Ubuntu Security Notices USN-8013-1 USN-8013-1: Linux kernel vulnerabilities Publication date 4 February 2026 Overview Several security issues were fixed in the Linux kernel. Releases 22.04 LTS 20.04 LTS Packages linux - Linux kernel linux-aws - Linux kernel for Amazon Web Services (AWS) systems linux-azure - Linux kernel for Microsoft Azure Cloud systems linux-azure-5.15 - 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-hwe-5.15 - Linux hardware enablement (HWE) kernel linux-ibm - Linux kernel for IBM cloud systems linux-ibm-5.15 - Linux kernel for IBM cloud systems linux-intel-iotg - Linux kernel for Intel IoT platforms linux-intel-iotg-5.15 - Linux kernel for Intel IoT platforms linux-kvm - Linux kernel for cloud environments linux-lowlatency - Linux low latency kernel linux-lowlatency-hwe-5.15 - Linux low latency kernel linux-nvidia - Linux kernel for NVIDIA systems linux-nvidia-tegra - Linux kernel for NVIDIA Tegra systems linux-nvidia-tegra-5.15 - Linux kernel for NVIDIA Tegra systems linux-oracle - Linux kernel for Oracle Cloud systems linux-raspi - Linux kernel for Raspberry Pi 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 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 Update instructions After a standard system update you need to reboot your computer to make all the necessary changes. Learn more about how to get the fixes. 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. The problem can be corrected by updating your system to the following package versions: Ubuntu Release Package Version 22.04 LTS jammy 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 20.04 LTS focal linux-image-5.15.0-1051-nvidia-tegra – 5.15.0-1051.51~20.04.1 linux-image-5.15.0-1051-nvidia-tegra-rt – 5.15.0-1051.51~20.04.1 linux-image-5.15.0-1093-ibm – 5.15.0-1093.96~20.04.1 linux-image-5.15.0-1094-intel-iotg – 5.15.0-1094.100~20.04.1 linux-image-5.15.0-1103-azure – 5.15.0-1103.112~20.04.1 linux-image-5.15.0-168-generic – 5.15.0-168.178~20.04.1 linux-image-5.15.0-168-generic-64k – 5.15.0-168.178~20.04.1 linux-image-5.15.0-168-generic-lpae – 5.15.0-168.178~20.04.1 linux-image-5.15.0-168-lowlatency – 5.15.0-168.178~20.04.1 linux-image-5.15.0-168-lowlatency-64k – 5.15.0-168.178~20.04.1 linux-image-azure – 5.15.0.1103.112~20.04.1 linux-image-azure-5.15 – 5.15.0.1103.112~20.04.1 linux-image-azure-cvm – 5.15.0.1103.112~20.04.1 linux-image-generic-5.15 – 5.15.0.168.178~20.04.1 linux-image-generic-64k-5.15 – 5.15.0.168.178~20.04.1 linux-image-generic-64k-hwe-20.04 – 5.15.0.168.178~20.04.1 linux-image-generic-hwe-20.04 – 5.15.0.168.178~20.04.1 linux-image-generic-lpae-5.15 – 5.15.0.168.178~20.04.1 linux-image-generic-lpae-hwe-20.04 – 5.15.0.168.178~20.04.1 linux-image-ibm – 5.15.0.1093.96~20.04.1 linux-image-ibm-5.15 – 5.15.0.1093.96~20.04.1 linux-image-intel – 5.15.0.1094.100~20.04.1 linux-image-intel-iotg – 5.15.0.1094.100~20.04.1 linux-image-intel-iotg-5.15 – 5.15.0.1094.100~20.04.1 linux-image-lowlatency-5.15 – 5.15.0.168.178~20.04.1 linux-image-lowlatency-64k-5.15 – 5.15.0.168.178~20.04.1 linux-image-lowlatency-64k-hwe-20.04 – 5.15.0.168.178~20.04.1 linux-image-lowlatency-hwe-20.04 – 5.15.0.168.178~20.04.1 linux-image-nvidia-tegra – 5.15.0.1051.51~20.04.1 linux-image-nvidia-tegra-5.15 – 5.15.0.1051.51~20.04.1 linux-image-nvidia-tegra-rt – 5.15.0.1051.51~20.04.1 linux-image-nvidia-tegra-rt-5.15 – 5.15.0.1051.51~20.04.1 linux-image-oem-20.04 – 5.15.0.168.178~20.04.1 linux-image-oem-20.04b – 5.15.0.168.178~20.04.1 linux-image-oem-20.04c – 5.15.0.168.178~20.04.1 linux-image-oem-20.04d – 5.15.0.168.178~20.04.1 linux-image-virtual-5.15 – 5.15.0.168.178~20.04.1 linux-image-virtual-hwe-20.04 – 5.15.0.168.178~20.04.1 Reduce your security exposure Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines. Get Ubuntu Pro References CVE-2025-40019 CVE-2025-38561 CVE-2025-40019 CVE-2025-38561 USN-8015-1 USN-8014-1 USN-7990-1 USN-7990-2 USN-7934-1 USN-7880-1 USN-7879-1 USN-7879-2 USN-7879-3 USN-7879-4 USN-8015-1 USN-8014-1 USN-7990-1 USN-7990-2 USN-7934-1 USN-7880-1 USN-7879-1 USN-7879-2 USN-7879-3 USN-7879-4 Have additional questions? Talk to a member of the team ›