--- title: 'USN-7704-5: 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-7704-5 --- 1. [Ubuntu Security Notices](https://ubuntu.com/security/notices) 2. USN-7704-5 --- # USN-7704-5: Linux kernel vulnerabilities Publication date 28 August 2025 Overview Several security issues were fixed in the Linux kernel. Releases [22.04 LTS](https://ubuntu.com/security/notices?release=jammy) --- Open side navigation ## Packages * [linux-gke](https://ubuntu.com/security/cves?package=linux-gke) - Linux kernel for Google Container Engine (GKE) systems * [linux-kvm](https://ubuntu.com/security/cves?package=linux-kvm) - Linux kernel for cloud environments ## 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; * Arm Firmware Framework for ARMv8-A(FFA); * Multiple devices driver; * Media drivers; * Network drivers; * NVDIMM (Non-Volatile Memory Device) drivers; * NVME drivers; * x86 platform drivers; * TCM subsystem; * Virtio drivers; * File systems infrastructure; * SMB network file system; * LZO compression library; * Digital Audio (PCM) driver; * Tracing infrastructure; * Padata parallel execution mechanism; * CAN network layer; * Networking core; * TIPC protocol; * ALSA framework ## 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-5.15.0-1086-kvm](https://launchpad.net/ubuntu/+source/linux-signed-kvm) –  [5.15.0-1086.91](https://launchpad.net/ubuntu/+source/linux-signed-kvm/5.15.0-1086.91) | | | | [linux-image-5.15.0-1087-gke](https://launchpad.net/ubuntu/+source/linux-signed-gke) –  [5.15.0-1087.93](https://launchpad.net/ubuntu/+source/linux-signed-gke/5.15.0-1087.93) | | | | [linux-image-gke](https://launchpad.net/ubuntu/+source/linux-meta-gke) –  [5.15.0.1087.86](https://launchpad.net/ubuntu/+source/linux-meta-gke/5.15.0.1087.86) | | | | [linux-image-gke-5.15](https://launchpad.net/ubuntu/+source/linux-meta-gke) –  [5.15.0.1087.86](https://launchpad.net/ubuntu/+source/linux-meta-gke/5.15.0.1087.86) | | | | [linux-image-kvm](https://launchpad.net/ubuntu/+source/linux-meta-kvm) –  [5.15.0.1086.82](https://launchpad.net/ubuntu/+source/linux-meta-kvm/5.15.0.1086.82) | | | | [linux-image-kvm-5.15](https://launchpad.net/ubuntu/+source/linux-meta-kvm) –  [5.15.0.1086.82](https://launchpad.net/ubuntu/+source/linux-meta-kvm/5.15.0.1086.82) | | | --- ### 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-2025-38079](https://ubuntu.com/security/CVE-2025-38079) * [CVE-2025-38078](https://ubuntu.com/security/CVE-2025-38078) * [CVE-2025-38077](https://ubuntu.com/security/CVE-2025-38077) * [CVE-2025-38075](https://ubuntu.com/security/CVE-2025-38075) * [CVE-2025-38072](https://ubuntu.com/security/CVE-2025-38072) * [CVE-2025-38068](https://ubuntu.com/security/CVE-2025-38068) * [CVE-2025-38066](https://ubuntu.com/security/CVE-2025-38066) * [CVE-2025-38065](https://ubuntu.com/security/CVE-2025-38065) * [CVE-2025-38061](https://ubuntu.com/security/CVE-2025-38061) * [CVE-2025-38058](https://ubuntu.com/security/CVE-2025-38058) --- Show 11 more references ## Related notices id="usn" *Search* * [USN-8126-1](https://ubuntu.com/security/notices/USN-8126-1) * [USN-8074-1](https://ubuntu.com/security/notices/USN-8074-1) * [USN-8074-2](https://ubuntu.com/security/notices/USN-8074-2) * [USN-8052-1](https://ubuntu.com/security/notices/USN-8052-1) * [USN-8052-2](https://ubuntu.com/security/notices/USN-8052-2) * [USN-8031-1](https://ubuntu.com/security/notices/USN-8031-1) * [USN-8031-2](https://ubuntu.com/security/notices/USN-8031-2) * [USN-8031-3](https://ubuntu.com/security/notices/USN-8031-3) * [USN-8028-1](https://ubuntu.com/security/notices/USN-8028-1) * [USN-8028-2](https://ubuntu.com/security/notices/USN-8028-2) --- Show 21 more references --- Have additional questions? 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