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Kernel: Stop treating port 0 (ephemeral auto bind) as a privileged port

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Binding to port 0 is used to signal to listen() to bind to any port
that is available. (in serenity's case, to the port range of 32768 to
60999, which are not privileged ports)
This commit is contained in:
Idan Horowitz
2021-04-20 00:12:56 +03:00
committed by Andreas Kling
parent 152c54a00a
commit dbc13e1ea2
1 changed files with 1 additions and 1 deletions
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2
Kernel/Net/IPv4Socket.cpp
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@@ -112,7 +112,7 @@ KResult IPv4Socket::bind(Userspace<const sockaddr*> user_address, socklen_t addr
auto requested_local_port = ntohs(address.sin_port);
if (!Process::current()->is_superuser()) {
if (requested_local_port < 1024) {
if (requested_local_port > 0 && requested_local_port < 1024) {
dbgln("UID {} attempted to bind {} to port {}", Process::current()->uid(), class_name(), requested_local_port);
return EACCES;
}