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Title: Out-of-bounds write in AST parser · Issue #104016 · python/cpython · GitHub

Open Graph Title: Out-of-bounds write in AST parser · Issue #104016 · python/cpython

X Title: Out-of-bounds write in AST parser · Issue #104016 · python/cpython

Description: Crash report Reported by OSS-Fuzz (issue 58510). Reproducer: import ast ast.parse(bytes([ 0x46, 0x22, 0x76, 0x76, 0x3a, 0x6f, 0x72, 0x3a, 0x2d, 0x7b, 0x22, 0x7b, 0x22, 0x46, 0x22, 0x76, 0x3a, 0x2d, 0x7b, 0x22, 0x7b, 0x22, 0x46, 0x22, 0x7...

Open Graph Description: Crash report Reported by OSS-Fuzz (issue 58510). Reproducer: import ast ast.parse(bytes([ 0x46, 0x22, 0x76, 0x76, 0x3a, 0x6f, 0x72, 0x3a, 0x2d, 0x7b, 0x22, 0x7b, 0x22, 0x46, 0x22, 0x76, 0x3a, 0x2d,...

X Description: Crash report Reported by OSS-Fuzz (issue 58510). Reproducer: import ast ast.parse(bytes([ 0x46, 0x22, 0x76, 0x76, 0x3a, 0x6f, 0x72, 0x3a, 0x2d, 0x7b, 0x22, 0x7b, 0x22, 0x46, 0x22, 0x76, 0x3a, 0x2d,...

Opengraph URL: https://github.com/python/cpython/issues/104016

X: @github

direct link

Domain: github.com

Hey, it has json ld scripts:

