--- title: 'USN-6516-1: Linux kernel (Intel IoTG) vulnerabilities | Ubuntu security notices' description: Ubuntu is an open source software operating system that runs from the desktop, to the cloud, to all your internet connected things. url: https://ubuntu.com/security/notices/USN-6516-1 --- 1. [Ubuntu Security Notices](https://ubuntu.com/security/notices) 2. USN-6516-1 --- # USN-6516-1: Linux kernel (Intel IoTG) vulnerabilities Publication date 27 November 2023 Overview Several security issues were fixed in the Linux kernel. Releases [22.04 LTS](https://ubuntu.com/security/notices?release=jammy) [20.04 LTS](https://ubuntu.com/security/notices?release=focal) --- Open side navigation ## Packages * [linux-intel-iotg](https://ubuntu.com/security/cves?package=linux-intel-iotg) - Linux kernel for Intel IoT platforms * [linux-intel-iotg-5.15](https://ubuntu.com/security/cves?package=linux-intel-iotg-5.15) - Linux kernel for Intel IoT platforms ## Details Ivan D Barrera, Christopher Bednarz, Mustafa Ismail, and Shiraz Saleem discovered that the InfiniBand RDMA driver in the Linux kernel did not properly check for zero-length STAG or MR registration. A remote attacker could possibly use this to execute arbitrary code. ([CVE-2023-25775](https://ubuntu.com/security/CVE-2023-25775)) Yu Hao and Weiteng Chen discovered that the Bluetooth HCI UART driver in the Linux kernel contained a race condition, leading to a null pointer dereference vulnerability. A local attacker could use this to cause a denial of service (system crash). ([CVE-2023-31083](https://ubuntu.com/security/CVE-2023-31083)) Yu Hao discovered that the UBI driver in the Linux kernel did not properly check for MTD with zero erasesize during device attachment. A local privileged attacker could use this to cause a denial of service (system crash). ([CVE-2023-31085](https://ubuntu.com/security/CVE-2023-31085)) Lin Ma discovered that the... --- Show more ## Update instructions After a standard system update you need to reboot your computer to make all the necessary changes. [Learn more about how to get the fixes.](https://ubuntu.com/security/cves/about#security) 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. The problem can be corrected by updating your system to the following package versions: | Ubuntu Release | Package Version | | --- | --- | | 22.04 LTS jammy | [linux-image-5.15.0-1045-intel-iotg](https://launchpad.net/ubuntu/+source/linux-signed-intel-iotg) –  [5.15.0-1045.51](https://launchpad.net/ubuntu/+source/linux-signed-intel-iotg/5.15.0-1045.51) | | | | [linux-image-intel-iotg](https://launchpad.net/ubuntu/+source/linux-meta-intel-iotg) –  [5.15.0.1045.45](https://launchpad.net/ubuntu/+source/linux-meta-intel-iotg/5.15.0.1045.45) | | | | 20.04 LTS focal | [linux-image-5.15.0-1045-intel-iotg](https://launchpad.net/ubuntu/+source/linux-signed-intel-iotg-5.15) –  [5.15.0-1045.51~20.04.1](https://launchpad.net/ubuntu/+source/linux-signed-intel-iotg-5.15/5.15.0-1045.51~20.04.1) | | | | [linux-image-intel](https://launchpad.net/ubuntu/+source/linux-meta-intel-iotg-5.15) –  [5.15.0.1045.51~20.04.35](https://launchpad.net/ubuntu/+source/linux-meta-intel-iotg-5.15/5.15.0.1045.51~20.04.35) | | | | [linux-image-intel-iotg](https://launchpad.net/ubuntu/+source/linux-meta-intel-iotg-5.15) –  [5.15.0.1045.51~20.04.35](https://launchpad.net/ubuntu/+source/linux-meta-intel-iotg-5.15/5.15.0.1045.51~20.04.35) | | | --- ### Reduce your security exposure Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines. [Get Ubuntu Pro](https://ubuntu.com/pro) ## References * [CVE-2023-45871](https://ubuntu.com/security/CVE-2023-45871) * [CVE-2023-3772](https://ubuntu.com/security/CVE-2023-3772) * [CVE-2023-31085](https://ubuntu.com/security/CVE-2023-31085) * [CVE-2023-31083](https://ubuntu.com/security/CVE-2023-31083) * [CVE-2023-25775](https://ubuntu.com/security/CVE-2023-25775) ## Related notices * [USN-6572-1](https://ubuntu.com/security/notices/USN-6572-1) * [USN-6537-1](https://ubuntu.com/security/notices/USN-6537-1) * [USN-6532-1](https://ubuntu.com/security/notices/USN-6532-1) * [USN-6520-1](https://ubuntu.com/security/notices/USN-6520-1) * [USN-6503-1](https://ubuntu.com/security/notices/USN-6503-1) * [USN-6502-1](https://ubuntu.com/security/notices/USN-6502-1) * [USN-6502-2](https://ubuntu.com/security/notices/USN-6502-2) * [USN-6502-3](https://ubuntu.com/security/notices/USN-6502-3) * [USN-6502-4](https://ubuntu.com/security/notices/USN-6502-4) * [USN-6496-1](https://ubuntu.com/security/notices/USN-6496-1) --- Show 19 more references --- Have additional questions? 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