Ubuntu alert USN-7727-1 (linux, linux-aws, linux-kvm, linux-lts-xenial)

From:
             
 
Rodrigo Figueiredo Zaiden <rodrigo.zaiden@canonical.com>
To:
             
 
ubuntu-security-announce@lists.ubuntu.com
Subject:
             
 
[USN-7727-1] Linux kernel vulnerabilities
Date:
             
 
Thu, 28 Aug 2025 20:45:04 -0300
Message-ID:
             
 
<8b624f84-b89d-45a8-9c92-e0d40325159d@canonical.com>
==========================================================================
Ubuntu Security Notice USN-7727-1
August 28, 2025

linux, linux-aws, linux-kvm, linux-lts-xenial vulnerabilities
==========================================================================

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

- Ubuntu 16.04 LTS
- Ubuntu 14.04 LTS

Summary:

Several security issues were fixed in the Linux kernel.

Software Description:
- linux: Linux kernel
- linux-kvm: Linux kernel for cloud environments
- linux-aws: Linux kernel for Amazon Web Services (AWS) systems
- linux-lts-xenial: Linux hardware enablement kernel from Xenial for Trusty

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:
   - InfiniBand drivers;
   - Media drivers;
   - SPI subsystem;
   - USB core drivers;
   - NILFS2 file system;
   - IPv6 networking;
   - Network traffic control;
(CVE-2024-50051, CVE-2025-37752, CVE-2024-53130, CVE-2024-47685,
CVE-2024-27074, CVE-2023-52477, CVE-2024-50202, CVE-2021-47345,
CVE-2024-57996, CVE-2024-53131)

Update instructions:

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

Ubuntu 16.04 LTS
   linux-image-4.4.0-1148-kvm      4.4.0-1148.159
                                   Available with Ubuntu Pro
   linux-image-4.4.0-272-generic   4.4.0-272.306
                                   Available with Ubuntu Pro
   linux-image-4.4.0-272-lowlatency  4.4.0-272.306
                                   Available with Ubuntu Pro
   linux-image-generic             4.4.0.272.278
                                   Available with Ubuntu Pro
   linux-image-generic-lts-xenial  4.4.0.272.278
                                   Available with Ubuntu Pro
   linux-image-kvm                 4.4.0.1148.145
                                   Available with Ubuntu Pro
   linux-image-lowlatency          4.4.0.272.278
                                   Available with Ubuntu Pro
   linux-image-lowlatency-lts-xenial  4.4.0.272.278
                                   Available with Ubuntu Pro
   linux-image-virtual             4.4.0.272.278
                                   Available with Ubuntu Pro
   linux-image-virtual-lts-xenial  4.4.0.272.278
                                   Available with Ubuntu Pro

Ubuntu 14.04 LTS
   linux-image-4.4.0-1147-aws      4.4.0-1147.153
                                   Available with Ubuntu Pro
   linux-image-4.4.0-272-generic   4.4.0-272.306~14.04.1
                                   Available with Ubuntu Pro
   linux-image-4.4.0-272-lowlatency  4.4.0-272.306~14.04.1
                                   Available with Ubuntu Pro
   linux-image-aws                 4.4.0.1147.144
                                   Available with Ubuntu Pro
   linux-image-generic-lts-xenial  4.4.0.272.306~14.04.1
                                   Available with Ubuntu Pro
   linux-image-lowlatency-lts-xenial  4.4.0.272.306~14.04.1
                                   Available with Ubuntu Pro
   linux-image-virtual-lts-xenial  4.4.0.272.306~14.04.1
                                   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-7727-1
   CVE-2021-47345, CVE-2023-52477, CVE-2024-27074, CVE-2024-47685,
   CVE-2024-50051, CVE-2024-50202, CVE-2024-53130, CVE-2024-53131,
   CVE-2024-57996, CVE-2025-37752



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