--- title: 'USN-7795-1: Linux kernel 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-7795-1 --- 1. [Ubuntu Security Notices](https://ubuntu.com/security/notices) 2. USN-7795-1 --- # USN-7795-1: Linux kernel vulnerabilities Publication date 2 October 2025 Overview Several security issues were fixed in the Linux kernel. Releases [20.04 LTS](https://ubuntu.com/security/notices?release=focal) [18.04 LTS](https://ubuntu.com/security/notices?release=bionic) --- Open side navigation ## Packages * [linux](https://ubuntu.com/security/cves?package=linux) - Linux kernel * [linux-aws](https://ubuntu.com/security/cves?package=linux-aws) - Linux kernel for Amazon Web Services (AWS) systems * [linux-aws-5.4](https://ubuntu.com/security/cves?package=linux-aws-5.4) - Linux kernel for Amazon Web Services (AWS) systems * [linux-bluefield](https://ubuntu.com/security/cves?package=linux-bluefield) - Linux kernel for NVIDIA BlueField platforms * [linux-gcp](https://ubuntu.com/security/cves?package=linux-gcp) - Linux kernel for Google Cloud Platform (GCP) systems * [linux-gcp-5.4](https://ubuntu.com/security/cves?package=linux-gcp-5.4) - Linux kernel for Google Cloud Platform (GCP) systems * [linux-hwe-5.4](https://ubuntu.com/security/cves?package=linux-hwe-5.4) - Linux hardware enablement (HWE) kernel * [linux-ibm](https://ubuntu.com/security/cves?package=linux-ibm) - Linux kernel for IBM cloud systems * [linux-ibm-5.4](https://ubuntu.com/security/cves?package=linux-ibm-5.4) - Linux kernel for IBM cloud systems * [linux-iot](https://ubuntu.com/security/cves?package=linux-iot) - Linux kernel for IoT platforms * [linux-kvm](https://ubuntu.com/security/cves?package=linux-kvm) - Linux kernel for cloud environments * [linux-raspi](https://ubuntu.com/security/cves?package=linux-raspi) - Linux kernel for Raspberry Pi systems * [linux-xilinx-zynqmp](https://ubuntu.com/security/cves?package=linux-xilinx-zynqmp) - Linux kernel for Xilinx ZynqMP processors ## 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 | | --- | --- | | 20.04 LTS focal | [linux-image-5.4.0-1055-iot](https://launchpad.net/ubuntu/+source/linux-signed-iot) –  5.4.0-1055.58   Ubuntu Pro | | | | [linux-image-5.4.0-1069-xilinx-zynqmp](https://launchpad.net/ubuntu/+source/linux-xilinx-zynqmp) –  5.4.0-1069.73   Ubuntu Pro | | | | [linux-image-5.4.0-1097-ibm](https://launchpad.net/ubuntu/+source/linux-signed-ibm) –  5.4.0-1097.102   Ubuntu Pro | | | | [linux-image-5.4.0-1110-bluefield](https://launchpad.net/ubuntu/+source/linux-signed-bluefield) –  5.4.0-1110.117   Ubuntu Pro | | | | [linux-image-5.4.0-1134-raspi](https://launchpad.net/ubuntu/+source/linux-raspi) –  5.4.0-1134.147   Ubuntu Pro | | | | [linux-image-5.4.0-1138-kvm](https://launchpad.net/ubuntu/+source/linux-signed-kvm) –  5.4.0-1138.147   Ubuntu Pro | | | | [linux-image-5.4.0-1151-aws](https://launchpad.net/ubuntu/+source/linux-signed-aws) –  5.4.0-1151.161   Ubuntu Pro | | | | [linux-image-5.4.0-1154-gcp](https://launchpad.net/ubuntu/+source/linux-signed-gcp) –  5.4.0-1154.163   Ubuntu Pro | | | | [linux-image-5.4.0-222-generic](https://launchpad.net/ubuntu/+source/linux-signed) –  5.4.0-222.242   Ubuntu Pro | | | | [linux-image-5.4.0-222-generic-lpae](https://launchpad.net/ubuntu/+source/linux) –  5.4.0-222.242   Ubuntu Pro | | | | [linux-image-5.4.0-222-lowlatency](https://launchpad.net/ubuntu/+source/linux-signed) –  5.4.0-222.242   Ubuntu Pro | | | | [linux-image-aws-5.4](https://launchpad.net/ubuntu/+source/linux-meta-aws) –  5.4.0.1151.148   Ubuntu Pro | | | | [linux-image-aws-lts-20.04](https://launchpad.net/ubuntu/+source/linux-meta-aws) –  5.4.0.1151.148   Ubuntu Pro | | | | [linux-image-bluefield](https://launchpad.net/ubuntu/+source/linux-meta-bluefield) –  5.4.0.1110.106   Ubuntu Pro | | | | [linux-image-bluefield-5.4](https://launchpad.net/ubuntu/+source/linux-meta-bluefield) –  5.4.0.1110.106   Ubuntu Pro | | | | [linux-image-gcp-5.4](https://launchpad.net/ubuntu/+source/linux-meta-gcp) –  5.4.0.1154.156   Ubuntu Pro | | | | [linux-image-gcp-lts-20.04](https://launchpad.net/ubuntu/+source/linux-meta-gcp) –  5.4.0.1154.156   Ubuntu Pro | | | | [linux-image-generic](https://launchpad.net/ubuntu/+source/linux-meta) –  5.4.0.222.214   Ubuntu Pro | | | | [linux-image-generic-5.4](https://launchpad.net/ubuntu/+source/linux-meta) –  5.4.0.222.214   Ubuntu Pro | | | | [linux-image-generic-lpae](https://launchpad.net/ubuntu/+source/linux-meta) –  5.4.0.222.214   Ubuntu Pro | | | | [linux-image-generic-lpae-5.4](https://launchpad.net/ubuntu/+source/linux-meta) –  5.4.0.222.214   Ubuntu Pro | | | | [linux-image-ibm-5.4](https://launchpad.net/ubuntu/+source/linux-meta-ibm) –  5.4.0.1097.126   Ubuntu Pro | | | | [linux-image-ibm-lts-20.04](https://launchpad.net/ubuntu/+source/linux-meta-ibm) –  5.4.0.1097.126   Ubuntu Pro | | | | [linux-image-kvm](https://launchpad.net/ubuntu/+source/linux-meta-kvm) –  5.4.0.1138.134   Ubuntu Pro | | | | [linux-image-kvm-5.4](https://launchpad.net/ubuntu/+source/linux-meta-kvm) –  5.4.0.1138.134   Ubuntu Pro | | | | [linux-image-lowlatency](https://launchpad.net/ubuntu/+source/linux-meta) –  5.4.0.222.214   Ubuntu Pro | | | | [linux-image-lowlatency-5.4](https://launchpad.net/ubuntu/+source/linux-meta) –  5.4.0.222.214   Ubuntu Pro | | | | [linux-image-oem](https://launchpad.net/ubuntu/+source/linux-meta) –  5.4.0.222.214   Ubuntu Pro | | | | [linux-image-oem-osp1](https://launchpad.net/ubuntu/+source/linux-meta) –  5.4.0.222.214   Ubuntu Pro | | | | [linux-image-raspi](https://launchpad.net/ubuntu/+source/linux-meta-raspi) –  5.4.0.1134.165   Ubuntu Pro | | | | [linux-image-raspi-5.4](https://launchpad.net/ubuntu/+source/linux-meta-raspi) –  5.4.0.1134.165   Ubuntu Pro | | | | [linux-image-raspi2](https://launchpad.net/ubuntu/+source/linux-meta-raspi) –  5.4.0.1134.165   Ubuntu Pro | | | | [linux-image-virtual](https://launchpad.net/ubuntu/+source/linux-meta) –  5.4.0.222.214   Ubuntu Pro | | | | [linux-image-virtual-5.4](https://launchpad.net/ubuntu/+source/linux-meta) –  5.4.0.222.214   Ubuntu Pro | | | | [linux-image-xilinx-zynqmp](https://launchpad.net/ubuntu/+source/linux-meta-xilinx-zynqmp) –  