========================================================================== Ubuntu Security Notice USN-8145-5 April 15, 2026 linux-azure, linux-azure-4.15 vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 18.04 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 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; - UDF file system; - NFC subsystem; - Network traffic control; (CVE-2024-46777, CVE-2025-21735, CVE-2025-37849, CVE-2026-23060, CVE-2026-23074) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 18.04 LTS linux-image-4.15.0-1199-azure 4.15.0-1199.214 Available with Ubuntu Pro linux-image-azure-4.15 4.15.0.1199.167 Available with Ubuntu Pro linux-image-azure-lts-18.04 4.15.0.1199.167 Available with Ubuntu Pro Ubuntu 14.04 LTS linux-image-4.15.0-1199-azure 4.15.0-1199.214~14.04.1 Available with Ubuntu Pro linux-image-azure 4.15.0.1199.214~14.04.1 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-8145-5 https://ubuntu.com/security/notices/USN-8145-4 https://ubuntu.com/security/notices/USN-8145-3 https://ubuntu.com/security/notices/USN-8145-2 https://ubuntu.com/security/notices/USN-8145-1 CVE-2024-46777, CVE-2025-21735, CVE-2025-37849, CVE-2026-23060, CVE-2026-23074
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