Files
bitcoin/src/test/fuzz/util
Vasil Dimov 4d81b4de33 fuzz: FuzzedSock::Recv() don't lose bytes from MSG_PEEK read
Problem:

If `FuzzedSock::Recv(N, MSG_PEEK)` is called then `N` bytes would be
retrieved from the fuzz provider, saved in `m_peek_data` and returned
to the caller (ok).

If after this `FuzzedSock::Recv(M, 0)` is called where `M < N`
then the first `M` bytes from `m_peek_data` would be returned
to the caller (ok), but the remaining `N - M` bytes in `m_peek_data`
would be discarded/lost (not ok). They must be returned by a subsequent
`Recv()`.

To resolve this, only remove the head `N` bytes from `m_peek_data`.
2024-06-14 14:56:17 +02:00
..
2024-06-14 14:44:26 +02:00