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Kernel: Use Userspace<T> for the recvfrom syscall, and Socket implementation
This fixes a bunch of unchecked kernel reads and writes, seems like they would might exploitable :). Write of sockaddr_in size to any address you please...
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9f9b05ba0f
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8e97de2df9
9 changed files with 43 additions and 30 deletions
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@ -59,7 +59,7 @@ public:
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virtual bool can_read(const FileDescription&, size_t) const override;
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virtual bool can_write(const FileDescription&, size_t) const override;
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virtual KResultOr<size_t> sendto(FileDescription&, const void*, size_t, int, Userspace<const sockaddr*>, socklen_t) override;
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virtual KResultOr<size_t> recvfrom(FileDescription&, void*, size_t, int flags, sockaddr*, socklen_t*) override;
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virtual KResultOr<size_t> recvfrom(FileDescription&, void*, size_t, int flags, Userspace<sockaddr*>, Userspace<socklen_t*>) override;
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virtual KResult setsockopt(int level, int option, Userspace<const void*>, socklen_t) override;
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virtual KResult getsockopt(FileDescription&, int level, int option, Userspace<void*>, Userspace<socklen_t*>) override;
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@ -110,8 +110,8 @@ protected:
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private:
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virtual bool is_ipv4() const override { return true; }
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KResultOr<size_t> receive_byte_buffered(FileDescription&, void* buffer, size_t buffer_length, int flags, sockaddr*, socklen_t*);
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KResultOr<size_t> receive_packet_buffered(FileDescription&, void* buffer, size_t buffer_length, int flags, sockaddr*, socklen_t*);
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KResultOr<size_t> receive_byte_buffered(FileDescription&, void* buffer, size_t buffer_length, int flags, Userspace<sockaddr*>, Userspace<socklen_t*>);
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KResultOr<size_t> receive_packet_buffered(FileDescription&, void* buffer, size_t buffer_length, int flags, Userspace<sockaddr*>, Userspace<socklen_t*>);
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IPv4Address m_local_address;
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IPv4Address m_peer_address;
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