CVE-2026-46029

A flaw was found in the Linux kernel. In uniprocessor (UP) kernel configurations, a race condition can occur within the slab memory allocator when kmalloc_nolock() is invoked from a Non-Maskable Interrupt (NMI) context. This allows the allocator to attempt to acquire a spinlock that is already held, leading to corruption of the slab's internal state. The most important consequence is a system crash, resulting in a denial of service.