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[USN-8793-1] Linux kernel (Azure CVM) vulnerabilities

Posted on 21 September 2026
Ubuntu Security

==========================================================================Ubuntu Security Notice USN-8793-1
September 21, 2026

linux-azure-fde vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 24.04 LTS

Summary:

Several security issues were fixed in the Linux kernel.

Software Description:
- linux-azure-fde: Linux kernel for Microsoft Azure CVM cloud 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:
- Bluetooth drivers;
- GPU drivers;
- Hardware monitoring drivers;
- SPI subsystem;
- NTFS3 file system;
- io_uring subsystem;
- Ethernet bridge;
- Multipath TCP;
(CVE-2025-71289, CVE-2026-23469, CVE-2026-31420, CVE-2026-31486,
CVE-2026-31560, CVE-2026-46158, CVE-2026-46170, CVE-2026-46275,
CVE-2026-46315)

Update instructions:

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

Ubuntu 24.04 LTS
linux-image-6.8.0-1065-azure-fde 6.8.0-1065.72
linux-image-azure-fde-6.8 6.8.0-1065.72
linux-image-azure-fde-lts-24.04 6.8.0-1065.72

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-8793-1
CVE-2025-71289, CVE-2026-23469, CVE-2026-31420, CVE-2026-31486,
CVE-2026-31560, CVE-2026-46158, CVE-2026-46170, CVE-2026-46275,
CVE-2026-46315

Package Information:
https://launchpad.net/ubuntu/+source/linux-azure-fde/6.8.0-1065.72

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