CVE-2026-46290

A flaw was found in the Linux kernel's x86/efi component. Due to changes in FPU softirq handling, the system incorrectly identifies normal task context as an interrupt context. This issue, when combined with buggy firmware that triggers page faults during EFI (Extensible Firmware Interface) runtime calls, can lead to an unrecoverable system hang, resulting in a Denial of Service (DoS).