--- title: 'USN-7922-5: Linux kernel (IoT) 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-7922-5 --- 1. [Ubuntu Security Notices](https://ubuntu.com/security/notices) 2. USN-7922-5 --- # USN-7922-5: Linux kernel (IoT) vulnerabilities Publication date 12 January 2026 Overview Several security issues were fixed in the Linux kernel. Releases [20.04 LTS](https://ubuntu.com/security/notices?release=focal) --- Open side navigation ## Packages * [linux-iot](https://ubuntu.com/security/cves?package=linux-iot) - Linux kernel for IoT platforms ## Details Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: * Cryptographic API; * ACPI drivers; * InfiniBand drivers; * Media drivers; * Network drivers; * Pin controllers subsystem; * AFS file system; * F2FS file system; * Tracing infrastructure; * Memory management; * Appletalk network protocol; * Netfilter ## 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 | | --- | --- | | 20.04 LTS focal | [linux-image-5.4.0-1057-iot](https://launchpad.net/ubuntu/+source/linux-signed-iot) –  5.4.0-1057.60   Ubuntu Pro | | | --- ### 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-2025-40018](https://ubuntu.com/security/CVE-2025-40018) * [CVE-2025-39993](https://ubuntu.com/security/CVE-2025-39993) * [CVE-2025-39964](https://ubuntu.com/security/CVE-2025-39964) * [CVE-2025-38666](https://ubuntu.com/security/CVE-2025-38666) * [CVE-2025-37958](https://ubuntu.com/security/CVE-2025-37958) * [CVE-2025-21855](https://ubuntu.com/security/CVE-2025-21855) * [CVE-2024-53218](https://ubuntu.com/security/CVE-2024-53218) * [CVE-2024-53090](https://ubuntu.com/security/CVE-2024-53090) * [CVE-2024-50196](https://ubuntu.com/security/CVE-2024-50196) * [CVE-2024-50095](https://ubuntu.com/security/CVE-2024-50095) --- Show 5 more references ## Related notices id="usn" *Search* * [USN-7988-1](https://ubuntu.com/security/notices/USN-7988-1) * [USN-7988-2](https://ubuntu.com/security/notices/USN-7988-2) * [USN-7988-3](https://ubuntu.com/security/notices/USN-7988-3) * [USN-7988-4](https://ubuntu.com/security/notices/USN-7988-4) * [USN-7988-5](https://ubuntu.com/security/notices/USN-7988-5) * [USN-7987-1](https://ubuntu.com/security/notices/USN-7987-1) * [USN-7987-2](https://ubuntu.com/security/notices/USN-7987-2) * [USN-7940-1](https://ubuntu.com/security/notices/USN-7940-1) * [USN-7940-2](https://ubuntu.com/security/notices/USN-7940-2) * [USN-7939-1](https://ubuntu.com/security/notices/USN-7939-1) --- Show 112 more references --- Have additional questions? [Talk to a member of the team ›](https://wiki.ubuntu.com/SecurityTeam/FAQ?_ga=2.242131138.1744859116.1742138161-1500419473.1726851136&_gl=1*161muja*_gcl_au*MzUyMTIzNjI1LjE3MzYyNDQ4NTE.#Contact)