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[USN-7701-2] Linux kernel (FIPS) vulnerabilities

Posted on 20 August 2025
Ubuntu Security

==========================================================================Ubuntu Security Notice USN-7701-2
August 20, 2025

linux-aws-fips, linux-fips, linux-gcp-fips vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 20.04 LTS

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:
- Device tree and open firmware driver;
- SCSI subsystem;
- TTY drivers;
- SMB network file system;
- Bluetooth subsystem;
- Network traffic control;
(CVE-2023-52757, CVE-2024-49950, CVE-2024-38541, CVE-2023-52975,
CVE-2024-50073, CVE-2025-38083, CVE-2025-37797)

Update instructions:

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

Ubuntu 20.04 LTS
linux-image-5.4.0-1123-fips 5.4.0-1123.133
Available with Ubuntu Pro
linux-image-5.4.0-1149-aws-fips 5.4.0-1149.159+fips1
Available with Ubuntu Pro
linux-image-5.4.0-1152-gcp-fips 5.4.0-1152.161+fips1
Available with Ubuntu Pro
linux-image-aws-fips 5.4.0.1149.96
Available with Ubuntu Pro
linux-image-aws-fips-5.4 5.4.0.1149.96
Available with Ubuntu Pro
linux-image-fips 5.4.0.1123.120
Available with Ubuntu Pro
linux-image-fips-5.4 5.4.0.1123.120
Available with Ubuntu Pro
linux-image-gcp-fips 5.4.0.1152.94
Available with Ubuntu Pro
linux-image-gcp-fips-5.4 5.4.0.1152.94
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-7701-2
https://ubuntu.com/security/notices/USN-7701-1
CVE-2023-52757, CVE-2023-52975, CVE-2024-38541, CVE-2024-49950,
CVE-2024-50073, CVE-2025-37797, CVE-2025-38083

Package Information:
https://launchpad.net/ubuntu/+source/linux-aws-fips/5.4.0-1149.159+fips1
https://launchpad.net/ubuntu/+source/linux-fips/5.4.0-1123.133
https://launchpad.net/ubuntu/+source/linux-gcp-fips/5.4.0-1152.161+fips1


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