========================================================================== Ubuntu Security Notice USN-8013-1 February 04, 2026
linux, linux-aws, linux-azure, linux-azure-5.15, linux-gcp, linux-gke,
linux-gkeop, linux-hwe-5.15, linux-ibm, linux-ibm-5.15, linux-intel-iotg,
linux-intel-iotg-5.15, linux-kvm, linux-lowlatency,
linux-lowlatency-hwe-5.15, linux-nvidia, linux-nvidia-tegra,
linux-nvidia-tegra-5.15, linux-oracle, linux-raspi vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 22.04 LTS
- Ubuntu 20.04 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-azure: Linux kernel for Microsoft Azure Cloud systems
- linux-gcp: Linux kernel for Google Cloud Platform (GCP) systems
- linux-gke: Linux kernel for Google Container Engine (GKE) systems
- linux-gkeop: Linux kernel for Google Container Engine (GKE) systems
- linux-ibm: Linux kernel for IBM cloud systems
- linux-intel-iotg: Linux kernel for Intel IoT platforms
- linux-kvm: Linux kernel for cloud environments
- linux-lowlatency: Linux low latency kernel
- linux-nvidia: Linux kernel for NVIDIA systems
- linux-nvidia-tegra: Linux kernel for NVIDIA Tegra systems
- linux-oracle: Linux kernel for Oracle Cloud systems
- linux-raspi: Linux kernel for Raspberry Pi systems
- linux-azure-5.15: Linux kernel for Microsoft Azure cloud systems
- linux-hwe-5.15: Linux hardware enablement (HWE) kernel
- linux-ibm-5.15: Linux kernel for IBM cloud systems
- linux-intel-iotg-5.15: Linux kernel for Intel IoT platforms
- linux-lowlatency-hwe-5.15: Linux low latency kernel
- linux-nvidia-tegra-5.15: Linux kernel for NVIDIA Tegra 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;
- SMB network file system;
(CVE-2025-38561, CVE-2025-40019)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 22.04 LTS
linux-image-5.15.0-1051-nvidia-tegra 5.15.0-1051.51
linux-image-5.15.0-1051-nvidia-tegra-rt 5.15.0-1051.51
linux-image-5.15.0-1082-gkeop 5.15.0-1082.90
linux-image-5.15.0-1091-kvm 5.15.0-1091.96
linux-image-5.15.0-1093-ibm 5.15.0-1093.96
linux-image-5.15.0-1093-raspi 5.15.0-1093.96
linux-image-5.15.0-1094-intel-iotg 5.15.0-1094.100
linux-image-5.15.0-1094-nvidia 5.15.0-1094.95
linux-image-5.15.0-1094-nvidia-lowlatency 5.15.0-1094.95
linux-image-5.15.0-1095-gke 5.15.0-1095.101
linux-image-5.15.0-1096-oracle 5.15.0-1096.102
linux-image-5.15.0-1099-aws 5.15.0-1099.106
linux-image-5.15.0-1099-aws-64k 5.15.0-1099.106
linux-image-5.15.0-1099-gcp 5.15.0-1099.108
linux-image-5.15.0-1103-azure 5.15.0-1103.112
linux-image-5.15.0-168-generic 5.15.0-168.178
linux-image-5.15.0-168-generic-64k 5.15.0-168.178
linux-image-5.15.0-168-generic-lpae 5.15.0-168.178
linux-image-5.15.0-168-lowlatency 5.15.0-168.178
linux-image-5.15.0-168-lowlatency-64k 5.15.0-168.178
linux-image-aws-5.15 5.15.0.1099.102
linux-image-aws-64k-5.15 5.15.0.1099.102
