This security notice addresses multiple Linux kernel vulnerabilities affecting subsystems including the ARM64 architecture, Cryptographic API, GPU drivers, I2C, and network traffic control, which could allow an attacker to compromise the system. Specific CVEs include CVE-2026-23074 (CVSS 7.8 HIGH), CVE-2026-23060 (CVSS 5.5 MEDIUM), and CVE-2025-37849 (CVSS 7.8 HIGH). Affected kernel versions are extensive, for example CVE-2026-23074 affects versions from 2.6.12.1 through 5.10.248, 5.11 through 5.15.198, 5.16 through 6.1.161, 6.2 through 6.6.121, and 6.7 through 6.12.67, with fixes available in kernel versions 5.10.249, 5.15.199, 6.1.162, 6.6.122, 6.12.68, and 6.18.8. A standard system update and reboot are required, and due to an ABI change, third-party kernel modules must be recompiled and reinstalled.
Ubuntu Security Notices USN-8200-1 USN-8200-1: Linux kernel vulnerabilities Publication date 22 April 2026 Overview Several security issues were fixed in the Linux kernel. Releases 20.04 LTS 18.04 LTS Open side navigation Close side navigation Packages Details Update instructions References Related notices Packages linux - Linux kernel linux-aws - Linux kernel for Amazon Web Services (AWS) systems linux-aws-5.4 - 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-gcp-5.4 - Linux kernel for Google Cloud Platform (GCP) systems linux-hwe-5.4 - Linux hardware enablement (HWE) kernel linux-ibm - Linux kernel for IBM cloud systems linux-ibm-5.4 - Linux kernel for IBM cloud systems linux-iot - Linux kernel for IoT platforms linux-kvm - Linux kernel for cloud environments linux-oracle - Linux kernel for Oracle Cloud systems linux-oracle-5.4 - Linux kernel for Oracle Cloud systems linux-xilinx-zynqmp - Linux kernel for Xilinx ZynqMP processors 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: ARM64 architecture; Cryptographic API; GPU drivers; I2C subsystem; Network traffic control 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: ARM64 architecture; Cryptographic API; GPU drivers; I2C subsystem; Network traffic control 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 20.04 LTS focal linux-image-5.4.0-1061-iot – 5.4.0-1061.64 Ubuntu Pro Fix available with Ubuntu Pro . linux-image-5.4.0-1075-xilinx-zynqmp – 5.4.0-1075.79 Ubuntu Pro Fix available with Ubuntu Pro . linux-image-5.4.0-1103-ibm – 5.4.0-1103.108 Ubuntu Pro Fix available with Ubuntu Pro . linux-image-5.4.0-1144-kvm – 5.4.0-1144.153 Ubuntu Pro Fix available with Ubuntu Pro . linux-image-5.4.0-1155-oracle – 5.4.0-1155.165 Ubuntu Pro Fix available with Ubuntu Pro . linux-image-5.4.0-1157-aws – 5.4.0-1157.167 Ubuntu Pro Fix available with Ubuntu Pro . linux-image-5.4.0-1160-gcp – 5.4.0-1160.169 Ubuntu Pro Fix available with Ubuntu Pro . linux-image-5.4.0-1161-azure – 5.4.0-1161.167 Ubuntu Pro Fix available with Ubuntu Pro . linux-image-5.4.0-228-generic – 5.4.0-228.248 Ubuntu Pro Fix available with Ubuntu Pro . linux-image-5.4.0-228-generic-lpae – 