--- title: 'USN-8574-3: 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-8574-3 --- 1. [Ubuntu Security Notices](https://ubuntu.com/security/notices) 2. USN-8574-3 --- # USN-8574-3: Linux kernel vulnerabilities Publication date 28 July 2026 Overview Several security issues were fixed in the Linux kernel. Releases [24.04 LTS](https://ubuntu.com/security/notices?release=noble) [22.04 LTS](https://ubuntu.com/security/notices?release=jammy) --- Open side navigation ## Packages * [linux-ibm](https://ubuntu.com/security/cves?package=linux-ibm) - Linux kernel for IBM cloud systems * [linux-ibm-6.8](https://ubuntu.com/security/cves?package=linux-ibm-6.8) - Linux kernel for IBM cloud systems * [linux-nvidia-tegra](https://ubuntu.com/security/cves?package=linux-nvidia-tegra) - Linux kernel for NVIDIA Tegra systems * [linux-xilinx](https://ubuntu.com/security/cves?package=linux-xilinx) - Linux kernel for Xilinx systems ## Details It was discovered that some AMD processors did not properly clear data in the floating point divider unit during speculative execution. A local attacker could use this to expose sensitive information. ([CVE-2025-54505](https://ubuntu.com/security/CVE-2025-54505)) It was discovered that some AMD Zen 2 processors did not properly isolate shared resources in the operation cache. A local attacker could possibly use this issue to corrupt instructions executed at a higher privilege level, resulting in privilege escalation. ([CVE-2025-54518](https://ubuntu.com/security/CVE-2025-54518)) It was discovered that some AMD Zen 5 processors supporting RDSEED instruction did not properly handle entropy, potentially resulting in the consumption of insufficiently random values. A local attacker could possibly use this issue to influence the values returned by the RDSEED instruction causing loss of confidentiality and integrity. ( --- 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 | | --- | --- | | 24.04 LTS noble | [linux-image-6.8.0-1030-nvidia-tegra](https://launchpad.net/ubuntu/+source/linux-signed-nvidia-tegra) –  [6.8.0-1030.31](https://launchpad.net/ubuntu/+source/linux-signed-nvidia-tegra/6.8.0-1030.31) | | | | [linux-image-6.8.0-1030-nvidia-tegra-rt](https://launchpad.net/ubuntu/+source/linux-signed-nvidia-tegra) –  [6.8.0-1030.31](https://launchpad.net/ubuntu/+source/linux-signed-nvidia-tegra/6.8.0-1030.31) | | | | [linux-image-6.8.0-1033-xilinx](https://launchpad.net/ubuntu/+source/linux-xilinx) –  [6.8.0-1033.34](https://launchpad.net/ubuntu/+source/linux-xilinx/6.8.0-1033.34) | | | | [linux-image-6.8.0-1061-ibm](https://launchpad.net/ubuntu/+source/linux-signed-ibm) –  [6.8.0-1061.62](https://launchpad.net/ubuntu/+source/linux-signed-ibm/6.8.0-1061.62) | | | | [linux-image-ibm](https://launchpad.net/ubuntu/+source/linux-meta-ibm) –  [6.8.0-1061.62](https://launchpad.net/ubuntu/+source/linux-meta-ibm/6.8.0-1061.62) | | | | [linux-image-ibm-6.8](https://launchpad.net/ubuntu/+source/linux-meta-ibm) –  [6.8.0-1061.62](https://launchpad.net/ubuntu/+source/linux-meta-ibm/6.8.0-1061.62) | | | | [linux-image-ibm-classic](https://launchpad.net/ubuntu/+source/linux-meta-ibm) –  [6.8.0-1061.62](https://launchpad.net/ubuntu/+source/linux-meta-ibm/6.8.0-1061.62) | | | | [linux-image-ibm-lts-24.04](https://launchpad.net/ubuntu/+source/linux-meta-ibm) –  [6.8.0-1061.62](https://launchpad.net/ubuntu/+source/linux-meta-ibm/6.8.0-1061.62) | | | | [linux-image-nvidia-tegra](https://launchpad.net/ubuntu/+source/linux-meta-nvidia-tegra) –  [6.8.0-1030.31](https://launchpad.net/ubuntu/+source/linux-meta-nvidia-tegra/6.8.0-1030.31) | | | | [linux-image-nvidia-tegra-6.8](https://launchpad.net/ubuntu/+source/linux-meta-nvidia-tegra) –  [6.8.0-1030.31](https://launchpad.net/ubuntu/+source/linux-meta-nvidia-tegra/6.8.0-1030.31) | | | | [linux-image-nvidia-tegra-rt](https://launchpad.net/ubuntu/+source/linux-meta-nvidia-tegra) –  [6.8.0-1030.31](https://launchpad.net/ubuntu/+source/linux-meta-nvidia-tegra/6.8.0-1030.31) | | | | [linux-image-nvidia-tegra-rt-6.8](https://launchpad.net/ubuntu/+source/linux-meta-nvidia-tegra) –  [6.8.0-1030.31](https://launchpad.net/ubuntu/+source/linux-meta-nvidia-tegra/6.8.0-1030.31) | | | | [linux-image-xilinx](https://launchpad.net/ubuntu/+source/linux-meta-xilinx) –  [6.8.0.1033.34](https://launchpad.net/ubuntu/+source/linux-meta-xilinx/6.8.0.1033.34) | | | | [linux-image-xilinx-6.8](https://launchpad.net/ubuntu/+source/linux-meta-xilinx) –  [6.8.0.1033.34](https://launchpad.net/ubuntu/+source/linux-meta-xilinx/6.8.0.1033.34) | | | | [linux-image-xilinx-zynqmp](https://launchpad.net/ubuntu/+source/linux-meta-xilinx) –  [6.8.0.1033.34](https://launchpad.net/ubuntu/+source/linux-meta-xilinx/6.8.0.1033.34) | | | | 22.04 LTS jammy | [linux-image-6.8.0-1061-ibm](https://launchpad.net/ubuntu/+source/linux-signed-ibm-6.8) –  [6.8.0-1061.62~22.04.1](https://launchpad.net/ubuntu/+source/linux-signed-ibm-6.8/6.8.0-1061.62~22.04.1) | | | | [linux-image-ibm-6.8](https://launchpad.net/ubuntu/+source/linux-meta-ibm-6.8) –  [6.8.0-1061.62~22.04.1](https://launchpad.net/ubuntu/+source/linux-meta-ibm-6.8/6.8.0-1061.62~22.04.1) | | | --- ### 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 *Search* * [CVE-2026-64164](https://ubuntu.com/security/CVE-2026-64164) * [CVE-2026-63865](https://ubuntu.com/security/CVE-2026-63865) * [CVE-2026-63862](https://ubuntu.com/security/CVE-2026-63862) * [CVE-2026-63861](https://ubuntu.com/security/CVE-2026-63861) * [CVE-2026-63860](https://ubuntu.com/security/CVE-2026-63860) * [CVE-2026-63856](https://ubuntu.com/security/CVE-2026-63856) * [CVE-2026-63855](https://ubuntu.com/security/CVE-2026-63855) * [CVE-2026-63854](https://ubuntu.com/security/CVE-2026-63854) * [CVE-2026-63852](https://ubuntu.com/security/CVE-2026-63852) * [CVE-2026-63851](https://ubuntu.com/security/CVE-2026-63851) --- Show 903 more references ## Related notices id="usn" *Search* * [USN-8850-1](https://ubuntu.com/security/notices/USN-8850-1) * [USN-8802-1](https://ubuntu.com/security/notices/USN-8802-1) * [USN-8748-1](https://ubuntu.com/security/notices/USN-8748-1) * [USN-8728-1](https://ubuntu.com/security/notices/USN-8728-1) * [USN-8728-2](https://ubuntu.com/security/notices/USN-8728-2) * [USN-8728-3](https://ubuntu.com/security/notices/USN-8728-3) * [USN-8725-1](https://ubuntu.com/security/notices/USN-8725-1) * [USN-8725-2](https://ubuntu.com/security/notices/USN-8725-2) * [USN-8715-1](https://ubuntu.com/security/notices/USN-8715-1) * [USN-8715-2](https://ubuntu.com/security/notices/USN-8715-2) --- Show 110 more references --- Have additional questions? 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