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Ubuntu 18.04 LTS USN-7628-1 critical: Urgent Linux kernel vulnerabilities

ubuntu
Calendar Grey July 8, 2025
Dist Ubuntu Esm H88
A range of security flaws were addressed in the Ubuntu Linux kernel FIPS to enhance system stability and protect against potential threats.
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-azure-fips: Linux kernel for Microsoft Azure Cloud 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:

- PowerPC architecture;

- Block layer subsystem;

- ACPI drivers;

- NILFS2 file system;

- File systems infrastructure;

- Memory management;

- Network traffic control;

- USB sound devices;

(CVE-2025-37932, CVE-2024-53197, CVE-2024-50116, CVE-2021-47379,

CVE-2024-49958, CVE-2022-49179, CVE-2024-46787, CVE-2024-41070,

CVE-2025-38000, CVE-2024-56662, CVE-2022-49176, CVE-2025-37798)

Topics%20covered

Topics Covered

security advisory security issue critical Ubuntu system compromise Linux kernel

Update Instructions

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

Ubuntu 18.04 LTS
   linux-image-4.15.0-1137-fips    4.15.0-1137.148
                                   Available with Ubuntu Pro
   linux-image-4.15.0-2083-gcp-fips  4.15.0-2083.89
                                   Available with Ubuntu Pro
   linux-image-4.15.0-2099-azure-fips  4.15.0-2099.105
                                   Available with Ubuntu Pro
   linux-image-4.15.0-2120-aws-fips  4.15.0-2120.126
                                   Available with Ubuntu Pro
   linux-image-aws-fips            4.15.0.2120.114
                                   Available with Ubuntu Pro
   linux-image-aws-fips-4.15       4.15.0.2120.114
                                   Available with Ubuntu Pro
   linux-image-azure-fips          4.15.0.2099.95
                                   Available with Ubuntu Pro
   linux-image-fips                4.15.0.1137.134
                                   Available with Ubuntu Pro
   linux-image-gcp-fips            4.15.0.2083.81
                                   Available with Ubuntu Pro
   linux-image-gcp-fips-4.15       4.15.0.2083.81
                                   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-7627-2

https://ubuntu.com/security/notices/USN-7627-1

CVE-2021-47379, CVE-2022-49176, CVE-2022-49179, CVE-2024-41070,

CVE-2024-46787, CVE-2024-49958, CVE-2024-50116, CVE-2024-53197,

CVE-2024-56662, CVE-2025-37798, CVE-2025-37932, CVE-2025-38000

Severity
critical
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-7627-2

Topics%20covered

Topics Covered

security advisory security issue critical Ubuntu system compromise Linux kernel

Package Information

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