CVE-2026-43326

A flaw was found in the Linux kernel, specifically within the sched_ext component. This vulnerability can lead to a system-wide deadlock, causing a Denial of Service (DoS) where the system becomes unresponsive. The issue arises when the kernel's scheduling mechanism enters a busy-wait state in a critical section, preventing processors from performing other tasks. If multiple processors become stuck in this waiting loop, the entire system can freeze.