1. Ubuntu Security Notices
  2. USN-8864-1

USN-8864-1: Linux kernel vulnerabilities

Publication date

2 October 2026

Overview

Several security issues were fixed in the Linux kernel.

Releases

Packages

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:

  • Network file system (NFS) server daemon;
  • 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:

  • Network file system (NFS) server daemon;
  • 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-4.4.0-1129-fips –  4.4.0-1129.136  
linux-image-4.4.0-1160-kvm –  4.4.0-1160.171  
linux-image-4.4.0-1197-aws –  4.4.0-1197.212  
linux-image-4.4.0-288-generic –  4.4.0-288.322  
linux-image-4.4.0-288-lowlatency –  4.4.0-288.322  
linux-image-aws –  4.4.0.1197.201  
linux-image-fips –  4.4.0.1129.131  
linux-image-generic –  4.4.0.288.294  
linux-image-generic-lts-xenial –  4.4.0.288.294  
linux-image-kvm –  4.4.0.1160.157  
linux-image-lowlatency –  4.4.0.288.294  
linux-image-lowlatency-lts-xenial –  4.4.0.288.294  
linux-image-virtual –  4.4.0.288.294  
linux-image-virtual-lts-xenial –  4.4.0.288.294  
14.04 LTS trusty linux-image-4.4.0-1159-aws –  4.4.0-1159.165  
linux-image-4.4.0-288-generic –  4.4.0-288.322~14.04.1  
linux-image-4.4.0-288-lowlatency –  4.4.0-288.322~14.04.1  
linux-image-aws –  4.4.0.1159.156  
linux-image-generic-lts-xenial –  4.4.0.288.322~14.04.1  
linux-image-lowlatency-lts-xenial –  4.4.0.288.322~14.04.1  
linux-image-virtual-lts-xenial –  4.4.0.288.322~14.04.1  

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References

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