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From: Rodrigo Figueiredo Zaiden <rodrigo.zaiden@canonical.com>
Reply-To: "Security@Ubuntu.com" <Security@ubuntu.com>
To: ubuntu-security-announce@lists.ubuntu.com
Message-ID: <15fa7745-7308-4136-9fc5-9dddfcc47ca6@canonical.com>
Subject: [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

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