[issue44396] pegen _PyParser_ASTFromFile(): Use-After-Free in syntaxerror()

2021-06-12 Thread alessandro mantovani
alessandro mantovani added the comment: Fuzzing experimental techniques, but then I observed the same behavior was happening with vanilla afl++. As a starting queue I used the *.py files that I found in the repo under ‘test’ or so Best Alessandro Mantovani Inviato da iPhone > Il gio

[issue44396] Use-After-Free

2021-06-11 Thread alessandro mantovani
New submission from alessandro mantovani : Use After Free in python3.11 (commit 2ab27c4af4ddf752) Steps to reproduce: 1) ./configure --with-address-sanitizer 2) make 3) ./python I attach some of the input that lead to the undefined behavior For the complete description you can find the