Ubuntu has released USN-8200-2 to address multiple vulnerabilities in its FIPS-certified Linux kernels for Ubuntu 20.04 LTS, including a high-severity flaw (CVE-2026-23074, CVSS 7.8) and a medium-severity flaw (CVE-2026-23060, CVSS 5.5). The vulnerabilities affect multiple subsystems, including the ARM64 architecture, Cryptographic API, GPU drivers, I2C, and network traffic control, and could allow an attacker to compromise the system. A 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-8200-2 USN-8200-2: Linux kernel (FIPS) vulnerabilities Publication date 22 April 2026 Overview Several security issues were fixed in the Linux kernel. Releases 20.04 LTS Open side navigation Close side navigation Packages Details Update instructions References Related notices Packages linux-aws-fips - Linux kernel for Amazon Web Services (AWS) systems with FIPS linux-azure-fips - Linux kernel for Microsoft Azure Cloud systems with FIPS linux-fips - Linux kernel with FIPS 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: 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-5.4.0-1131-fips – 5.4.0-1131.141 FIPS Updates FIPS-140 certified package with security fixes. Available with Ubuntu Pro. linux-image-5.4.0-1157-aws-fips – 5.4.0-1157.167+fips1 FIPS Updates FIPS-140 certified package with security fixes. Available with Ubuntu Pro. linux-image-5.4.0-1160-gcp-fips – 5.4.0-1160.169+fips1 FIPS Updates FIPS-140 certified package with security fixes. Available with Ubuntu Pro. linux-image-5.4.0-1161-azure-fips – 5.4.0-1161.167+fips1 FIPS Updates FIPS-140 certified package with security fixes. Available with Ubuntu Pro. linux-image-aws-fips – 5.4.0.1157.104 FIPS Updates FIPS-140 certified package with security fixes. Available with Ubuntu Pro. linux-image-aws-fips-5.4 – 5.4.0.1157.104 FIPS Updates FIPS-140 certified package with security fixes. Available with Ubuntu Pro. linux-image-azure-fips – 5.4.0.1161.97 FIPS Updates FIPS-140 certified package with security fixes. Available with Ubuntu Pro. linux-image-azure-fips-5.4 – 5.4.0.1161.97 FIPS Updates FIPS-140 certified package with security fixes. Available with Ubuntu Pro. linux-image-fips – 5.4.0.1131.128 FIPS Updates FIPS-140 certified package with security fixes. Available with Ubuntu Pro. linux-image-fips-5.4 – 5.4.0.1131.128 FIPS Updates FIPS-140 certified package with security fixes. Available with Ubuntu Pro. linux-image-gcp-fips – 5.4.0.1160.102 FIPS Updates FIPS-140 certified package with security fixes. Available with Ubuntu Pro. linux-image-gcp-fips-5.4 – 5.4.0.1160.102 FIPS Updates FIPS-140 certified package with security fixes. Available with Ubuntu Pro. 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-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-8200-1 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-8200-1 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? Talk to a member of the team ›