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Out-of-bounds write in AST parser","articleBody":"# Crash report\r\n\r\nReported by OSS-Fuzz (issue 58510).\r\n\r\nReproducer:\r\n\r\n```python\r\nimport ast\r\nast.parse(bytes([\r\n  0x46, 0x22, 0x76, 0x76, 0x3a, 0x6f, 0x72, 0x3a, 0x2d, 0x7b, 0x22, 0x7b,\r\n  0x22, 0x46, 0x22, 0x76, 0x3a, 0x2d, 0x7b, 0x22, 0x7b, 0x22, 0x46, 0x22,\r\n  0x77, 0x72, 0x3a, 0x2d, 0x7b, 0x22, 0x7b, 0x22, 0x46, 0x22, 0x76, 0x3a,\r\n  0x2d, 0x7b, 0x22, 0x7b, 0x22, 0x46, 0x22, 0x78, 0x3a, 0x77, 0x76, 0x3a,\r\n  0x3a, 0x20, 0x73, 0x2d, 0x7b, 0x22, 0x7b, 0x22, 0x46, 0x22, 0x76, 0x3a,\r\n  0x2e, 0x7b, 0x22, 0x7b, 0x22, 0x46, 0x22, 0x76, 0x3a, 0x2d, 0x7b, 0x22,\r\n  0x7b, 0x22, 0x46, 0x22, 0x76, 0x3a, 0x77, 0x76, 0x3a, 0x3a, 0x20, 0x73,\r\n  0x61, 0x77, 0x76, 0x3a, 0x3a, 0x20, 0x73, 0x2d, 0x7b, 0x22, 0x7b, 0x22,\r\n  0x46, 0x22, 0x76, 0x3a, 0x2e, 0x7b, 0x22, 0x7b, 0x22, 0x46, 0x22, 0x76,\r\n  0x3a, 0x2d, 0x7b, 0x22, 0x7b, 0x22, 0x46, 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0x76, 0x3a, 0x3a, 0x20, 0x73,\r\n  0x2d, 0x7b, 0x22, 0x7b, 0x22, 0x46, 0x22, 0x76, 0x3a, 0x2e, 0x7b, 0x22,\r\n  0x7b, 0x22, 0x46, 0x22, 0x76, 0x3a, 0x2d, 0x7b, 0x22, 0x7b, 0x22, 0x46,\r\n  0x22, 0x76, 0x3a, 0x77, 0x76, 0x3a, 0x3a, 0x20, 0x73, 0x61, 0x77, 0x76,\r\n  0x3a, 0x3a, 0x20, 0x73, 0x2d, 0x7b, 0x22, 0x7b, 0x22, 0x46, 0x22, 0x76,\r\n  0x3a, 0x2e, 0x7b, 0x22, 0x7b, 0x22, 0x46, 0x22, 0x76, 0x3a, 0x2d, 0x7b,\r\n  0x22, 0x7b, 0x22, 0x46, 0x22, 0x76, 0x3a, 0x77, 0x76, 0x3a, 0x3a, 0x20,\r\n  0x73, 0x61, 0x77, 0x76, 0x3a, 0x3a, 0x20, 0x73, 0x2d, 0x7b, 0x22, 0x7b,\r\n  0x22, 0x46, 0x22, 0x76, 0x3a, 0x2e, 0x7b, 0x22, 0x7b, 0x22, 0x46, 0x22,\r\n  0x76, 0x3a, 0x2d, 0x7b, 0x22, 0x7b, 0x22, 0x46, 0x22, 0x76, 0x3a, 0x77,\r\n  0x76, 0x3a, 0x3a, 0x20, 0x73, 0x61, 0x77, 0x76, 0x3a, 0x3a, 0x20, 0x73,\r\n  0x2d, 0x7b, 0x22, 0x7b, 0x22, 0x46, 0x22, 0x76, 0x3a, 0x2e, 0x7b, 0x22,\r\n  0x7b, 0x22, 0x46, 0x22, 0x76, 0x3a, 0x2d, 0x7b, 0x22, 0x7b, 0x22, 0x46,\r\n  0x22, 0x76, 0x3a, 0x77, 0x76, 0x3a, 0x3a, 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0x77, 0x76, 0x3a, 0x3a, 0x20,\r\n  0x73, 0x61, 0x77, 0x76, 0x3a, 0x3a, 0x20, 0x73, 0x2d, 0x7b, 0x22, 0x7b,\r\n  0x22, 0x46, 0x22, 0x76, 0x3a, 0x2e, 0x7b, 0x22, 0x7b, 0x22, 0x46, 0x22,\r\n  0x76, 0x3a, 0x2d, 0x7b, 0x22, 0x7b, 0x22, 0x46, 0x22, 0x76, 0x3a, 0x77,\r\n  0x76, 0x3a, 0x3a, 0x20, 0x73, 0x61, 0x77, 0x76, 0x3a, 0x3a, 0x20, 0x73,\r\n  0x3a, 0x2e, 0x7b, 0x22, 0x7b, 0x22, 0x46, 0x22, 0x76, 0x3a, 0x2d, 0x7b,\r\n  0x22, 0x7b, 0x22, 0x46, 0x22, 0x76, 0x3a, 0x77, 0x76, 0x3a, 0x3a, 