Ubuntu alert USN-7987-1 (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-7987-1] Linux kernel vulnerabilities
Date:
             
 
Thu, 29 Jan 2026 20:26:49 -0300
Message-ID:
             
 
<37d34fd9-7b4e-4b72-aa27-941287545530@canonical.com>
==========================================================================
Ubuntu Security Notice USN-7987-1
January 29, 2026

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-aws: Linux kernel for Amazon Web Services (AWS) systems
- linux-kvm: Linux kernel for cloud environments
- 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;
   - File systems infrastructure;
   - Timer subsystem;
   - Packet sockets;
   - Network traffic control;
(CVE-2021-47485, CVE-2024-49959, CVE-2024-50195, CVE-2024-53164,
CVE-2024-56606, CVE-2025-39993)

Update instructions:

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

Ubuntu 16.04 LTS
   linux-image-4.4.0-1152-kvm      4.4.0-1152.163
                                   Available with Ubuntu Pro
   linux-image-4.4.0-1189-aws      4.4.0-1189.204
                                   Available with Ubuntu Pro
   linux-image-4.4.0-277-generic   4.4.0-277.311
                                   Available with Ubuntu Pro
   linux-image-4.4.0-277-lowlatency  4.4.0-277.311
                                   Available with Ubuntu Pro
   linux-image-aws                 4.4.0.1189.193
                                   Available with Ubuntu Pro
   linux-image-generic             4.4.0.277.283
                                   Available with Ubuntu Pro
   linux-image-generic-lts-xenial  4.4.0.277.283
                                   Available with Ubuntu Pro
   linux-image-kvm                 4.4.0.1152.149
                                   Available with Ubuntu Pro
   linux-image-lowlatency          4.4.0.277.283
                                   Available with Ubuntu Pro
   linux-image-lowlatency-lts-xenial  4.4.0.277.283
                                   Available with Ubuntu Pro
   linux-image-virtual             4.4.0.277.283
                                   Available with Ubuntu Pro
   linux-image-virtual-lts-xenial  4.4.0.277.283
                                   Available with Ubuntu Pro

Ubuntu 14.04 LTS
   linux-image-4.4.0-1151-aws      4.4.0-1151.157
                                   Available with Ubuntu Pro
   linux-image-4.4.0-277-generic   4.4.0-277.311~14.04.1
                                   Available with Ubuntu Pro
   linux-image-4.4.0-277-lowlatency  4.4.0-277.311~14.04.1
                                   Available with Ubuntu Pro
   linux-image-aws                 4.4.0.1151.148
                                   Available with Ubuntu Pro
   linux-image-generic-lts-xenial  4.4.0.277.311~14.04.1
                                   Available with Ubuntu Pro
   linux-image-lowlatency-lts-xenial  4.4.0.277.311~14.04.1
                                   Available with Ubuntu Pro
   linux-image-virtual-lts-xenial  4.4.0.277.311~14.04.1
                                   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-7987-1
   CVE-2021-47485, CVE-2024-49959, CVE-2024-50195, CVE-2024-53164,
   CVE-2024-56606, CVE-2025-39993



Attachment: OpenPGP_signature.asc (type=application/pgp-signature)
-----BEGIN PGP SIGNATURE-----

wsB5BAABCAAjFiEEYrygdx1GDec9TV8EZ0GeRcM5nt0FAml77LkFAwAAAAAACgkQZ0GeRcM5nt1+
Rwf/dKkj0UsKsZWk5GaL85JrEKBqcOKr04Cx0+RowHeoR5zVx+G/FpPYSdh3QVF/K3JPWYmN6Zum
GW0FrP6PJGIOpmaFTMlxRinsElwEf4PN7eYp3SqoQcUYiQBRK03KsJMrq4nB4hTV4BxGXqXfDOxm
A/tRJmHzMp1Jo3uvkYIp7OyFEsOOeXVNkbdyZ+oNkM4EbyLSlQxxMBDt0foZsNodUlK3LQO7r+2J
thys6n9GA2nTA0XF/WSdzknXK+d6mflbiJnYiJ04GnC0+IAVWS/s22rZzEvpPqIM/JHVLlN7MPgM
G24efvz4QmEwVqRayqneQqLksgzIQkQMvBLCGLRYDQ==
=4yfF
-----END PGP SIGNATURE-----