Ubuntu Security Notices
USN-8730-5

USN-8730-5: Linux kernel vulnerability

Publication date

22 September 2026

Overview

A security issue was fixed in the Linux kernel.

Releases

22.04 LTS 20.04 LTS

Packages

linux-aws - Linux kernel for Amazon Web Services (AWS) systems
linux-aws-5.15 - Linux kernel for Amazon Web Services (AWS) systems
linux-aws-fips - Linux kernel for Amazon Web Services (AWS) systems with FIPS
linux-nvidia-tegra-igx - Linux kernel for NVIDIA Tegra IGX 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:

IPv6 networking;
Netfilter

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:

IPv6 networking;
Netfilter

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
22.04 LTS jammy	linux-image-5.15.0-1056-nvidia-tegra-igx – 5.15.0-1056.56
	linux-image-5.15.0-1056-nvidia-tegra-igx-rt – 5.15.0-1056.56
	linux-image-5.15.0-1115-aws – 5.15.0-1115.122
	linux-image-5.15.0-1115-aws-64k – 5.15.0-1115.122
	linux-image-5.15.0-1115-aws-fips – 5.15.0-1115.122+fips1
	linux-image-aws-5.15 – 5.15.0.1115.118
	linux-image-aws-64k-5.15 – 5.15.0.1115.118
	linux-image-aws-64k-lts-22.04 – 5.15.0.1115.118
	linux-image-aws-fips – 5.15.0.1115.111
	linux-image-aws-fips-5.15 – 5.15.0.1115.111
	linux-image-aws-lts-22.04 – 5.15.0.1115.118
	linux-image-nvidia-tegra-igx – 5.15.0.1056.58
	linux-image-nvidia-tegra-igx-5.15 – 5.15.0.1056.58
	linux-image-nvidia-tegra-igx-rt – 5.15.0.1056.58
	linux-image-nvidia-tegra-igx-rt-5.15 – 5.15.0.1056.58
20.04 LTS focal	linux-image-5.15.0-1115-aws – 5.15.0-1115.122~20.04.1
	linux-image-aws – 5.15.0.1115.122~20.04.1
	linux-image-aws-5.15 – 5.15.0.1115.122~20.04.1