[USN-7988-2] Linux kernel (FIPS) vulnerabilities

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==========================================================================
Ubuntu Security Notice USN-7988-2
January 29, 2026

linux-aws-fips, linux-fips vulnerabilities
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 18.04 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

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:
- Media drivers;
- NVME drivers;
- File systems infrastructure;
- Timer subsystem;
- Memory management;
- Packet sockets;
(CVE-2022-48986, CVE-2024-27078, CVE-2024-49959, CVE-2024-50195,
CVE-2024-56606, CVE-2024-56756, CVE-2025-39993)

Update instructions:

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

Ubuntu 18.04 LTS
linux-image-4.15.0-1143-fips 4.15.0-1143.155
Available with Ubuntu Pro
linux-image-4.15.0-2126-aws-fips 4.15.0-2126.132
Available with Ubuntu Pro
linux-image-aws-fips 4.15.0.2126.120
Available with Ubuntu Pro
linux-image-aws-fips-4.15 4.15.0.2126.120
Available with Ubuntu Pro
linux-image-fips 4.15.0.1143.140
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-7988-2
https://ubuntu.com/security/notices/USN-7988-1
CVE-2022-48986, CVE-2024-27078, CVE-2024-49959, CVE-2024-50195,
CVE-2024-56606, CVE-2024-56756, CVE-2025-39993

Package Information:
https://launchpad.net/ubuntu/+source/linux-aws-fips/4.15.0-2126.132
https://launchpad.net/ubuntu/+source/linux-fips/4.15.0-1143.155