0x20,\r\n  0x73, 0x61, 0x77, 0x76, 0x3a, 0x3a, 0x20, 0x73, 0x2d, 0x7b, 0x22, 0x7b,\r\n  0x22, 0x46, 0x22, 0x76, 0x3a, 0x2e, 0x7b, 0x22, 0x7b, 0x22, 0x46, 0x22,\r\n  0x76, 0x3a, 0x2d, 0x7b, 0x22, 0x7b, 0x22, 0x46, 0x22, 0x76, 0x3a, 0x77,\r\n  0x76, 0x3a, 0x3a, 0x20, 0x73, 0x61, 0x77, 0x76, 0x3a, 0x3a, 0x20, 0x73,\r\n  0x2d, 0x7b, 0x22, 0x7b, 0x22, 0x46, 0x22, 0x76, 0x3a, 0x2e, 0x7b, 0x22,\r\n  0x7b, 0x22, 0x46, 0x22, 0x76, 0x3a, 0x2d, 0x7b, 0x22, 0x7b, 0x22, 0x46,\r\n  0x22, 0x76, 0x3a, 0x77, 0x76, 0x3a, 0x3a, 0x20, 0x73, 0x61, 0x77, 0x76,\r\n  0x3a, 0x3a, 0x20, 0x73, 0x2d, 0x7b, 0x22, 0x7b, 0x22, 0x46, 0x22, 0x76,\r\n  0x3a, 0x2e, 0x7b, 0x22, 0x7b, 0x22, 0x46, 0x22, 0x76, 0x3a, 0x2d, 0x7b,\r\n  0x22, 0x7b, 0x22, 0x46, 0x22, 0x76, 0x3a, 0x77, 0x76, 0x3a, 0x3a, 0x20,\r\n  0x73, 0x61, 0x77, 0x76, 0x3a, 0x3a, 0x20, 0x73, 0x2d, 0x7b, 0x22, 0x7b,\r\n  0x22, 0x46, 0x22, 0x76, 0x3a, 0x2e, 0x7b, 0x22, 0x7b, 0x22, 0x46, 0x22,\r\n  0x76, 0x3a, 0x2d, 0x7b, 0x22, 0x7b, 0x22, 0x46, 0x22, 0x76, 0x3a, 0x77,\r\n  0x76, 0x3a, 0x3a, 0x20, 0x73, 0x61, 0x77, 0x76, 0x3a, 0x3a, 0x20, 0x73,\r\n  0x2d, 0x7b, 0x75, 0x74, 0x66, 0x22, 0x7b, 0x22, 0x46, 0x22, 0x76, 0x3a,\r\n  0x2e, 0x7b, 0x22, 0x7b, 0x22, 0x46, 0x22, 0x76, 0x3a, 0x2d, 0x7b, 0x22,\r\n  0x7b, 0x22, 0x46, 0x22, 0x76, 0x3a, 0x77, 0x76, 0x3a, 0x3a, 0x20, 0x73,\r\n  0x61, 0x77, 0x76, 0x3a, 0x3a, 0x20, 0x73, 0x2d, 0x7b, 0x22, 0x7b, 0x22,\r\n  0x46, 0x22, 0x76, 0x3a, 0x2e, 0x7b, 0x22, 0x7b, 0x22, 0x46, 0x22, 0x76,\r\n  0x3a, 0x2d, 0x7b, 0x22, 0x7b, 0x22, 0x46, 0x22, 0x76, 0x3a, 0x77, 0x76,\r\n  0x3a, 0x3a, 0x20, 0x74, 0x61, 0x77, 0x76, 0x3a, 0x3a, 0x20, 0x73, 0x2d,\r\n  0x7b, 0x22, 0x7b, 0x22, 0x46, 0x22, 0x76, 0x3a, 0x2e, 0x7b, 0x22, 0x7b,\r\n  0x22, 0x46, 0x22, 0x76, 0x3a, 0x2d, 0x7b, 0x22, 0x7b, 0x22, 0x46, 0x22,\r\n  0x76, 0x3a, 0x77, 0x76, 0x3a, 0x3a, 0x20, 0x73, 0x61, 0x2d, 0x7b, 0xa7,\r\n  0x61, 0x2d, 0xf3, 0xa0, 0x81, 0xb5, 0xf3, 0xa0, 0x81, 0x81, 0xb5, 0xf3,\r\n  0xa0, 0x81, 0x81, 0xb5, 0xf3, 0xa0, 0x81, 0x81, 0xb5, 0xf3, 0xa0, 0x81,\r\n  0x81, 0xb5, 0xf3, 0xa0, 0x81, 0x81, 0xb5, 0xf3, 0xa1, 0x81, 0x81, 0xb5,\r\n  0xf3, 0xa0, 0x81, 0x81, 0xb5, 0xf3, 0xa0, 0x81, 0x81, 0xb5, 0xf3, 0xa0,\r\n  0x81, 0x81, 0xb5, 0xf3, 0xa0, 0x81, 0x81, 0xb5, 0xf3, 0xa0, 0x81, 0x81,\r\n  0xb5, 0xf3, 0xa0, 0x81, 0x81, 0xb5, 0xf3, 0xa0, 0x81, 0x81, 0xb5, 0xf3,\r\n  0xa0, 0x81, 0x81, 0xb5, 0xf3, 0xa0, 0x81, 0x81, 0xb5, 0xf3, 0xa0, 0x81,\r\n  0x81, 0xb5, 0xf3, 0xa0, 0x81, 0x81, 0xb5, 0xf3, 0xa0, 0x81, 0x81, 0xb5,\r\n  0xf3, 0xa0, 0x81, 0x81, 0xb5, 0xf3, 0xa0, 0x81, 0x81, 0xb5, 0xf3, 0xa0,\r\n  0x81, 