Ubuntu Security Notices
USN-8659-1

USN-8659-1: Linux kernel vulnerability

Publication date

20 August 2026

Overview

A security issue was fixed in the Linux kernel.

Releases

26.04 LTS 24.04 LTS

Packages

linux - Linux kernel
linux-aws - Linux kernel for Amazon Web Services (AWS) systems
linux-aws-7.0 - Linux kernel for Amazon Web Services (AWS) systems
linux-ibm - Linux kernel for IBM cloud systems
linux-oem-7.0 - Linux kernel for OEM systems
linux-raspi - Linux kernel for Raspberry Pi systems
linux-realtime - Linux kernel for Real-time systems

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 subsystems:

Open vSwitch

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 subsystems:

Open vSwitch

Update instructions

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

Learn more about how to get the fixes.

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.

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

Ubuntu Release	Package Version
26.04 LTS resolute	linux-image-7.0.0-1011-aws – 7.0.0-1011.11
	linux-image-7.0.0-1011-aws-64k – 7.0.0-1011.11
	linux-image-7.0.0-1011-oem – 7.0.0-1011.11
	linux-image-7.0.0-1012-ibm – 7.0.0-1012.12
	linux-image-7.0.0-1017-raspi – 7.0.0-1017.17
	linux-image-7.0.0-1017-raspi-realtime – 7.0.0-1017.17
	linux-image-7.0.0-30-generic – 7.0.0-30.30
	linux-image-7.0.0-30-generic-64k – 7.0.0-30.30
	linux-image-7.0.0-30-realtime – 7.0.0-30.30.1
	linux-image-7.0.0-30-realtime-64k – 7.0.0-30.30.1
	linux-image-aws – 7.0.0-1011.11
	linux-image-aws-64k – 7.0.0-1011.11
	linux-image-aws-64k-7.0 – 7.0.0-1011.11
	linux-image-aws-7.0 – 7.0.0-1011.11
	linux-image-generic – 7.0.0-30.30
	linux-image-generic-64k – 7.0.0-30.30
	linux-image-generic-64k-7.0 – 7.0.0-30.30
	linux-image-generic-64k-hwe-26.04 – 7.0.0-30.30
	linux-image-generic-7.0 – 7.0.0-30.30
	linux-image-generic-hwe-26.04 – 7.0.0-30.30
	linux-image-ibm – 7.0.0-1012.12
	linux-image-ibm-7.0 – 7.0.0-1012.12
	linux-image-oem-26.04 – 7.0.0-1011.11
	linux-image-oem-26.04a – 7.0.0-1011.11
	linux-image-oem-7.0 – 7.0.0-1011.11
	linux-image-raspi – 7.0.0-1017.17
	linux-image-raspi-7.0 – 7.0.0-1017.17
	linux-image-raspi-realtime – 7.0.0-1017.17
	linux-image-raspi-realtime-7.0 – 7.0.0-1017.17
	linux-image-realtime – 7.0.0-30.30.1
	linux-image-realtime-64k – 7.0.0-30.30.1
	linux-image-realtime-64k-7.0 – 7.0.0-30.30.1
	linux-image-realtime-64k-hwe-26.04 – 7.0.0-30.30.1
	linux-image-realtime-7.0 – 7.0.0-30.30.1
	linux-image-realtime-hwe-26.04 – 7.0.0-30.30.1
	linux-image-virtual – 7.0.0-30.30
	linux-image-virtual-7.0 – 7.0.0-30.30
	linux-image-virtual-hwe-26.04 – 7.0.0-30.30
24.04 LTS noble	linux-image-7.0.0-1011-aws – 7.0.0-1011.11~24.04.1
	linux-image-7.0.0-1011-aws-64k – 7.0.0-1011.11~24.04.1
	linux-image-aws – 7.0.0-1011.11~24.04.1
	linux-image-aws-64k – 7.0.0-1011.11~24.04.1
	linux-image-aws-64k-7.0 – 7.0.0-1011.11~24.04.1
	linux-image-aws-7.0 – 7.0.0-1011.11~24.04.1