RUSTSEC-2026-0401 Out-of-bounds read in `train_from_buffer` when sample sizes overflow

ZDICTtrainFromBuffer is never told the length of the samples buffer, so trainfrombuffer checked that the sample sizes add up to it. With overflow checks off, as in release builds, that sum wrapped around: sizes totalling 2^64 plus the buffer length passed the check, and the trainer read past the...

Out-of-bounds read in `train_from_buffer` when sample sizes overflow

ZDICTtrainFromBuffer is never told the length of the samples buffer, so trainfrombuffer checked that the sample sizes add up to it. With overflow checks off, as in release builds, that sum wrapped around: sizes totalling 2^64 plus the buffer length passed the check, and the trainer read past the...