Apple Mac OSX Regex Engine (TRE) - Integer Signedness / Overflow

Source: https://code.google.com/p/google-security-research/issues/detail?id=429 The OS X regex engine function tretnfarunparallel contains the following code: int tbytes; ... if !matchtags numtags = 0; else numtags = tnfa-numtags; ... int rbytes, pbytes, totalbytes; char tmpbuf; / Compute the...