1. Ubuntu Security Notices
  2. USN-7455-2

USN-7455-2: Linux kernel (FIPS) vulnerabilities

Publication date

24 April 2025

Overview

Several security issues were fixed in the Linux kernel.

Releases

Packages

  • linux-aws-fips - Linux kernel for Amazon Web Services (AWS) systems with FIPS
  • linux-fips - Linux kernel with FIPS
  • linux-gcp-fips - Linux kernel for Google Cloud Platform (GCP) systems with FIPS

Details

Jann Horn discovered that the watch_queue event notification subsystem in
the Linux kernel contained an out-of-bounds write vulnerability. A local
attacker could use this to cause a denial of service (system crash) or
escalate their privileges. (CVE-2022-0995)

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 drivers;
  • File systems infrastructure;
  • NTFS3 file system;
  • Ethernet bridge;
  • Ethtool driver;
  • IPv6 networking;
  • Network traffic control;
  • VMware vSockets driver

Jann Horn discovered that the watch_queue event notification subsystem in
the Linux kernel contained an out-of-bounds write vulnerability. A local
attacker could use this to cause a denial of service (system crash) or
escalate their privileges. (CVE-2022-0995)

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 drivers;
  • File systems infrastructure;
  • NTFS3 file system;
  • Ethernet bridge;
  • Ethtool driver;
  • IPv6 networking;
  • Network traffic control;
  • VMware vSockets driver

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
22.04 jammy linux-image-5.15.0-1081-gcp-fips –  5.15.0-1081.90+fips1  
linux-image-5.15.0-1082-aws-fips –  5.15.0-1082.89+fips1  
linux-image-5.15.0-138-fips –  5.15.0-138.148+fips1  
linux-image-aws-fips –  5.15.0.1082.78  
linux-image-fips –  5.15.0.138.78  
linux-image-gcp-fips –  5.15.0.1081.71  

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References

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