[USN-7420-1] Linux kernel (Azure) vulnerabilities

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==========================================================================
Ubuntu Security Notice USN-7420-1
April 07, 2025

linux-azure, linux-azure-fde vulnerabilities
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 22.04 LTS

Summary:

Several security issues were fixed in the Linux kernel.

Software Description:
- linux-azure: Linux kernel for Microsoft Azure Cloud systems
- 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:
- GPU drivers;
- Microsoft Azure Network Adapter (MANA) driver;
- SMB network file system;
- Network namespace;
- Networking core;
(CVE-2024-35864, CVE-2024-56658, CVE-2024-57798, CVE-2024-42069,
CVE-2024-26928)

Update instructions:

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

Ubuntu 22.04 LTS
linux-image-5.15.0-1086-azure 5.15.0-1086.95
linux-image-5.15.0-1086-azure-fde 5.15.0-1086.95.1
linux-image-azure-fde-lts-22.04 5.15.0.1086.95.63
linux-image-azure-lts-22.04 5.15.0.1086.84

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-7420-1
CVE-2024-26928, CVE-2024-35864, CVE-2024-42069, CVE-2024-56658,
CVE-2024-57798

Package Information:
https://launchpad.net/ubuntu/+source/linux-azure/5.15.0-1086.95
https://launchpad.net/ubuntu/+source/linux-azure-fde/5.15.0-1086.95.1