--- title: 'USN-7795-4: Linux kernel (Oracle) 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-7795-4 --- 1. [Ubuntu Security Notices](https://ubuntu.com/security/notices) 2. USN-7795-4 --- # USN-7795-4: Linux kernel (Oracle) vulnerabilities Publication date 24 October 2025 Overview Several security issues were fixed in the Linux kernel. Releases [18.04 LTS](https://ubuntu.com/security/notices?release=bionic) --- Open side navigation ## Packages * [linux-oracle-5.4](https://ubuntu.com/security/cves?package=linux-oracle-5.4) - Linux kernel for Oracle Cloud systems ## 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: * Ext4 file system; * Network file system (NFS) server daemon; * Packet sockets; * Network traffic control; * VMware vSockets driver ## 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 | | --- | --- | | 18.04 LTS bionic | [linux-image-5.4.0-1149-oracle](https://launchpad.net/ubuntu/+source/linux-signed-oracle-5.4) –  5.4.0-1149.159~18.04.1   Ubuntu Pro | | | | [linux-image-oracle](https://launchpad.net/ubuntu/+source/linux-meta-oracle-5.4) –  5.4.0.1149.159~18.04.1   Ubuntu Pro | | | | [linux-image-oracle-5.4](https://launchpad.net/ubuntu/+source/linux-meta-oracle-5.4) –  5.4.0.1149.159~18.04.1   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-2025-38618](https://ubuntu.com/security/CVE-2025-38618) * [CVE-2025-38617](https://ubuntu.com/security/CVE-2025-38617) * [CVE-2025-38477](https://ubuntu.com/security/CVE-2025-38477) * [CVE-2025-37785](https://ubuntu.com/security/CVE-2025-37785) * [CVE-2025-21796](https://ubuntu.com/security/CVE-2025-21796) ## Related notices id="usn" *Search* * [USN-7933-1](https://ubuntu.com/security/notices/USN-7933-1) * [USN-7875-1](https://ubuntu.com/security/notices/USN-7875-1) * [USN-7865-1](https://ubuntu.com/security/notices/USN-7865-1) * [USN-7854-1](https://ubuntu.com/security/notices/USN-7854-1) * [USN-7821-1](https://ubuntu.com/security/notices/USN-7821-1) * [USN-7820-1](https://ubuntu.com/security/notices/USN-7820-1) * [USN-7819-1](https://ubuntu.com/security/notices/USN-7819-1) * [USN-7819-2](https://ubuntu.com/security/notices/USN-7819-2) * [USN-7811-1](https://ubuntu.com/security/notices/USN-7811-1) * [USN-7810-1](https://ubuntu.com/security/notices/USN-7810-1) --- Show 76 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)