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Ubuntu 16.04: USN-7930-2 Linux Kernel Important Fix for System Compromise

ubuntu
Calendar Grey December 15, 2025
Dist Ubuntu Esm H88
Several security issues were fixed in the Linux kernel for Ubuntu 16.04 LTS, enhancing overall system integrity.
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;

- ACPI drivers;

- Hardware monitoring drivers;

- InfiniBand drivers;

- MTD block device drivers;

- Network drivers;

- DesignWare USB3 driver;

- Ceph distributed file system;

- Network file system (NFS) server daemon;

- NILFS2 file system;

- File systems infrastructure;

- Tracing infrastructure;

- Appletalk network protocol;

- IPv6 networking;

- Netfilter;

(CVE-2021-47146, CVE-2021-47269, CVE-2021-47385, CVE-2021-47634,

CVE-2022-49026, CVE-2024-49935, CVE-2024-50067, CVE-2024-50095,

CVE-2024-50179, CVE-2024-53112, CVE-2024-53217, CVE-2025-21715,

CVE-2025-21722, CVE-2025-21811, CVE-2025-21855, CVE-2025-38666,

CVE-2025...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory Ubuntu important system compromise Linux kernel linux-fips

Update Instructions

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

Ubuntu 16.04 LTS
   linux-image-4.4.0-1120-fips     4.4.0-1120.127
                                   Available with Ubuntu Pro
   linux-image-fips                4.4.0.1120.121
                                   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-7930-2

https://ubuntu.com/security/notices/USN-7930-1

CVE-2021-47146, CVE-2021-47269, CVE-2021-47385, CVE-2021-47634,

CVE-2022-49026, CVE-2024-49935, CVE-2024-50067, CVE-2024-50095,

CVE-2024-50179, CVE-2024-53112, CVE-2024-53217, CVE-2025-21715,

CVE-2025-21722, CVE-2025-21811, CVE-2025-21855, CVE-2025-38666,

CVE-2025-39964, CVE-2025-40018

Severity
important
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-7930-2

Topics%20covered

Topics Covered

security advisory Ubuntu important system compromise Linux kernel linux-fips

Package Information

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