linux-image-aws-64k-lts-22.04 5.15.0.1099.102
linux-image-aws-lts-22.04 5.15.0.1099.102
linux-image-azure-5.15 5.15.0.1103.101
linux-image-azure-lts-22.04 5.15.0.1103.101
linux-image-gcp-5.15 5.15.0.1099.95
linux-image-gcp-lts-22.04 5.15.0.1099.95
linux-image-generic 5.15.0.168.159
linux-image-generic-5.15 5.15.0.168.159
linux-image-generic-64k 5.15.0.168.159
linux-image-generic-64k-5.15 5.15.0.168.159
linux-image-generic-lpae 5.15.0.168.159
linux-image-generic-lpae-5.15 5.15.0.168.159
linux-image-gke 5.15.0.1095.94
linux-image-gke-5.15 5.15.0.1095.94
linux-image-gkeop 5.15.0.1082.81
linux-image-gkeop-5.15 5.15.0.1082.81
linux-image-ibm 5.15.0.1093.89
linux-image-ibm-5.15 5.15.0.1093.89
linux-image-intel-iotg 5.15.0.1094.94
linux-image-intel-iotg-5.15 5.15.0.1094.94
linux-image-kvm 5.15.0.1091.87
linux-image-kvm-5.15 5.15.0.1091.87
linux-image-lowlatency 5.15.0.168.142
linux-image-lowlatency-5.15 5.15.0.168.142
linux-image-lowlatency-64k 5.15.0.168.142
linux-image-lowlatency-64k-5.15 5.15.0.168.142
linux-image-nvidia 5.15.0.1094.94
linux-image-nvidia-5.15 5.15.0.1094.94
linux-image-nvidia-lowlatency 5.15.0.1094.94
linux-image-nvidia-lowlatency-5.15 5.15.0.1094.94
linux-image-nvidia-tegra 5.15.0.1051.51
linux-image-nvidia-tegra-5.15 5.15.0.1051.51
linux-image-nvidia-tegra-rt 5.15.0.1051.51
linux-image-nvidia-tegra-rt-5.15 5.15.0.1051.51
linux-image-oracle-5.15 5.15.0.1096.92
linux-image-oracle-lts-22.04 5.15.0.1096.92
linux-image-raspi 5.15.0.1093.91
linux-image-raspi-5.15 5.15.0.1093.91
linux-image-raspi-nolpae 5.15.0.1093.91
linux-image-virtual 5.15.0.168.159
linux-image-virtual-5.15 5.15.0.168.159
Ubuntu 20.04 LTS
linux-image-5.15.0-1051-nvidia-tegra 5.15.0-1051.51~20.04.1
Available with Ubuntu Pro
linux-image-5.15.0-1051-nvidia-tegra-rt 5.15.0-1051.51~20.04.1
Available with Ubuntu Pro
linux-image-5.15.0-1093-ibm 5.15.0-1093.96~20.04.1
Available with Ubuntu Pro
linux-image-5.15.0-1094-intel-iotg 5.15.0-1094.100~20.04.1
Available with Ubuntu Pro
linux-image-5.15.0-1103-azure 5.15.0-1103.112~20.04.1
Available with Ubuntu Pro
linux-image-5.15.0-168-generic 5.15.0-168.178~20.04.1
Available with Ubuntu Pro
linux-image-5.15.0-168-generic-64k 5.15.0-168.178~20.04.1
Available with Ubuntu Pro
linux-image-5.15.0-168-generic-lpae 5.15.0-168.178~20.04.1
Available with Ubuntu Pro
linux-image-5.15.0-168-lowlatency 5.15.0-168.178~20.04.1
Available with Ubuntu Pro
linux-image-5.15.0-168-lowlatency-64k 5.15.0-168.178~20.04.1
Available with Ubuntu Pro
linux-image-azure 5.15.0.1103.112~20.04.1
Available with Ubuntu Pro
linux-image-azure-5.15 5.15.0.1103.112~20.04.1
Available with Ubuntu Pro
linux-image-azure-cvm 5.15.0.1103.112~20.04.1
Available with Ubuntu Pro
linux-image-generic-5.15 5.15.0.168.178~20.04.1
Available with Ubuntu Pro
linux-image-generic-64k-5.15 5.15.0.168.178~20.04.1
