[USN-7922-2] Linux kernel (FIPS) vulnerabilities

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==========================================================================
Ubuntu Security Notice USN-7922-2
December 11, 2025

linux-fips, linux-aws-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:
- Cryptographic API;
- ACPI drivers;
- InfiniBand drivers;
- Media drivers;
- Network drivers;
- Pin controllers subsystem;
- AFS file system;
- F2FS file system;
- Tracing infrastructure;
- Memory management;
- Appletalk network protocol;
- Netfilter;
(CVE-2022-49026, CVE-2022-49390, CVE-2024-47691, CVE-2024-49935,
CVE-2024-50067, CVE-2024-50095, CVE-2024-50196, CVE-2024-53090,
CVE-2024-53218, CVE-2025-21855, CVE-2025-37958, CVE-2025-38666,
CVE-2025-39964, CVE-2025-39993, CVE-2025-40018)

Update instructions:

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

Ubuntu 20.04 LTS
linux-image-5.4.0-1127-fips 5.4.0-1127.137
Available with Ubuntu Pro
linux-image-5.4.0-1153-aws-fips 5.4.0-1153.163+fips1
Available with Ubuntu Pro
linux-image-5.4.0-1156-gcp-fips 5.4.0-1156.165+fips1
Available with Ubuntu Pro
linux-image-aws-fips 5.4.0.1153.100
Available with Ubuntu Pro
linux-image-aws-fips-5.4 5.4.0.1153.100
Available with Ubuntu Pro
linux-image-fips 5.4.0.1127.124
Available with Ubuntu Pro
linux-image-fips-5.4 5.4.0.1127.124
Available with Ubuntu Pro
linux-image-gcp-fips 5.4.0.1156.98
Available with Ubuntu Pro
linux-image-gcp-fips-5.4 5.4.0.1156.98
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-7922-2
https://ubuntu.com/security/notices/USN-7922-1
CVE-2022-49026, CVE-2022-49390, CVE-2024-47691, CVE-2024-49935,
CVE-2024-50067, CVE-2024-50095, CVE-2024-50196, CVE-2024-53090,
CVE-2024-53218, CVE-2025-21855, CVE-2025-37958, CVE-2025-38666,
CVE-2025-39964, CVE-2025-39993, CVE-2025-40018

Package Information:
https://launchpad.net/ubuntu/+source/linux-aws-fips/5.4.0-1153.163+fips1
https://launchpad.net/ubuntu/+source/linux-fips/5.4.0-1127.137
https://launchpad.net/ubuntu/+source/linux-gcp-fips/5.4.0-1156.165+fips1