========================================================================== Ubuntu Security Notice USN-6651-1 February 23, 2024 linux, linux-aws, linux-gcp, linux-hwe-6.5, linux-laptop, linux-oracle, linux-raspi, linux-starfive vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 23.10 - 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-gcp: Linux kernel for Google Cloud Platform (GCP) systems - linux-laptop: Linux kernel for Lenovo X13s ARM laptops - linux-oracle: Linux kernel for Oracle Cloud systems - linux-raspi: Linux kernel for Raspberry Pi systems - linux-starfive: Linux kernel for StarFive processors - linux-hwe-6.5: Linux hardware enablement (HWE) kernel Details: It was discovered that a race condition existed in the ATM (Asynchronous Transfer Mode) subsystem of 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-2023-51780) It was discovered that a race condition existed in the AppleTalk networking subsystem of 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-2023-51781) Zhenghan Wang discovered that the generic ID allocator implementation in the Linux kernel did not properly check for null bitmap when releasing IDs. A local attacker could use this to cause a denial of service (system crash). (CVE-2023-6915) Robert Morris discovered that the CIFS network file system implementation in the Linux kernel did not properly validate certain server commands fields, leading to an out-of-bounds read vulnerability. An attacker could use this to cause a denial of service (system crash) or possibly expose sensitive information. (CVE-2024-0565) Jann Horn discovered that the io_uring subsystem in the Linux kernel did not properly handle the release of certain buffer rings. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2024-0582) Jann Horn discovered that the TLS subsystem in the Linux kernel did not properly handle spliced messages, 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-2024-0646) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 23.10: linux-image-6.5.0-1008-starfive 6.5.0-1008.9 linux-image-6.5.0-1010-laptop 6.5.0-1010.13 linux-image-6.5.0-1011-raspi 6.5.0-1011.14 linux-image-6.5.0-1014-aws 6.5.0-1014.14 linux-image-6.5.0-1014-gcp 6.5.0-1014.14 linux-image-6.5.0-1016-oracle 6.5.0-1016.16 linux-image-6.5.0-21-generic 6.5.0-21.21 linux-image-6.5.0-21-generic-64k 6.5.0-21.21 linux-image-aws 6.5.0.1014.14 linux-image-gcp 6.5.0.1014.14 linux-image-generic 6.5.0.21.20 linux-image-generic-64k 6.5.0.21.20 linux-image-generic-lpae 6.5.0.21.20 linux-image-kvm 6.5.0.21.20 linux-image-laptop-23.10 6.5.0.1010.13 linux-image-oracle 6.5.0.1016.16 linux-image-raspi 6.5.0.1011.12 linux-image-raspi-nolpae 6.5.0.1011.12 linux-image-starfive 6.5.0.1008.10 linux-image-virtual 6.5.0.21.20 Ubuntu 22.04 LTS: linux-image-6.5.0-21-generic 6.5.0-21.21~22.04.1 linux-image-6.5.0-21-generic-64k 6.5.0-21.21~22.04.1 linux-image-generic-64k-hwe-22.04 6.5.0.21.21~22.04.11 linux-image-generic-hwe-22.04 6.5.0.21.21~22.04.11 linux-image-virtual-hwe-22.04 6.5.0.21.21~22.04.11 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-6651-1 CVE-2023-51780, CVE-2023-51781, CVE-2023-6915, CVE-2024-0565, CVE-2024-0582, CVE-2024-0646 Package Information: https://launchpad.net/ubuntu/+source/linux/6.5.0-21.21 https://launchpad.net/ubuntu/+source/linux-aws/6.5.0-1014.14 https://launchpad.net/ubuntu/+source/linux-gcp/6.5.0-1014.14 https://launchpad.net/ubuntu/+source/linux-laptop/6.5.0-1010.13 https://launchpad.net/ubuntu/+source/linux-oracle/6.5.0-1016.16 https://launchpad.net/ubuntu/+source/linux-raspi/6.5.0-1011.14 https://launchpad.net/ubuntu/+source/linux-starfive/6.5.0-1008.9 https://launchpad.net/ubuntu/+source/linux-hwe-6.5/6.5.0-21.21~22.04.1