syscall: NetlinkRIB creates AF_NETLINK socket without SOCK_CLOEXEC #36053
Description
syscall.NetlinkRIB (which is used by net.InterfaceByName, etc.) creates an AF_NETLINK socket without setting SOCK_CLOEXEC. This means fork / exec will leak this socket to child processes.
LsfSocket and SetLsfPromisc are also affected by this, but are marked as deprecated.
What version of Go are you using (go version)?
$ go version go version go1.13.3 linux/amd64
Does this issue reproduce with the latest release?
Yes
What operating system and processor architecture are you using (go env)?
Linux