[USN-7907-5] Linux kernel kernel vulnerabilities
[USN-7907-5] Linux kernel kernel vulnerabilities
==========================================================================
Ubuntu Security Notice USN-7907-5
December 12, 2025
linux-azure, linux-azure-4.15, linux-oracle, 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-azure: Linux kernel for Microsoft Azure Cloud systems
- linux-oracle: Linux kernel for Oracle 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:
- 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-4.15.0-1195-azure 4.15.0-1195.210
Available with Ubuntu Pro
linux-image-azure-4.15 4.15.0.1195.163
Available with Ubuntu Pro
linux-image-azure-lts-18.04 4.15.0.1195.163
Available with Ubuntu Pro
Ubuntu 16.04 LTS
linux-image-4.15.0-1149-oracle 4.15.0-1149.160~16.04.1
Available with Ubuntu Pro
linux-image-4.15.0-1195-azure 4.15.0-1195.210~16.04.1
Available with Ubuntu Pro
linux-image-azure 4.15.0.1195.210~16.04.1
Available with Ubuntu Pro
linux-image-oracle 4.15.0.1149.160~16.04.1
Available with Ubuntu Pro
Ubuntu 14.04 LTS
linux-image-4.15.0-1195-azure 4.15.0-1195.210~14.04.1
Available with Ubuntu Pro
linux-image-azure 4.15.0.1195.210~14.04.1
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-7907-5
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
