Ubuntu alert USN-7819-2 (linux-azure-fips)

From:
             
 
Rodrigo Figueiredo Zaiden <rodrigo.zaiden@canonical.com>
To:
             
 
ubuntu-security-announce@lists.ubuntu.com
Subject:
             
 
[USN-7819-2] Linux kernel (Azure FIPS) vulnerabilities
Date:
             
 
Tue, 21 Oct 2025 19:27:31 -0300
Message-ID:
             
 
<4d8240d8-e182-43f7-8c62-8fb9918afb7b@canonical.com>
==========================================================================
Ubuntu Security Notice USN-7819-2
October 21, 2025

linux-azure-fips vulnerabilities
==========================================================================

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

- Ubuntu 20.04 LTS

Summary:

Several security issues were fixed in the Linux kernel.

Software Description:
- linux-azure-fips: Linux kernel for Microsoft Azure Cloud systems with FIPS

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;
   - Device tree and open firmware driver;
   - SCSI subsystem;
   - TTY drivers;
   - Ext4 file system;
   - Network file system (NFS) server daemon;
   - SMB network file system;
   - Bluetooth subsystem;
   - Packet sockets;
   - Network traffic control;
   - VMware vSockets driver;
(CVE-2025-38350, CVE-2024-57996, CVE-2025-37752, CVE-2025-38617,
CVE-2025-38477, CVE-2025-38083, CVE-2024-38541, CVE-2023-52757,
CVE-2023-52975, CVE-2025-38618, CVE-2024-49950, CVE-2024-50073,
CVE-2025-37785, CVE-2025-21796, CVE-2025-38683, CVE-2025-37797)

Update instructions:

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

Ubuntu 20.04 LTS
   linux-image-5.4.0-1155-azure-fips  5.4.0-1155.162+fips1
                                   Available with Ubuntu Pro
   linux-image-azure-fips          5.4.0.1155.92
                                   Available with Ubuntu Pro
   linux-image-azure-fips-5.4      5.4.0.1155.92
                                   Available with Ubuntu Pro

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-7819-2
   https://ubuntu.com/security/notices/USN-7819-1
   CVE-2023-52757, CVE-2023-52975, CVE-2024-38541, CVE-2024-49950,
   CVE-2024-50073, CVE-2024-57996, CVE-2025-21796, CVE-2025-37752,
   CVE-2025-37785, CVE-2025-37797, CVE-2025-38083, CVE-2025-38350,
   CVE-2025-38477, CVE-2025-38617, CVE-2025-38618, CVE-2025-38683

Package Information:
   https://launchpad.net/ubuntu/+source/linux-azure-fips/5.4...



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