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Ubuntu 22.04 LTS Linux Kernel Critical Security Patch USN-8159-2

ubuntu
Calendar Grey April 8, 2026
Dist Ubuntu Esm H88
Several security issues fixed in the Ubuntu Linux kernel impacting AWS and GCP. Immediate update suggested for security.
Several security issues were fixed in the Linux kernel.

Summary

Several security issues were fixed in the Linux kernel.

Software Description:

- 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:

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:

- ARM64 architecture;

- Cryptographic API;

- Netfilter;

- Network traffic control;

(CVE-2025-37849, CVE-2026-23060, CVE-2026-23074, CVE-2026-23111)

Topics%20covered

Topics Covered

security advisory critical Ubuntu fips system compromise Linux kernel

Update Instructions

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 22.04 LTS
   linux-image-5.15.0-1104-aws-fips  5.15.0-1104.111+fips1
                                   Available with Ubuntu Pro
   linux-image-5.15.0-1104-gcp-fips  5.15.0-1104.113+fips1
                                   Available with Ubuntu Pro
   linux-image-5.15.0-174-fips     5.15.0-174.184+fips1
                                   Available with Ubuntu Pro
   linux-image-aws-fips            5.15.0.1104.100
                                   Available with Ubuntu Pro
   linux-image-aws-fips-5.15       5.15.0.1104.100
                                   Available with Ubuntu Pro
   linux-image-fips                5.15.0.174.101
                                   Available with Ubuntu Pro
   linux-image-fips-5.15           5.15.0.174.101
                                   Available with Ubuntu Pro
   linux-image-gcp-fips            5.15.0.1104.94
                                   Available with Ubuntu Pro
   linux-image-gcp-fips-5.15       5.15.0.1104.94
                                   Available with Ubuntu Pro

After a standard system update you need to reboot your computer to make
all the necessary changes.

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.

References

https://ubuntu.com/security/notices/USN-8159-2

https://ubuntu.com/security/notices/USN-8159-1

CVE-2025-37849, CVE-2026-23060, CVE-2026-23074, CVE-2026-23111

Severity
critical
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-8159-2

Topics%20covered

Topics Covered

security advisory critical Ubuntu fips system compromise Linux kernel

Package Information

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