1. Ubuntu Security Notices
  2. USN-8112-1

USN-8112-1: Linux kernel vulnerabilities

Publication date

20 March 2026

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-aws-hwe - Linux kernel for Amazon Web Services (AWS-HWE) systems
  • 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
  • linux-kvm - Linux kernel for cloud environments
  • linux-oracle - Linux kernel for Oracle Cloud systems

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:

  • x86 architecture;
  • MMC subsystem;
  • Network drivers;
  • USB Device Class drivers;
  • BTRFS file system;
  • HFS+ file system;
  • XFRM subsystem;
  • IPv4 networking;
  • IPv6 networking;
  • MAC80211 subsystem;
  • Simplified Mandatory Access Control Kernel 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:

  • x86 architecture;
  • MMC subsystem;
  • Network drivers;
  • USB Device Class drivers;
  • BTRFS file system;
  • HFS+ file system;
  • XFRM subsystem;
  • IPv4 networking;
  • IPv6 networking;
  • MAC80211 subsystem;
  • Simplified Mandatory Access Control Kernel 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
18.04 LTS bionic linux-image-4.15.0-1151-oracle –  4.15.0-1151.162  
linux-image-4.15.0-1171-kvm –  4.15.0-1171.176  
linux-image-4.15.0-1182-gcp –  4.15.0-1182.199  
linux-image-4.15.0-1189-aws –  4.15.0-1189.202  
linux-image-4.15.0-247-generic –  4.15.0-247.259  
linux-image-4.15.0-247-lowlatency –  4.15.0-247.259  
linux-image-aws-4.15 –  4.15.0.1189.187  
linux-image-aws-lts-18.04 –  4.15.0.1189.187  
linux-image-gcp-4.15 –  4.15.0.1182.195  
linux-image-gcp-lts-18.04 –  4.15.0.1182.195  
linux-image-generic –  4.15.0.247.231  
linux-image-kvm –  4.15.0.1171.162  
linux-image-lowlatency –  4.15.0.247.231  
linux-image-oracle-4.15 –  4.15.0.1151.156  
linux-image-oracle-lts-18.04 –  4.15.0.1151.156  
linux-image-virtual –  4.15.0.247.231  
16.04 LTS xenial linux-image-4.15.0-1151-oracle –  4.15.0-1151.162~16.04.1  
linux-image-4.15.0-1182-gcp –  4.15.0-1182.199~16.04.1  
linux-image-4.15.0-1189-aws –  4.15.0-1189.202~16.04.1  
linux-image-4.15.0-247-generic –  4.15.0-247.259~16.04.1  
linux-image-4.15.0-247-lowlatency –  4.15.0-247.259~16.04.1  
linux-image-aws-hwe –  4.15.0.1189.202~16.04.1  
linux-image-gcp –  4.15.0.1182.199~16.04.1  
linux-image-generic-hwe-16.04 –  4.15.0.247.259~16.04.1  
linux-image-gke –  4.15.0.1182.199~16.04.1  
linux-image-lowlatency-hwe-16.04 –  4.15.0.247.259~16.04.1  
linux-image-oem –  4.15.0.247.259~16.04.1  
linux-image-oracle –  4.15.0.1151.162~16.04.1  
linux-image-virtual-hwe-16.04 –  4.15.0.247.259~16.04.1  

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References

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