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Ubuntu 18.04 LTS USN-8145-3 Linux-GCP Critical Kernel Flaws

ubuntu
Calendar Grey April 6, 2026
Dist Ubuntu Esm H88
Critical updates for Ubuntu 18.04 and 16.04 LTS address several kernel security issues fixed in linux-gcp.
Several security issues were fixed in the Linux kernel.

Summary

Several security issues were fixed in the Linux kernel.

Software Description:

- linux-gcp-4.15: Linux kernel for Google Cloud Platform (GCP) systems

- linux-gcp-fips: Linux kernel for Google Cloud Platform (GCP) systems with

FIPS

- linux-gcp: Linux kernel for Google Cloud Platform (GCP) 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:

- ARM64 architecture;

- Cryptographic API;

- UDF file system;

- NFC subsystem;

- Network traffic control;

(CVE-2024-46777, CVE-2025-21735, CVE-2025-37849, CVE-2026-23060,

CVE-2026-23074)

Topics%20covered

Topics Covered

security advisory security issue critical Ubuntu kernel linux-gcp

Update Instructions

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

Ubuntu 18.04 LTS
   linux-image-4.15.0-1183-gcp     4.15.0-1183.200
                                   Available with Ubuntu Pro
   linux-image-4.15.0-2091-gcp-fips  4.15.0-2091.97
                                   Available with Ubuntu Pro
   linux-image-gcp-4.15            4.15.0.1183.196
                                   Available with Ubuntu Pro
   linux-image-gcp-fips            4.15.0.2091.89
                                   Available with Ubuntu Pro
   linux-image-gcp-fips-4.15       4.15.0.2091.89
                                   Available with Ubuntu Pro
   linux-image-gcp-lts-18.04       4.15.0.1183.196
                                   Available with Ubuntu Pro

Ubuntu 16.04 LTS
   linux-image-4.15.0-1183-gcp     4.15.0-1183.200~16.04.2
                                   Available with Ubuntu Pro
   linux-image-gcp                 4.15.0.1183.200~16.04.2
                                   Available with Ubuntu Pro
   linux-image-gke                 4.15.0.1183.200~16.04.2
                                   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-8145-3

https://ubuntu.com/security/notices/USN-8145-2

https://ubuntu.com/security/notices/USN-8145-1

CVE-2024-46777, CVE-2025-21735, CVE-2025-37849, CVE-2026-23060,

CVE-2026-23074

Severity
critical
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-8145-3

Topics%20covered

Topics Covered

security advisory security issue critical Ubuntu kernel linux-gcp

Package Information

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