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==========================================================================
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
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