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Ubuntu 18.04 & 16.04: Linux Kernel Important Security Update USN-7907-1

ubuntu
Calendar Grey December 3, 2025
Dist Ubuntu Esm H88
Fix critical issues in the Linux kernel for Ubuntu 16.04 and 18.04 with the latest patches to secure your system.
Several security issues were fixed in the Linux kernel.

Summary

Several security issues were fixed in the Linux kernel.

Software Description:

- linux: Linux kernel

- linux-aws: Linux kernel for Amazon Web Services (AWS) systems

- linux-kvm: Linux kernel for cloud environments

- linux-oracle: Linux kernel for Oracle Cloud systems

- linux-aws-hwe: Linux kernel for Amazon Web Services (AWS-HWE) systems

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 vSw...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory Ubuntu important patching system compromise Linux kernel

Update Instructions

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

Ubuntu 18.04 LTS
  linux-image-4.15.0-1149-oracle  4.15.0-1149.160
                                  Available with Ubuntu Pro
  linux-image-4.15.0-1169-kvm     4.15.0-1169.174
                                  Available with Ubuntu Pro
  linux-image-4.15.0-1187-aws     4.15.0-1187.200
                                  Available with Ubuntu Pro
  linux-image-4.15.0-245-generic  4.15.0-245.257
                                  Available with Ubuntu Pro
  linux-image-4.15.0-245-lowlatency  4.15.0-245.257
                                  Available with Ubuntu Pro
  linux-image-aws-4.15            4.15.0.1187.185
                                  Available with Ubuntu Pro
  linux-image-aws-lts-18.04       4.15.0.1187.185
                                  Available with Ubuntu Pro
  linux-image-generic             4.15.0.245.229
                                  Available with Ubuntu Pro
  linux-image-generic-hwe-16.04   4.15.0.245.229
                                  Available with Ubuntu Pro
  linux-image-kvm                 4.15.0.1169.160
                                  Available with Ubuntu Pro
  linux-image-lowlatency          4.15.0.245.229
                                  Available with Ubuntu Pro
  linux-image-lowlatency-hwe-16.04  4.15.0.245.229
                                  Available with Ubuntu Pro
  linux-image-oracle-4.15         4.15.0.1149.154
                                  Available with Ubuntu Pro
  linux-image-oracle-lts-18.04    4.15.0.1149.154
                                  Available with Ubuntu Pro
  linux-image-virtual             4.15.0.245.229
                                  Available with Ubuntu Pro
  linux-image-virtual-hwe-16.04   4.15.0.245.229
                                  Available with Ubuntu Pro

Ubuntu 16.04 LTS
  linux-image-4.15.0-1187-aws     4.15.0-1187.200~16.04.1
                                  Available with Ubuntu Pro
  linux-image-aws-hwe             4.15.0.1187.200~16.04.1
                                  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-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-7907-1

Topics%20covered

Topics Covered

security advisory Ubuntu important patching system compromise Linux kernel

Package Information

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