1. Ubuntu Security Notices
  2. USN-7428-1

USN-7428-1: Linux kernel vulnerabilities

Publication date

9 April 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-aws-hwe - Linux kernel for Amazon Web Services (AWS-HWE) systems
  • linux-azure - Linux kernel for Microsoft Azure Cloud systems
  • linux-azure-4.15 - Linux kernel for Microsoft Azure Cloud 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

Demi Marie Obenour and Simon Gaiser discovered that several Xen para-
virtualization device frontends did not properly restrict the access rights
of device backends. An attacker could possibly use a malicious Xen backend
to gain access to memory pages of a guest VM or cause a denial of service
in the guest. (CVE-2022-23041)

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:

  • HID subsystem;
  • Network drivers;
  • Mellanox network drivers;
  • SCSI subsystem;
  • SuperH / SH-Mobile drivers;
  • File systems infrastructure;
  • Ext4 file system;
  • JFS file system;
  • IP tunnels definitions;
  • Network namespace;
  • BPF subsystem;
  • Networking core;
  • HSR network protocol;
  • IPv4...

Demi Marie Obenour and Simon Gaiser discovered that several Xen para-
virtualization device frontends did not properly restrict the access rights
of device backends. An attacker could possibly use a malicious Xen backend
to gain access to memory pages of a guest VM or cause a denial of service
in the guest. (CVE-2022-23041)

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:

  • HID subsystem;
  • Network drivers;
  • Mellanox network drivers;
  • SCSI subsystem;
  • SuperH / SH-Mobile drivers;
  • File systems infrastructure;
  • Ext4 file system;
  • JFS file system;
  • IP tunnels definitions;
  • Network namespace;
  • BPF subsystem;
  • Networking core;
  • HSR network protocol;
  • IPv4 networking;
  • IPv6 networking;
  • Network traffic control

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 bionic linux-image-4.15.0-1141-oracle –  4.15.0-1141.152  
linux-image-4.15.0-1162-kvm –  4.15.0-1162.167  
linux-image-4.15.0-1172-gcp –  4.15.0-1172.189  
linux-image-4.15.0-1179-aws –  4.15.0-1179.192  
linux-image-4.15.0-1187-azure –  4.15.0-1187.202  
linux-image-4.15.0-236-generic –  4.15.0-236.248  
linux-image-4.15.0-236-lowlatency –  4.15.0-236.248  
linux-image-aws-lts-18.04 –  4.15.0.1179.177  
linux-image-azure-lts-18.04 –  4.15.0.1187.155  
linux-image-gcp-lts-18.04 –  4.15.0.1172.185  
linux-image-generic –  4.15.0.236.220  
linux-image-kvm –  4.15.0.1162.153  
linux-image-lowlatency –  4.15.0.236.220  
linux-image-oracle-lts-18.04 –  4.15.0.1141.146  
linux-image-virtual –  4.15.0.236.220  
16.04 xenial linux-image-4.15.0-1141-oracle –  4.15.0-1141.152~16.04.1  
linux-image-4.15.0-1172-gcp –  4.15.0-1172.189~16.04.1  
linux-image-4.15.0-1179-aws –  4.15.0-1179.192~16.04.1  
linux-image-4.15.0-1187-azure –  4.15.0-1187.202~16.04.1  
linux-image-4.15.0-236-generic –  4.15.0-236.248~16.04.1  
linux-image-4.15.0-236-lowlatency –  4.15.0-236.248~16.04.1  
linux-image-aws-hwe –  4.15.0.1179.192~16.04.1  
linux-image-azure –  4.15.0.1187.202~16.04.1  
linux-image-gcp –  4.15.0.1172.189~16.04.1  
linux-image-generic-hwe-16.04 –  4.15.0.236.248~16.04.1  
linux-image-gke –  4.15.0.1172.189~16.04.1  
linux-image-lowlatency-hwe-16.04 –  4.15.0.236.248~16.04.1  
linux-image-oem –  4.15.0.236.248~16.04.1  
linux-image-oracle –  4.15.0.1141.152~16.04.1  
linux-image-virtual-hwe-16.04 –  4.15.0.236.248~16.04.1  
14.04 trusty linux-image-4.15.0-1187-azure –  4.15.0-1187.202~14.04.1  
linux-image-azure –  4.15.0.1187.202~14.04.1  

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Get Ubuntu Pro

References

id="usn"

Have additional questions?

Talk to a member of the team ›