GHSA-98QM-WVGF-W4CF MongoDB Python Driver: Out-of-bounds read in BSON decoding via a malformed Regex element

Impact The C extension's BSON decoder scans a Regex element's pattern and flags strings with strlen before checking the document's remaining length, so a crafted truncated Regex element can read past the end of the caller's buffer. bson.decode and bson.decodeall accept mmap and array buffers, whi...