单选题
If an operating system permits shared resources such as memory to be used sequentially by multiple users/application or subjects without a refresh of the objects/memory area, what security problem is most likely to exist? 如果操作系统允许共享资源，内存顺序使用无刷新的对象/存储区由多个用户/应用程序或主题，什么是最可能存在的安全问题？（）
发布日期：2021-03-19
A
disclosure of residual data. 残余数据的披露
B
unauthorized obtaining of a privileged execution state. 取得未经授权的特权执行。
C
data leakage through covert channels. 通过秘密渠道的数据泄漏
D
denial of service through a deadly embrace. 拒绝服务攻击通过一个致命的死锁
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