==========================================================================
Ubuntu Security Notice USN-7907-4
December 04, 2025
linux-gcp-fips vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 18.04 LTS
Summary:
Several security issues were fixed in the Linux kernel.
Software Description:
- linux-gcp-fips: Linux kernel for Google Cloud Platform (GCP) 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:
 - Cryptographic API;
 - ACPI drivers;
 - Hardware monitoring drivers;
 - InfiniBand drivers;
 - Mailbox framework;
 - Network drivers;
 - AFS file system;
 - Ceph distributed file system;
 - Network file system (NFS) server daemon;
 - NILFS2 file system;
 - File systems infrastructure;
 - KVM subsystem;
 - L3 Master device support module;
 - Tracing infrastructure;
 - Memory management;
 - Appletalk network protocol;
 - Netfilter;
 - Open vSwitch;
(CVE-2021-47385, CVE-2022-49026, CVE-2022-49390, CVE-2024-49935,
CVE-2024-49963, CVE-2024-50067, CVE-2024-50095, CVE-2024-50179,
CVE-2024-53090, CVE-2024-53112, CVE-2024-53217, CVE-2024-58083,
CVE-2025-21715, CVE-2025-21722, CVE-2025-21761, CVE-2025-21791,
CVE-2025-21811, CVE-2025-21855, CVE-2025-37958, CVE-2025-38666,
CVE-2025-39964, CVE-2025-40018)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 18.04 LTS
 linux-image-4.15.0-2088-gcp-fips 4.15.0-2088.94
 Available with Ubuntu Pro
 linux-image-gcp-fips 4.15.0.2088.86
 Available with Ubuntu Pro
 linux-image-gcp-fips-4.15 4.15.0.2088.86
 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-7907-4
 https://ubuntu.com/security/notices/USN-7907-3
 https://ubuntu.com/security/notices/USN-7907-2
 https://ubuntu.com/security/notices/USN-7907-1
 CVE-2021-47385, CVE-2022-49026, CVE-2022-49390, CVE-2024-49935,
 CVE-2024-49963, CVE-2024-50067, CVE-2024-50095, CVE-2024-50179,
 CVE-2024-53090, CVE-2024-53112, CVE-2024-53217, CVE-2024-58083,
 CVE-2025-21715, CVE-2025-21722, CVE-2025-21761, CVE-2025-21791,
 CVE-2025-21811, CVE-2025-21855, CVE-2025-37958, CVE-2025-38666,
 CVE-2025-39964, CVE-2025-40018
Package Information:
 https://launchpad.net/ubuntu/+source/linux-gcp-fips/4.15.0-2088.94