Unverified50% confidenceFactExact time
Unix domain sockets support passing file descriptors (fd passing) via sendmsg/recvmsg.
1
Sources
50%
Confidence
Long-term
Relevance
8/6/2026
First Seen
Sources
Related Claims
UnverifiedIn the Linux kernel, each network socket is represented as a file descriptor; when a process forks a child process, the child inherits the parent's file descriptor table via a reference-counting mechanism, causing port leaks to survive across processes.60% similarUnverifiedAs long as any process holds a reference to a socket file descriptor, the corresponding socket will not be reclaimed by the kernel—this is the underlying mechanism by which port leaks can survive across processes.54% similarUnverified由于文件描述符传递，AF_UNIX 套接字之间可能构成循环引用，普通引用计数无法回收，因此 Linux 内核为 AF_UNIX 专门实现了垃圾回收器53% similarUnverifiedstack-UAF 类 Linux 漏洞通常可导致权限提升、任意代码执行和拒绝服务50% similar
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