023-35828, CVE-2023-35829 Package Information: https://launchpad.net/ubuntu/+source/linux/6.2.0-27.28 https://launchpad.net/ubuntu/+source/linux-aws/6.2.0-1009.9 https://launchpad.net/ubuntu/+source/linux-azure/6.2.0-1009.9 https://launchpad.net/ubuntu/+source/linux-gcp/6.2.0-1011.11 https://launchpad.net/ubuntu/+source/linux-ibm/6.2.0-1007.7 https://launchpad.net/ubuntu/+source/linux-kvm/6.2.0-1010.10 https://launchpad.net/ubuntu/+source/linux-lowlatency/6.2.0-1010.10 https://launchpad.net/ubuntu/+source/linux-oracle/6.2.0-1009.9 https://launchpad.net/ubuntu/+source/linux-raspi/6.2.0-1010.12