static int ramfs_nommu_mmap(struct file *file, struct vm_area_struct *vma)
{
	if (!(vma->vm_flags & VM_SHARED))
		return -ENOSYS;

	file_accessed(file);
	vma->vm_ops = &generic_file_vm_ops;
	return 0;
}

This category addresses vulnerabilities caused by flawed access control mechanisms, where incorrect permission settings allow unauthorized users to access restricted resources.