5.4.0-228.248 Ubuntu Pro Fix available with Ubuntu Pro . linux-image-5.4.0-228-lowlatency – 5.4.0-228.248 Ubuntu Pro Fix available with Ubuntu Pro . linux-image-aws-5.4 – 5.4.0.1157.154 Ubuntu Pro Fix available with Ubuntu Pro . linux-image-aws-lts-20.04 – 5.4.0.1157.154 Ubuntu Pro Fix available with Ubuntu Pro . linux-image-azure-5.4 – 5.4.0.1161.153 Ubuntu Pro Fix available with Ubuntu Pro . linux-image-azure-lts-20.04 – 5.4.0.1161.153 Ubuntu Pro Fix available with Ubuntu Pro . linux-image-gcp-5.4 – 5.4.0.1160.162 Ubuntu Pro Fix available with Ubuntu Pro . linux-image-gcp-lts-20.04 – 5.4.0.1160.162 Ubuntu Pro Fix available with Ubuntu Pro . linux-image-generic – 5.4.0.228.220 Ubuntu Pro Fix available with Ubuntu Pro . linux-image-generic-5.4 – 5.4.0.228.220 Ubuntu Pro Fix available with Ubuntu Pro . linux-image-generic-hwe-18.04 – 5.4.0.228.220 Ubuntu Pro Fix available with Ubuntu Pro . linux-image-generic-lpae – 5.4.0.228.220 Ubuntu Pro Fix available with Ubuntu Pro . linux-image-generic-lpae-5.4 – 5.4.0.228.220 Ubuntu Pro Fix available with Ubuntu Pro . linux-image-generic-lpae-hwe-18.04 – 5.4.0.228.220 Ubuntu Pro Fix available with Ubuntu Pro . linux-image-ibm-5.4 – 5.4.0.1103.132 Ubuntu Pro Fix available with Ubuntu Pro . linux-image-ibm-lts-20.04 – 5.4.0.1103.132 Ubuntu Pro Fix available with Ubuntu Pro . linux-image-kvm – 5.4.0.1144.140 Ubuntu Pro Fix available with Ubuntu Pro . linux-image-kvm-5.4 – 5.4.0.1144.140 Ubuntu Pro Fix available with Ubuntu Pro . linux-image-lowlatency – 5.4.0.228.220 Ubuntu Pro Fix available with Ubuntu Pro . linux-image-lowlatency-5.4 – 5.4.0.228.220 Ubuntu Pro Fix available with Ubuntu Pro . linux-image-lowlatency-hwe-18.04 – 5.4.0.228.220 Ubuntu Pro Fix available with Ubuntu Pro . linux-image-oem – 5.4.0.228.220 Ubuntu Pro Fix available with Ubuntu Pro . linux-image-oem-osp1 – 5.4.0.228.220 Ubuntu Pro Fix available with Ubuntu Pro . linux-image-oracle-5.4 – 5.4.0.1155.149 Ubuntu Pro Fix available with Ubuntu Pro . linux-image-oracle-lts-20.04 – 5.4.0.1155.149 Ubuntu Pro Fix available with Ubuntu Pro . linux-image-virtual – 5.4.0.228.220 Ubuntu Pro Fix available with Ubuntu Pro . linux-image-virtual-5.4 – 5.4.0.228.220 Ubuntu Pro Fix available with Ubuntu Pro . linux-image-virtual-hwe-18.04 – 5.4.0.228.220 Ubuntu Pro Fix available with Ubuntu Pro . linux-image-xilinx-zynqmp – 5.4.0.1075.75 Ubuntu Pro Fix available with Ubuntu Pro . linux-image-xilinx-zynqmp-5.4 – 5.4.0.1075.75 Ubuntu Pro Fix available with Ubuntu Pro . 18.04 LTS bionic linux-image-5.4.0-1103-ibm – 5.4.0-1103.108~18.04.1 Ubuntu Pro Fix available with Ubuntu Pro . linux-image-5.4.0-1155-oracle – 5.4.0-1155.165~18.04.1 Ubuntu Pro Fix available with Ubuntu Pro . linux-image-5.4.0-1157-aws – 5.4.0-1157.167~18.04.1 Ubuntu Pro Fix available with Ubuntu Pro . linux-image-5.4.0-1160-gcp – 5.4.0-1160.169~18.04.1 Ubuntu Pro Fix available with Ubuntu Pro . linux-image-5.4.0-228-generic – 5.4.0-228.248~18.04.1 Ubuntu Pro Fix