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Ubuntu 16.04 LTS USN-8143-2 Linux-FIPS Kernel Important Update Compromise

ubuntu
Calendar Grey April 2, 2026
Dist Ubuntu Esm H88
Several security issues in Linux kernel fixed in Ubuntu 16.04 LTS update; mandatory reboot recommended.
Several security issues were fixed in the Linux kernel.

Summary

Several security issues were fixed in the Linux kernel.

Software Description:

- 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:

- Cryptographic API;

- GPU drivers;

- BTRFS file system;

- GFS2 file system;

- UDF file system;

- NFC subsystem;

- Network traffic control;

(CVE-2021-47142, CVE-2021-47145, CVE-2021-47254, CVE-2024-46777,

CVE-2025-21735, CVE-2026-23060, CVE-2026-23074)

Topics%20covered

Topics Covered

security advisory kernel update Ubuntu important system compromise linux-fips

Update Instructions

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

Ubuntu 16.04 LTS
   linux-image-4.4.0-1123-fips     4.4.0-1123.130
                                   Available with Ubuntu Pro
   linux-image-fips                4.4.0.1123.124
                                   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-8143-2

https://ubuntu.com/security/notices/USN-8143-1

CVE-2021-47142, CVE-2021-47145, CVE-2021-47254, CVE-2024-46777,

CVE-2025-21735, CVE-2026-23060, CVE-2026-23074

Severity
important
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-8143-2

Topics%20covered

Topics Covered

security advisory kernel update Ubuntu important system compromise linux-fips

Package Information

https://launchpad.net/ubuntu/+source/linux-fips/4.4.0-1123.130

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