1. Ubuntu Security Notices
  2. USN-7930-1

USN-7930-1: Linux kernel vulnerabilities

Publication date

15 December 2025

Overview

Several security issues were fixed in the Linux kernel.

Releases

Packages

  • linux - Linux kernel
  • linux-aws - Linux kernel for Amazon Web Services (AWS) systems
  • linux-kvm - Linux kernel for cloud environments
  • linux-lts-xenial - Linux hardware enablement kernel from Xenial for Trusty

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;
  • MTD block device drivers;
  • Network drivers;
  • DesignWare USB3 driver;
  • Ceph distributed file system;
  • Network file system (NFS) server daemon;
  • NILFS2 file system;
  • File systems infrastructure;
  • Tracing infrastructure;
  • Appletalk network protocol;
  • IPv6 networking;
  • Netfilter

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;
  • MTD block device drivers;
  • Network drivers;
  • DesignWare USB3 driver;
  • Ceph distributed file system;
  • Network file system (NFS) server daemon;
  • NILFS2 file system;
  • File systems infrastructure;
  • Tracing infrastructure;
  • Appletalk network protocol;
  • IPv6 networking;
  • Netfilter

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
16.04 LTS xenial linux-image-4.4.0-1151-kvm –  4.4.0-1151.162  
linux-image-4.4.0-1188-aws –  4.4.0-1188.203  
linux-image-4.4.0-276-generic –  4.4.0-276.310  
linux-image-4.4.0-276-lowlatency –  4.4.0-276.310  
linux-image-aws –  4.4.0.1188.192  
linux-image-generic –  4.4.0.276.282  
linux-image-generic-lts-xenial –  4.4.0.276.282  
linux-image-kvm –  4.4.0.1151.148  
linux-image-lowlatency –  4.4.0.276.282  
linux-image-lowlatency-lts-xenial –  4.4.0.276.282  
linux-image-virtual –  4.4.0.276.282  
linux-image-virtual-lts-xenial –  4.4.0.276.282  
14.04 LTS trusty linux-image-4.4.0-1150-aws –  4.4.0-1150.156  
linux-image-4.4.0-276-generic –  4.4.0-276.310~14.04.1  
linux-image-4.4.0-276-lowlatency –  4.4.0-276.310~14.04.1  
linux-image-aws –  4.4.0.1150.147  
linux-image-generic-lts-xenial –  4.4.0.276.310~14.04.1  
linux-image-lowlatency-lts-xenial –  4.4.0.276.310~14.04.1  
linux-image-virtual-lts-xenial –  4.4.0.276.310~14.04.1  

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References

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