Available with Ubuntu Pro
linux-image-generic-64k-hwe-20.04 5.15.0.168.178~20.04.1
Available with Ubuntu Pro
linux-image-generic-hwe-20.04 5.15.0.168.178~20.04.1
Available with Ubuntu Pro
linux-image-generic-lpae-5.15 5.15.0.168.178~20.04.1
Available with Ubuntu Pro
linux-image-generic-lpae-hwe-20.04 5.15.0.168.178~20.04.1
Available with Ubuntu Pro
linux-image-ibm 5.15.0.1093.96~20.04.1
Available with Ubuntu Pro
linux-image-ibm-5.15 5.15.0.1093.96~20.04.1
Available with Ubuntu Pro
linux-image-intel 5.15.0.1094.100~20.04.1
Available with Ubuntu Pro
linux-image-intel-iotg 5.15.0.1094.100~20.04.1
Available with Ubuntu Pro
linux-image-intel-iotg-5.15 5.15.0.1094.100~20.04.1
Available with Ubuntu Pro
linux-image-lowlatency-5.15 5.15.0.168.178~20.04.1
Available with Ubuntu Pro
linux-image-lowlatency-64k-5.15 5.15.0.168.178~20.04.1
Available with Ubuntu Pro
linux-image-lowlatency-64k-hwe-20.04 5.15.0.168.178~20.04.1
Available with Ubuntu Pro
linux-image-lowlatency-hwe-20.04 5.15.0.168.178~20.04.1
Available with Ubuntu Pro
linux-image-nvidia-tegra 5.15.0.1051.51~20.04.1
Available with Ubuntu Pro
linux-image-nvidia-tegra-5.15 5.15.0.1051.51~20.04.1
Available with Ubuntu Pro
linux-image-nvidia-tegra-rt 5.15.0.1051.51~20.04.1
Available with Ubuntu Pro
linux-image-nvidia-tegra-rt-5.15 5.15.0.1051.51~20.04.1
Available with Ubuntu Pro
linux-image-oem-20.04 5.15.0.168.178~20.04.1
Available with Ubuntu Pro
linux-image-oem-20.04b 5.15.0.168.178~20.04.1
Available with Ubuntu Pro
linux-image-oem-20.04c 5.15.0.168.178~20.04.1
Available with Ubuntu Pro
linux-image-oem-20.04d 5.15.0.168.178~20.04.1
Available with Ubuntu Pro
linux-image-virtual-5.15 5.15.0.168.178~20.04.1
Available with Ubuntu Pro
linux-image-virtual-hwe-20.04 5.15.0.168.178~20.04.1
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-8013-1
CVE-2025-38561, CVE-2025-40019
Package Information:
https://launchpad.net/ubuntu/+source/linux/5.15.0-168.178
https://launchpad.net/ubuntu/+source/linux-aws/5.15.0-1099.106
https://launchpad.net/ubuntu/+source/linux-azure/5.15.0-1103.112
https://launchpad.net/ubuntu/+source/linux-gcp/5.15.0-1099.108
https://launchpad.net/ubuntu/+source/linux-gke/5.15.0-1095.101
https://launchpad.net/ubuntu/+source/linux-gkeop/5.15.0-1082.90
https://launchpad.net/ubuntu/+source/linux-ibm/5.15.0-1093.96
https://launchpad.net/ubuntu/+source/linux-intel-iotg/5.15.0-1094.100
https://launchpad.net/ubuntu/+source/linux-kvm/5.15.0-1091.96
https://launchpad.net/ubuntu/+source/linux-lowlatency/5.15.0-168.178
https://launchpad.net/ubuntu/+source/linux-nvidia/5.15.0-1094.95
https://launchpad.net/ubuntu/+source/linux-nvidia-tegra/5.15.0-1051.51
https://launchpad.net/ubuntu/+source/linux-oracle/5.15.0-1096.102
https://launchpad.net/ubuntu/+source/linux-raspi/5.15.0-1093.96
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