Friday, May 22, 2026

[USN-8291-2] Linux kernel (Low Latency) vulnerabilities

========================================================================== Ubuntu Security Notice USN-8291-2 May 22, 2026 linux-lowlatency-hwe-5.15 vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 20.04 LTS Summary: Several security issues were fixed in the Linux kernel. Software Description: - linux-lowlatency-hwe-5.15: Linux low latency kernel 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: - SMB network file system; - Netfilter; - io_uring subsystem; (CVE-2024-35862, CVE-2024-50060, CVE-2026-23274, CVE-2026-23351) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 20.04 LTS linux-image-5.15.0-178-lowlatency 5.15.0-178.188~20.04.1 Available with Ubuntu Pro linux-image-5.15.0-178-lowlatency-64k 5.15.0-178.188~20.04.1 Available with Ubuntu Pro linux-image-lowlatency-5.15 5.15.0.178.188~20.04.1 Available with Ubuntu Pro linux-image-lowlatency-64k-5.15 5.15.0.178.188~20.04.1 Available with Ubuntu Pro linux-image-lowlatency-64k-hwe-20.04 5.15.0.178.188~20.04.1 Available with Ubuntu Pro linux-image-lowlatency-hwe-20.04 5.15.0.178.188~20.04.1 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-8291-2 https://ubuntu.com/security/notices/USN-8291-1 CVE-2024-35862, CVE-2024-50060, CVE-2026-23274, CVE-2026-23351

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