New submission from paul: # Program received signal SIGSEGV, Segmentation fault. # 0x40036740 in encoder_listencode_dict (s=0x405b43fc, acc=0xbf86438c, dct=<D at remote 0x405b2fb4>, indent_level=0) # at /home/p/Python-3.4.1/Modules/_json.c:1557 # 1557 PyList_SET_ITEM(items, i, item); # (gdb) print *(PyListObject*)items # $1 = {ob_base = {ob_base = {_ob_next = 0x405bcab4, _ob_prev = 0x40591184, ob_refcnt = 2, ob_type = 0x830e1c0 <PyList_Type>}, # ob_size = 0}, ob_item = 0x0, allocated = 0} # (gdb) print i # $2 = 112233 # # "items" was cleared in __hash__, so we get a wild write at a controlled address.
---------- files: poc_enc_dict3.py messages: 242311 nosy: pkt priority: normal severity: normal status: open title: Use after free during json encoding a dict (3) type: crash versions: Python 3.4 Added file: http://bugs.python.org/file39246/poc_enc_dict3.py _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue24096> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com