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Ubuntu 22.04 LTS: USN-7726-5 Linux Kernel Critical Issues Detected

Several security issues were fixed in the Linux kernel.. ========================================================================== Ubuntu Security Notice USN-7726-5 September 18, 2025 linux-azure, linux-azure-5.15, linux-azure-fips 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-azure: Linux kernel for Microsoft Azure Cloud systems - linux-azure-fips: Linux kernel for Microsoft Azure Cloud systems with FIPS - linux-azure-5.15: 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: - NTFS3 file system; - Network traffic control; (CVE-2024-27407, CVE-2024-57996, CVE-2025-37752, CVE-2025-38350) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 22.04 LTS linux-image-5.15.0-1095-azure 5.15.0-1095.104 linux-image-5.15.0-1095-azure-fips 5.15.0-1095.104+fips1 Available with Ubuntu Pro linux-image-azure-5.15 5.15.0.1095.93 linux-image-azure-fips 5.15.0.1095.80 Available with Ubuntu Pro linux-image-azure-fips-5.15 5.15.0.1095.80 Available with Ubuntu Pro linux-image-azure-lts-22.04 5.15.0.1095.93 Ubuntu 20.04 LTS linux-image-5.15.0-1095-azure 5.15.0-1095.104~20.04.1 Available with Ubuntu Pro linux-image-azure 5.15.0.1095.104~20.04.1 Available with Ubuntu Pro linux-image-azure-5.15 5.15.0.1095.104~20.04.1 Available with Ubuntu Pro linux-image-azure-cvm 5.15.0.1095.104~20.04.1 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-7726-5 https://ubuntu.com/security/notices/USN-7726-4 https://ubuntu.com/security/notices/USN-7726-3 https://ubuntu.com/security/notices/USN-7726-2 https://ubuntu.com/security/notices/USN-7726-1 CVE-2024-27407, CVE-2024-57996, CVE-2025-37752, CVE-2025-38350 Package Information: https://launchpad.net/ubuntu/+source/linux-azure/5.15.0-1095.104 . Ubuntu has issued essential updates addressing critical kernel vulnerabilities for Azure deployments in the USN-7726-5 advisory, ensuring enhanced security measures.. linux azure kernel, ubuntu security updates, kernel vulnerabilities. . Severity: Critical. LinuxSecurity.com Team

Sep 18, 2025 •Critical Ubuntu