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Ubuntu 18.04: USN-7907-2 Linux Kernel Important Security Issues

ubuntu
Calendar Grey December 3, 2025
Dist Ubuntu Esm H88
Multiple security fixes have been applied to the Linux kernel on Ubuntu 18.04 LTS for system stability and security.
Several security issues were fixed in the Linux kernel.

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:

- Cryptographic API;

- ACPI drivers;

- Hardware monitoring drivers;

- InfiniBand drivers;

- Mailbox framework;

- Network drivers;

- AFS file system;

- Ceph distributed file system;

- Network file system (NFS) server daemon;

- NILFS2 file system;

- File systems infrastructure;

- KVM subsystem;

- L3 Master device support module;

- Tracing infrastructure;

- Memory management;

- Appletalk network protocol;

- Netfilter;

- Open vSwitch;

(CVE-2021-47385, CVE-2022-49026, CVE-2022-49390, CVE-2024-49935,

CVE-2024-49963, CVE-2024-50067, CVE-2024-50095, CVE-2024-50179,

CVE-2024-5...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory Ubuntu important system compromise Linux kernel AWS

Update Instructions

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

Ubuntu 18.04 LTS
  linux-image-4.15.0-1142-fips    4.15.0-1142.154
                                  Available with Ubuntu Pro
  linux-image-4.15.0-2125-aws-fips  4.15.0-2125.131
                                  Available with Ubuntu Pro
  linux-image-aws-fips            4.15.0.2125.119
                                  Available with Ubuntu Pro
  linux-image-aws-fips-4.15       4.15.0.2125.119
                                  Available with Ubuntu Pro
  linux-image-fips                4.15.0.1142.139
                                  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.

After a standard system update you need to reboot your computer to make
all the necessary changes.

References

https://ubuntu.com/security/notices/USN-7907-2

https://ubuntu.com/security/notices/USN-7907-1

CVE-2021-47385, CVE-2022-49026, CVE-2022-49390, CVE-2024-49935,

CVE-2024-49963, CVE-2024-50067, CVE-2024-50095, CVE-2024-50179,

CVE-2024-53090, CVE-2024-53112, CVE-2024-53217, CVE-2024-58083,

CVE-2025-21715, CVE-2025-21722, CVE-2025-21761, CVE-2025-21791,

CVE-2025-21811, CVE-2025-21855, CVE-2025-37958, CVE-2025-38666,

CVE-2025-39964, CVE-2025-40018

Severity
important
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-7907-2

Topics%20covered

Topics Covered

security advisory Ubuntu important system compromise Linux kernel AWS

Package Information

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