Ubuntu alert USN-7808-2 (linux-azure-6.8)

From:
             
 
Giampaolo Fresi Roglia <giampaolo.fresi.roglia@canonical.com>
To:
             
 
ubuntu-security-announce@lists.ubuntu.com
Subject:
             
 
[USN-7808-2] Linux kernel (Azure) vulnerabilities
Date:
             
 
Tue, 14 Oct 2025 18:04:09 +0200
Message-ID:
             
 
<87frbl31xi.fsf@canonical.com>
==========================================================================
Ubuntu Security Notice USN-7808-2
October 14, 2025

linux-azure-6.8 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-6.8: Linux kernel for Microsoft Azure 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:
  - Network drivers;
  - Ext4 file system;
  - SMB network file system;
  - Packet sockets;
  - Network traffic control;
  - TLS protocol;
  - VMware vSockets driver;
  - XFRM subsystem;
(CVE-2025-38617, CVE-2025-37756, CVE-2025-38683, CVE-2025-38477,
CVE-2025-38500, CVE-2025-37785, CVE-2025-38618, CVE-2025-38244)

Update instructions:

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

Ubuntu 22.04 LTS
  linux-image-6.8.0-1040-azure    6.8.0-1040.46~22.04.1
  linux-image-6.8.0-1040-azure-fde  6.8.0-1040.46~22.04.1
  linux-image-azure               6.8.0-1040.46~22.04.1
  linux-image-azure-6.8           6.8.0-1040.46~22.04.1
  linux-image-azure-fde           6.8.0-1040.46~22.04.1
  linux-image-azure-fde-6.8       6.8.0-1040.46~22.04.1

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-7808-2
  https://ubuntu.com/security/notices/USN-7808-1
  CVE-2025-37756, CVE-2025-37785, CVE-2025-38244, CVE-2025-38477,
  CVE-2025-38500, CVE-2025-38617, CVE-2025-38618, CVE-2025-38683

Package Information:
  https://launchpad.net/ubuntu/+source/linux-azure-6.8/6.8....



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