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Ubuntu 16.04 & 14.04: Linux Kernel Critical Security Update USN-7930-1

ubuntu
Calendar Grey December 15, 2025
Dist Ubuntu Esm H88
Critical security issues fixed in Ubuntu Linux kernel. Update recommended for immediate protection against exploits.
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-lts-xenial: Linux hardware enablement kernel from Xenial for Trusty

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-2024-4...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory critical Ubuntu kernel updates system compromise Linux kernel

Update Instructions

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

Ubuntu 16.04 LTS
   linux-image-4.4.0-1151-kvm      4.4.0-1151.162
                                   Available with Ubuntu Pro
   linux-image-4.4.0-1188-aws      4.4.0-1188.203
                                   Available with Ubuntu Pro
   linux-image-4.4.0-276-generic   4.4.0-276.310
                                   Available with Ubuntu Pro
   linux-image-4.4.0-276-lowlatency  4.4.0-276.310
                                   Available with Ubuntu Pro
   linux-image-aws                 4.4.0.1188.192
                                   Available with Ubuntu Pro
   linux-image-generic             4.4.0.276.282
                                   Available with Ubuntu Pro
   linux-image-generic-lts-xenial  4.4.0.276.282
                                   Available with Ubuntu Pro
   linux-image-kvm                 4.4.0.1151.148
                                   Available with Ubuntu Pro
   linux-image-lowlatency          4.4.0.276.282
                                   Available with Ubuntu Pro
   linux-image-lowlatency-lts-xenial  4.4.0.276.282
                                   Available with Ubuntu Pro
   linux-image-virtual             4.4.0.276.282
                                   Available with Ubuntu Pro
   linux-image-virtual-lts-xenial  4.4.0.276.282
                                   Available with Ubuntu Pro

Ubuntu 14.04 LTS
   linux-image-4.4.0-1150-aws      4.4.0-1150.156
                                   Available with Ubuntu Pro
   linux-image-4.4.0-276-generic   4.4.0-276.310~14.04.1
                                   Available with Ubuntu Pro
   linux-image-4.4.0-276-lowlatency  4.4.0-276.310~14.04.1
                                   Available with Ubuntu Pro
   linux-image-aws                 4.4.0.1150.147
                                   Available with Ubuntu Pro
   linux-image-generic-lts-xenial  4.4.0.276.310~14.04.1
                                   Available with Ubuntu Pro
   linux-image-lowlatency-lts-xenial  4.4.0.276.310~14.04.1
                                   Available with Ubuntu Pro
   linux-image-virtual-lts-xenial  4.4.0.276.310~14.04.1
                                   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-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
critical
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-7930-1

Topics%20covered

Topics Covered

security advisory critical Ubuntu kernel updates system compromise Linux kernel

Package Information

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