The shmctl function in Linux 2.6.9 and earlier allows local users to unlock the memory of other processes, which could cause sensitive memory to be swapped to disk, which could allow it to be read by other users once it has been released.
来源：NVD
linux 是款开放源代码的类unix操作系统。 Linux 2.6.9及更早版本中的shmctl函数可让本地用户取消锁定其他进程的内存，这会导致敏感内存交换到磁盘上，一旦将其释放，其他用户就可以读取到敏感信息。