该漏洞具体为,Linux内核的内存子系统在处理写入时复制(copy-on-write,COW)时产生了竞争条件(racecondition)。恶意用户可利用此漏洞,来获取高权限,对只读内存映射进行写访问。(AraceconditionwasfoundinthewaytheLinuxkernel’smemorysubsystemhandledthecopy-on-write(COW)breakageofprivateread-onlymemorymappings.) 竞争条件,指的是任务执行顺序异常,可导致应用崩溃,或令攻击者有机可乘,进一步执行