available with Ubuntu Pro . linux-image-5.4.0-228-lowlatency – 5.4.0-228.248~18.04.1 Ubuntu Pro Fix available with Ubuntu Pro . linux-image-aws – 5.4.0.1157.167~18.04.1 Ubuntu Pro Fix available with Ubuntu Pro . linux-image-aws-5.4 – 5.4.0.1157.167~18.04.1 Ubuntu Pro Fix available with Ubuntu Pro . linux-image-gcp – 5.4.0.1160.169~18.04.1 Ubuntu Pro Fix available with Ubuntu Pro . linux-image-gcp-5.4 – 5.4.0.1160.169~18.04.1 Ubuntu Pro Fix available with Ubuntu Pro . linux-image-generic-5.4 – 5.4.0.228.248~18.04.1 Ubuntu Pro Fix available with Ubuntu Pro . linux-image-generic-hwe-18.04 – 5.4.0.228.248~18.04.1 Ubuntu Pro Fix available with Ubuntu Pro . linux-image-ibm – 5.4.0.1103.108~18.04.1 Ubuntu Pro Fix available with Ubuntu Pro . linux-image-ibm-5.4 – 5.4.0.1103.108~18.04.1 Ubuntu Pro Fix available with Ubuntu Pro . linux-image-lowlatency-5.4 – 5.4.0.228.248~18.04.1 Ubuntu Pro Fix available with Ubuntu Pro . linux-image-lowlatency-hwe-18.04 – 5.4.0.228.248~18.04.1 Ubuntu Pro Fix available with Ubuntu Pro . linux-image-oem – 5.4.0.228.248~18.04.1 Ubuntu Pro Fix available with Ubuntu Pro . linux-image-oem-osp1 – 5.4.0.228.248~18.04.1 Ubuntu Pro Fix available with Ubuntu Pro . linux-image-oracle – 5.4.0.1155.165~18.04.1 Ubuntu Pro Fix available with Ubuntu Pro . linux-image-oracle-5.4 – 5.4.0.1155.165~18.04.1 Ubuntu Pro Fix available with Ubuntu Pro . linux-image-snapdragon-5.4 – 5.4.0.228.248~18.04.1 Ubuntu Pro Fix available with Ubuntu Pro . linux-image-snapdragon-hwe-18.04 – 5.4.0.228.248~18.04.1 Ubuntu Pro Fix available with Ubuntu Pro . linux-image-virtual-5.4 – 5.4.0.228.248~18.04.1 Ubuntu Pro Fix available with Ubuntu Pro . linux-image-virtual-hwe-18.04 – 5.4.0.228.248~18.04.1 Ubuntu Pro Fix available with Ubuntu Pro . 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Get Ubuntu Pro References CVE-2026-23074 CVE-2026-23060 CVE-2025-37849 CVE-2024-46816 CVE-2022-49046 CVE-2026-23074 CVE-2026-23060 CVE-2025-37849 CVE-2024-46816 CVE-2022-49046 Related notices Search id="usn" Close Search USN-8201-1 USN-8200-2 USN-8188-1 USN-8165-1 USN-8164-1 USN-8163-1 USN-8163-2 USN-8162-1 USN-8159-1 USN-8159-2 USN-8201-1 USN-8200-2 USN-8188-1 USN-8165-1 USN-8164-1 USN-8163-1 USN-8163-2 USN-8162-1 USN-8159-1 USN-8159-2 USN-8159-3 USN-8152-1 USN-8149-1 USN-8149-2 USN-8149-3 USN-8148-1 USN-8148-2 USN-8148-3 USN-8148-4 USN-8148-5 USN-8148-6 USN-8148-7 USN-8145-1 USN-8145-2 USN-8145-3 USN-8145-4 USN-8145-5 USN-8143-1 USN-8143-2 USN-8142-1 USN-8126-1 USN-8074-1 USN-8074-2 USN-8052-1 USN-8052-2 USN-8031-1 USN-8031-2 USN-8031-3 USN-8028-1 USN-8028-2 USN-8028-3 USN-8028-4 USN-8028-5 USN-8028-6 USN-8028-7 USN-8028-8 USN-7712-1 USN-7712-2 USN-7711-1 USN-7686-1 USN-7655-1 USN-7654-1 USN-7654-2 USN-7654-3 USN-7654-4 USN-7654-5 USN-7594-1 USN-7594-2 USN-7594-3 USN-7196-1 USN-7156-1 USN-7155-1 USN-7154-1 USN-7154-2 Show 54 more references Show less references Have additional questions? 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