[Bug 1481388] Re: NTP : Use-after-free in routing socket code after dropping root

[eric.desrochers]

The remove_ and delete_ functions remove the current element from the
asyncio_reader_list, and free it, respectively.

We then return back to the loop at the top, wherein the asyncio_reader variable still points at the now-freed element,
whose contents are now scrambled by having link pointers, etc, from internal malloc state overlaying the data.

This loop should probably extract the ->link pointer prior to calling
->receiver(), as that function can free the asyncio_reader object in
question. (LP: #1481388)

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Title:
  NTP : Use-after-free in routing socket code after dropping root

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