5.4.0.1069.69   Ubuntu Pro | | | | [linux-image-xilinx-zynqmp-5.4](https://launchpad.net/ubuntu/+source/linux-meta-xilinx-zynqmp) –  5.4.0.1069.69   Ubuntu Pro | | | | 18.04 LTS bionic | [linux-image-5.4.0-1097-ibm](https://launchpad.net/ubuntu/+source/linux-signed-ibm-5.4) –  5.4.0-1097.102~18.04.1   Ubuntu Pro | | | | [linux-image-5.4.0-1151-aws](https://launchpad.net/ubuntu/+source/linux-signed-aws-5.4) –  5.4.0-1151.161~18.04.1   Ubuntu Pro | | | | [linux-image-5.4.0-1154-gcp](https://launchpad.net/ubuntu/+source/linux-signed-gcp-5.4) –  5.4.0-1154.163~18.04.1   Ubuntu Pro | | | | [linux-image-5.4.0-222-generic](https://launchpad.net/ubuntu/+source/linux-signed-hwe-5.4) –  5.4.0-222.242~18.04.1   Ubuntu Pro | | | | [linux-image-5.4.0-222-lowlatency](https://launchpad.net/ubuntu/+source/linux-signed-hwe-5.4) –  5.4.0-222.242~18.04.1   Ubuntu Pro | | | | [linux-image-aws](https://launchpad.net/ubuntu/+source/linux-meta-aws-5.4) –  5.4.0.1151.161~18.04.1   Ubuntu Pro | | | | [linux-image-aws-5.4](https://launchpad.net/ubuntu/+source/linux-meta-aws-5.4) –  5.4.0.1151.161~18.04.1   Ubuntu Pro | | | | [linux-image-gcp](https://launchpad.net/ubuntu/+source/linux-meta-gcp-5.4) –  5.4.0.1154.163~18.04.1   Ubuntu Pro | | | | [linux-image-gcp-5.4](https://launchpad.net/ubuntu/+source/linux-meta-gcp-5.4) –  5.4.0.1154.163~18.04.1   Ubuntu Pro | | | | [linux-image-generic-5.4](https://launchpad.net/ubuntu/+source/linux-meta-hwe-5.4) –  5.4.0.222.242~18.04.1   Ubuntu Pro | | | | [linux-image-generic-hwe-18.04](https://launchpad.net/ubuntu/+source/linux-meta-hwe-5.4) –  5.4.0.222.242~18.04.1   Ubuntu Pro | | | | [linux-image-ibm](https://launchpad.net/ubuntu/+source/linux-meta-ibm-5.4) –  5.4.0.1097.102~18.04.1   Ubuntu Pro | | | | [linux-image-ibm-5.4](https://launchpad.net/ubuntu/+source/linux-meta-ibm-5.4) –  5.4.0.1097.102~18.04.1   Ubuntu Pro | | | | [linux-image-lowlatency-5.4](https://launchpad.net/ubuntu/+source/linux-meta-hwe-5.4) –  5.4.0.222.242~18.04.1   Ubuntu Pro | | | | [linux-image-lowlatency-hwe-18.04](https://launchpad.net/ubuntu/+source/linux-meta-hwe-5.4) –  5.4.0.222.242~18.04.1   Ubuntu Pro | | | | [linux-image-oem](https://launchpad.net/ubuntu/+source/linux-meta-hwe-5.4) –  5.4.0.222.242~18.04.1   Ubuntu Pro | | | | [linux-image-oem-osp1](https://launchpad.net/ubuntu/+source/linux-meta-hwe-5.4) –  5.4.0.222.242~18.04.1   Ubuntu Pro | | | | [linux-image-snapdragon-5.4](https://launchpad.net/ubuntu/+source/linux-meta-hwe-5.4) –  5.4.0.222.242~18.04.1   Ubuntu Pro | | | | [linux-image-snapdragon-hwe-18.04](https://launchpad.net/ubuntu/+source/linux-meta-hwe-5.4) –  5.4.0.222.242~18.04.1   Ubuntu Pro | | | | [linux-image-virtual-5.4](https://launchpad.net/ubuntu/+source/linux-meta-hwe-5.4) –  5.4.0.222.242~18.04.1   Ubuntu Pro | | | | [linux-image-virtual-hwe-18.04](https://launchpad.net/ubuntu/+source/linux-meta-hwe-5.4) –  5.4.0.222.242~18.04.1   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? 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