[USN-7988-3] Linux kernel vulnerabilities

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==========================================================================
Ubuntu Security Notice USN-7988-3
February 05, 2026

linux-azure, linux-azure-4.15, linux-gcp, linux-gcp-4.15 vulnerabilities
==========================================================================

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

- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS
- Ubuntu 14.04 LTS

Summary:

Several security issues were fixed in the Linux kernel.

Software Description:
- linux-azure-4.15: Linux kernel for Microsoft Azure Cloud systems
- linux-gcp-4.15: Linux kernel for Google Cloud Platform (GCP) systems
- linux-gcp: Linux kernel for Google Cloud Platform (GCP) systems
- linux-azure: 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:
- Media drivers;
- NVME drivers;
- File systems infrastructure;
- Timer subsystem;
- Memory management;
- Packet sockets;
(CVE-2022-48986, CVE-2024-27078, CVE-2024-49959, CVE-2024-50195,
CVE-2024-56606, CVE-2024-56756, CVE-2025-39993)

Update instructions:

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

Ubuntu 18.04 LTS
linux-image-4.15.0-1181-gcp 4.15.0-1181.198
Available with Ubuntu Pro
linux-image-4.15.0-1196-azure 4.15.0-1196.211
Available with Ubuntu Pro
linux-image-azure-4.15 4.15.0.1196.164
Available with Ubuntu Pro
linux-image-azure-lts-18.04 4.15.0.1196.164
Available with Ubuntu Pro
linux-image-gcp-4.15 4.15.0.1181.194
Available with Ubuntu Pro
linux-image-gcp-lts-18.04 4.15.0.1181.194
Available with Ubuntu Pro

Ubuntu 16.04 LTS
linux-image-4.15.0-1181-gcp 4.15.0-1181.198~16.04.1
Available with Ubuntu Pro
linux-image-gcp 4.15.0.1181.198~16.04.1
Available with Ubuntu Pro
linux-image-gke 4.15.0.1181.198~16.04.1
Available with Ubuntu Pro

Ubuntu 14.04 LTS
linux-image-4.15.0-1196-azure 4.15.0-1196.211~14.04.1
Available with Ubuntu Pro
linux-image-azure 4.15.0.1196.211~14.04.1
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-7988-3
https://ubuntu.com/security/notices/USN-7988-2
https://ubuntu.com/security/notices/USN-7988-1
CVE-2022-48986, CVE-2024-27078, CVE-2024-49959, CVE-2024-50195,
CVE-2024-56606, CVE-2024-56756, CVE-2025-39993