0x81, 0xb5, 0xf3, 0xa0, 0x81, 0x81, 0xb5, 0xf3, 0xa0, 0x81, 0x81,\r\n  0xb5, 0xf3, 0xa0, 0x81, 0x81, 0xb5, 0xf3, 0xa0, 0x81, 0x81, 0xb5, 0xf3,\r\n  0xa0, 0x81, 0x81, 0xb5, 0xf3, 0xa0, 0x81, 0x81, 0xb5, 0xf3, 0xa0, 0x81,\r\n  0x81, 0xb5, 0xf3, 0xa0, 0x81, 0x82, 0xb5, 0xf3, 0xa0, 0x81, 0x81, 0xb5,\r\n  0xf3, 0xa0, 0x81, 0x81, 0xb5, 0xf3, 0xa0, 0x81, 0x81, 0xb5, 0xf3, 0xa0,\r\n  0x81, 0x81, 0xb5, 0xf3, 0xa0, 0x81, 0x81, 0xb5, 0xf3, 0xa0, 0x81, 0x81,\r\n  0xb5, 0xf3, 0xa0, 0x81, 0x81, 0xb5, 0xf3, 0xa0, 0x81, 0x81, 0xb5, 0xf3,\r\n  0xa0, 0x81, 0x81, 0xb5, 0xf3, 0xa0, 0x81, 0x81, 0xb5, 0xf3, 0xa0, 0x81,\r\n  0x81, 0xb5, 0xf3, 0xa1, 0x81, 0x81, 0xb5, 0xf3, 0xa0, 0x81, 0x81, 0xb5,\r\n  0xf3, 0xa0, 0x81, 0x81, 0xb5, 0xf3, 0xa0, 0x81, 0x81, 0xb5, 0xf3, 0xa0,\r\n  0x81, 0x81, 0xb5, 0xf3, 0xa0, 0x81, 0x81, 0xb5, 0xf3, 0xa0, 0x81, 0x81,\r\n  0xb5, 0xf3, 0xa0, 0x81, 0x81, 0xb5, 0xf3, 0xa0, 0x81, 0x81, 0xb5, 0xf3,\r\n  0xa0, 0x81, 0x81, 0xb5, 0xf3, 0xa0, 0x81, 0x81, 0xb5, 0xf3, 0xa0, 0x81,\r\n  0x81, 0xb5, 0xf3, 0xa0, 0x81, 0x81, 0xb5, 0xf3, 0xa0, 0x81, 0x81, 0xb5,\r\n  0xf3, 0xa0, 0x81, 0x81, 0xb5, 0xf3, 0xa0, 0x81, 0x81, 0xb5, 0xf3, 0xa0,\r\n  0x81, 0x81, 0xb5, 0xf3, 0xa0, 0x81, 0x81, 0xb5, 0xf3, 0xa0, 0x81, 0x81,\r\n  0xb5, 0xf3, 0xa0, 0x81, 0x81, 0xb5, 0xf3, 0xa0, 0x81, 0x81, 0xb5, 0xf3,\r\n  0xa0, 0x81, 0x81, 0xb5, 0xf3, 0xa0, 0x81, 0x81, 0xb5, 0xf3, 0xa0, 0x81,\r\n  0x81, 0xb5, 0xf3, 0xa0, 0x81, 0x81, 0xb5, 0xf3, 0xa0, 0x81, 0x81, 0xb5,\r\n  0xf3, 0xa0, 0x81, 0x81, 0xb5, 0xf3, 0xa0, 0x81, 0x81, 0xb5, 0xf3, 0xa0,\r\n  0x81, 0x81, 0xb5, 0xf3, 0xa0, 0x81, 0x81, 0xb5, 0xf3, 0xa0, 0x81, 0x81,\r\n  0xb5, 0xf3, 0xa0, 0x81, 0x81, 0xb5, 0xf3, 0xa0, 0x81, 0x81, 0xb5, 0xf3,\r\n  0xa0, 0x81, 0x81, 0xb5, 0xf3, 0xa0, 0x81, 0x81, 0xb5, 0xf3, 0xa0, 0x81,\r\n  0x81, 0xb5, 0xf3, 0xa0, 0x81, 0x81, 0xb5, 0xf3, 0xa0, 0x81, 0x81, 0xb5,\r\n  0xf3, 0xa0, 0x81, 0x81, 0xb5, 0xf3, 0xa0, 0x81, 0x81, 0xb5, 0xf3, 0xa0,\r\n  0x81, 0x81, 0xb5, 0xf3, 0xa0, 0x81, 0x81, 0xb5, 0xf3, 0xa0, 0x81, 0x81,\r\n  0xb5, 0xf3, 0xa0, 0x81, 0x81, 0xb5, 0xf3, 0xa0, 0x81, 0x81, 0xb5, 0xf3,\r\n  0xa0, 0x81, 0x81, 0xb5, 0xf3, 0xa0, 0x81, 0x81, 0xb5, 0xf3, 0xa0, 0x81,\r\n  0x81, 0xb5, 0xf3, 0xa0, 0x81, 0x81, 0xb5, 0xf3, 0xa0, 0x81, 0x81, 0xb5,\r\n  0xf3, 0xa0, 0x81, 0x81, 0xb5, 0xf3, 0xa0, 0x81, 0x81, 0xb5, 0xf3, 0xa0,\r\n  0x81, 0x81, 0xb5, 0xf3, 0xa0, 0x81, 0xa7, 0x7b, 0x15, 0x7b, 0xc0, 0xad,\r\n  0x7b, 0x7b, 0xc0, 0xad, 0x7b, 0x22]))\r\n```\r\n\r\nRegression range: https://github.com/python/cpython/compare/ece20dba120a1a4745721c49f8d7389d4b1ee2a7...6be7aee18c5b8e639103df951d0d277f4b46f902\r\n\r\n# Error