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Ubuntu 22.04 LTS USN-6339-4: Intel IoTg Kernel Denial of Service Issues

Several security issues were fixed in the Linux kernel.. ========================================================================== Ubuntu Security Notice USN-6339-4 September 18, 2023 linux-intel-iotg vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 22.04 LTS Summary: Several security issues were fixed in the Linux kernel. Software Description: - linux-intel-iotg: Linux kernel for Intel IoT platforms Details: It was discovered that the NTFS file system implementation in the Linux kernel did not properly validate MFT flags in certain situations. An attacker could use this to construct a malicious NTFS image that, when mounted and operated on, could cause a denial of service (system crash). (CVE-2022-48425) Zi Fan Tan discovered that the binder IPC implementation in the Linux kernel contained 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-2023-21255) It was discovered that a race condition existed in the f2fs file system in the Linux kernel, leading to a null pointer dereference vulnerability. An attacker could use this to construct a malicious f2fs image that, when mounted and operated on, could cause a denial of service (system crash). (CVE-2023-2898) It was discovered that the DVB Core driver in the Linux kernel did not properly handle locking events in certain situations. A local attacker could use this to cause a denial of service (kernel deadlock). (CVE-2023-31084) Yang Lan discovered that the GFS2 file system implementation in the Linux kernel could attempt to dereference a null pointer in some situations. An attacker could use this to construct a malicious GFS2 image that, when mounted and operated on, could cause a denial of service (system crash). (CVE-2023-3212) It was discovered that the KSMBD implementation in theLinux kernel did not properly validate buffer sizes in certain operations, leading to an out-of- bounds read vulnerability. A remote attacker could use this to cause a denial of service (system crash) or possibly expose sensitive information. (CVE-2023-38426, CVE-2023-38428) It was discovered that the KSMBD implementation in the Linux kernel did not properly calculate the size of certain buffers. A remote attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2023-38429) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 22.04 LTS: linux-image-5.15.0-1039-intel-iotg 5.15.0-1039.45 linux-image-intel-iotg 5.15.0.1039.39 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-6339-4 https://ubuntu.com/security/notices/USN-6339-1 CVE-2022-48425, CVE-2023-21255, CVE-2023-2898, CVE-2023-31084, CVE-2023-3212, CVE-2023-38426, CVE-2023-38428, CVE-2023-38429 Package Information: https://launchpad.net/ubuntu/+source/linux-intel-iotg/5.15.0-1039.45 . Solutions for several security weaknesses in Ubuntu's linux-intel-iotg kernel have been released. Ensure to update quickly to prevent complications.. Ubuntu Security Notice, Linux Kernel Issues, IoT Vulnerabilities. . Severity: Important. LinuxSecurity.com Team

Sep 18, 2023 •Important Ubuntu