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Ubuntu 14.04 LTS Linux Kernel Critical System Compromise Fix USN-8361-1

ubuntu
Calendar Grey June 1, 2026
Dist Ubuntu Esm H88
Critical patch available for Ubuntu 14.04 addressing kernel issues that could lead to system compromise.
The system could be compromised under certain conditions.

Summary

The system could be compromised under certain conditions.

Software Description:

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

- linux-lts-xenial: Linux hardware enablement kernel from Xenial for Trusty

Details:

A security issue was discovered in the Linux kernel.

An attacker could possibly use this to compromise the system.

This update corrects flaws in the following subsystem:

- Packet sockets;

(CVE-2026-31504)

Topics%20covered

Topics Covered

security advisory critical Ubuntu system compromise linux-lts-xenial linux-aws

Update Instructions

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

Ubuntu 14.04 LTS
   linux-image-4.4.0-1155-aws      4.4.0-1155.161
                                   Available with Ubuntu Pro
   linux-image-4.4.0-281-generic   4.4.0-281.315~14.04.1
                                   Available with Ubuntu Pro
   linux-image-4.4.0-281-lowlatency  4.4.0-281.315~14.04.1
                                   Available with Ubuntu Pro
   linux-image-aws                 4.4.0.1155.152
                                   Available with Ubuntu Pro
   linux-image-generic-lts-xenial  4.4.0.281.315~14.04.1
                                   Available with Ubuntu Pro
   linux-image-lowlatency-lts-xenial  4.4.0.281.315~14.04.1
                                   Available with Ubuntu Pro
   linux-image-virtual-lts-xenial  4.4.0.281.315~14.04.1
                                   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-8361-1

CVE-2026-31504

Severity
critical
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-8361-1

Topics%20covered

Topics Covered

security advisory critical Ubuntu system compromise linux-lts-xenial linux-aws

Package Information

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