1. Ubuntu Security Notices
  2. USN-7907-3

USN-7907-3: Linux kernel vulnerabilities

Publication date

4 December 2025

Overview

Several security issues were fixed in the Linux kernel.

Releases

Packages

  • linux-gcp - Linux kernel for Google Cloud Platform (GCP) systems
  • linux-gcp-4.15 - Linux kernel for Google Cloud Platform (GCP) systems
  • linux-hwe - Linux hardware enablement (HWE) kernel

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;
  • ACPI drivers;
  • Hardware monitoring drivers;
  • InfiniBand drivers;
  • Mailbox framework;
  • Network drivers;
  • AFS file system;
  • Ceph distributed file system;
  • Network file system (NFS) server daemon;
  • NILFS2 file system;
  • File systems infrastructure;
  • KVM subsystem;
  • L3 Master device support module;
  • Tracing infrastructure;
  • Memory management;
  • Appletalk network protocol;
  • Netfilter;
  • Open vSwitch

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;
  • ACPI drivers;
  • Hardware monitoring drivers;
  • InfiniBand drivers;
  • Mailbox framework;
  • Network drivers;
  • AFS file system;
  • Ceph distributed file system;
  • Network file system (NFS) server daemon;
  • NILFS2 file system;
  • File systems infrastructure;
  • KVM subsystem;
  • L3 Master device support module;
  • Tracing infrastructure;
  • Memory management;
  • Appletalk network protocol;
  • Netfilter;
  • Open vSwitch

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
18.04 LTS bionic linux-image-4.15.0-1180-gcp –  4.15.0-1180.197  
linux-image-gcp-4.15 –  4.15.0.1180.193  
linux-image-gcp-lts-18.04 –  4.15.0.1180.193  
16.04 LTS xenial linux-image-4.15.0-1180-gcp –  4.15.0-1180.197~16.04.1  
linux-image-4.15.0-245-generic –  4.15.0-245.257~16.04.1  
linux-image-4.15.0-245-lowlatency –  4.15.0-245.257~16.04.1  
linux-image-gcp –  4.15.0.1180.197~16.04.1  
linux-image-generic-hwe-16.04 –  4.15.0.245.257~16.04.1  
linux-image-gke –  4.15.0.1180.197~16.04.1  
linux-image-lowlatency-hwe-16.04 –  4.15.0.245.257~16.04.1  
linux-image-oem –  4.15.0.245.257~16.04.1  
linux-image-virtual-hwe-16.04 –  4.15.0.245.257~16.04.1  

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References

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