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In systemd prior to 234 a race condition exists between .mount and .automount units such that automount requests from kernel may not be serviced by systemd resulting in kernel holding the mountpoint and any processes that try to use said mount will hang. A race condition like this may lead to denial of service, until mount points are unmounted.

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使用共享资源的并发执行不恰当同步问题(竞争条件)

systemd 竞争条件问题漏洞

systemd是德国Lennart Poettering软件开发者的一款基于Linux的系统和服务管理器。该产品兼容了SysV和LSB的启动脚本，且提供了一个用来表示系统服务间依赖关系的框架。 systemd 234之前版本中存在竞争条件问题漏洞，该漏洞源于程序无法处理自动挂载请求。攻击者可利用该漏洞造成拒绝服务（进程挂起）。

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