1. Ubuntu Security Notices
  2. USN-7704-2

USN-7704-2: Linux kernel (FIPS) vulnerabilities

Publication date

19 August 2025

Overview

Several security issues were fixed in the Linux kernel.

Releases

Packages

  • linux-aws-fips - Linux kernel for Amazon Web Services (AWS) systems with FIPS
  • linux-fips - Linux kernel with FIPS
  • linux-gcp-fips - Linux kernel for Google Cloud Platform (GCP) systems with FIPS

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

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.

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 jammy linux-image-5.15.0-1090-aws-fips –  5.15.0-1090.97+fips1  
linux-image-5.15.0-1090-gcp-fips –  5.15.0-1090.99+fips1  
linux-image-5.15.0-152-fips –  5.15.0-152.162+fips1  
linux-image-aws-fips –  5.15.0.1090.86  
linux-image-aws-fips-5.15 –  5.15.0.1090.86  
linux-image-fips –  5.15.0.152.87  
linux-image-fips-5.15 –  5.15.0.152.87  
linux-image-gcp-fips –  5.15.0.1090.80  
linux-image-gcp-fips-5.15 –  5.15.0.1090.80  

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References

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