Alerts This Week
Warning Icon 1 640
Alerts This Week
Warning Icon 1 640

Ubuntu 18.04 LTS USN-8145-1 Linux Kernel Critical Attack Risks

ubuntu
Calendar Grey April 2, 2026
Dist Ubuntu Esm H88
Multiple critical issues fixed in Ubuntu Linux kernel affecting various releases, necessitating prompt updates for security.
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:

- ARM64 architecture;

- Cryptographic API;

- UDF file system;

- NFC subsystem;

- Network traffic control;

(CVE-2024-46777, CVE-2025-21735, CVE-2025-37849, CVE-2026-23060,

CVE-2026-23074)

Topics%20covered

Topics Covered

security advisory critical kernel patch Ubuntu 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-4.15.0-1152-oracle  4.15.0-1152.163
                                   Available with Ubuntu Pro
   linux-image-4.15.0-1172-kvm     4.15.0-1172.177
                                   Available with Ubuntu Pro
   linux-image-4.15.0-1190-aws     4.15.0-1190.203
                                   Available with Ubuntu Pro
   linux-image-4.15.0-248-generic  4.15.0-248.260
                                   Available with Ubuntu Pro
   linux-image-4.15.0-248-lowlatency  4.15.0-248.260
                                   Available with Ubuntu Pro
   linux-image-aws-4.15            4.15.0.1190.188
                                   Available with Ubuntu Pro
   linux-image-aws-lts-18.04       4.15.0.1190.188
                                   Available with Ubuntu Pro
   linux-image-generic             4.15.0.248.232
                                   Available with Ubuntu Pro
   linux-image-kvm                 4.15.0.1172.163
                                   Available with Ubuntu Pro
   linux-image-lowlatency          4.15.0.248.232
                                   Available with Ubuntu Pro
   linux-image-oracle-4.15         4.15.0.1152.157
                                   Available with Ubuntu Pro
   linux-image-oracle-lts-18.04    4.15.0.1152.157
                                   Available with Ubuntu Pro
   linux-image-virtual             4.15.0.248.232
                                   Available with Ubuntu Pro

Ubuntu 16.04 LTS
   linux-image-4.15.0-1190-aws     4.15.0-1190.203~16.04.1
                                   Available with Ubuntu Pro
   linux-image-aws-hwe             4.15.0.1190.203~16.04.1
                                   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-8145-1

CVE-2024-46777, CVE-2025-21735, CVE-2025-37849, CVE-2026-23060,

CVE-2026-23074

Severity
critical
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-8145-1

Topics%20covered

Topics Covered

security advisory critical kernel patch Ubuntu system compromise Linux kernel

Package Information

Get the latest News and Insights

Get the latest Linux and open source security news straight to your inbox.

Your message here