Home / mailings [USN-8730-2] Linux kernel (Azure) vulnerability
Posted on 15 September 2026
Ubuntu Security==========================================================================Ubuntu Security Notice USN-8730-2
September 15, 2026
linux-azure vulnerability
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 22.04 LTS
Summary:
A security issue was fixed in the Linux kernel.
Software Description:
- linux-azure: Linux kernel for Microsoft Azure Cloud 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;
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 22.04 LTS
linux-image-5.15.0-1121-azure 5.15.0-1121.130
linux-image-azure-5.15 5.15.0.1121.119
linux-image-azure-lts-22.04 5.15.0.1121.119
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-8730-2
https://ubuntu.com/security/notices/USN-8730-1
CVE-2026-53131
Package Information:
https://launchpad.net/ubuntu/+source/linux-azure/5.15.0-1121.130
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