diff --git a/Kernel/Net/IPv4Socket.cpp b/Kernel/Net/IPv4Socket.cpp index 77077b79c0..6c66508784 100644 --- a/Kernel/Net/IPv4Socket.cpp +++ b/Kernel/Net/IPv4Socket.cpp @@ -82,8 +82,17 @@ KResult IPv4Socket::bind(const sockaddr* address, socklen_t address_size) return KResult(-EINVAL); auto& ia = *(const sockaddr_in*)address; + + auto requested_local_port = ntohs(ia.sin_port); + if (!current->process().is_superuser()) { + if (requested_local_port < 1024) { + dbg() << current->process() << " (uid " << current->process().uid() << ") attempted to bind " << class_name() << " to port " << requested_local_port; + return KResult(-EACCES); + } + } + m_local_address = IPv4Address((const u8*)&ia.sin_addr.s_addr); - m_local_port = ntohs(ia.sin_port); + m_local_port = requested_local_port; dbgprintf("IPv4Socket::bind %s{%p} to %s:%u\n", class_name(), this, m_local_address.to_string().characters(), m_local_port);