messages\r\n\r\nAddressSanitizer stack trace:\r\n\r\n```\r\n==2936==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x62a0000b91f4 at pc 0x000000c0a818 bp 0x7ffc21dc1e30 sp 0x7ffc21dc1e28\r\nWRITE of size 1 at 0x62a0000b91f4 thread T0\r\nSCARINESS: 31 (1-byte-write-heap-buffer-overflow)\r\n    #0 0xc0a817 in tok_get_normal_mode cpython/Parser/tokenizer.c:2240:41\r\n    #1 0xbf81d5 in tok_get cpython/Parser/tokenizer.c:2676:16\r\n    #2 0xbf81d5 in _PyTokenizer_Get cpython/Parser/tokenizer.c:2685:18\r\n    #3 0xb46ffa in _PyPegen_tokenize_full_source_to_check_for_errors cpython/Parser/pegen_errors.c:171:17\r\n    #4 0xb46c26 in _Pypegen_set_syntax_error cpython/Parser/pegen_errors.c:0\r\n    #5 0xb4313c in _PyPegen_run_parser cpython/Parser/pegen.c:858:9\r\n    #6 0xb43a4d in _PyPegen_run_parser_from_string cpython/Parser/pegen.c:952:14\r\n    #7 0xbf4ec7 in _PyParser_ASTFromString cpython/Parser/peg_api.c:14:21\r\n    #8 0x95dab9 in Py_CompileStringObject cpython/Python/pythonrun.c:1771:11\r\n    #9 0x7d8af6 in builtin_compile_impl cpython/Python/bltinmodule.c:831:14\r\n    #10 0x7d8af6 in builtin_compile cpython/Python/clinic/bltinmodule.c.h:383:20\r\n    #11 0xca3720 in cfunction_vectorcall_FASTCALL_KEYWORDS cpython/Objects/methodobject.c:438:24\r\n    #12 0x5c1b88 in _PyObject_VectorcallTstate cpython/Include/internal/pycore_call.h:92:11\r\n    #13 0x5c1b88 in PyObject_Vectorcall cpython/Objects/call.c:301:12\r\n    #14 0x7f427f in _PyEval_EvalFrameDefault cpython/Python/bytecodes.c:2577:19\r\n    #15 0x7e2a1f in _PyEval_EvalFrame cpython/Include/internal/pycore_ceval.h:88:16\r\n    #16 0x7e2a1f in _PyEval_Vector cpython/Python/ceval.c:1529:12\r\n    #17 0x5c261e in _PyFunction_Vectorcall cpython/Objects/call.c:0\r\n    #18 0x5c193f in _PyVectorcall_Call cpython/Objects/call.c:247:16\r\n    #19 0x5c1f22 in _PyObject_Call cpython/Objects/call.c:330:16\r\n    #20 0x5c2a23 in PyObject_CallObject cpython/Objects/call.c:454:12\r\n    #21 0x593bc4 in LLVMFuzzerTestOneInput python-library-fuzzers/fuzzer.cpp:134:14\r\n    #22 0x461943 in fuzzer::Fuzzer::ExecuteCallback(unsigned char const*, unsigned long) /src/llvm-project/compiler-rt/lib/fuzzer/FuzzerLoop.cpp:611:15\r\n    #23 0x44d0a2 in fuzzer::RunOneTest(fuzzer::Fuzzer*, char const*, unsigned long) /src/llvm-project/compiler-rt/lib/fuzzer/FuzzerDriver.cpp:324:6\r\n    #24 0x45294c in fuzzer::FuzzerDriver(int*, char***, int (*)(unsigned char const*, unsigned long)) /src/llvm-project/compiler-rt/lib/fuzzer/FuzzerDriver.cpp:860:9\r\n    #25 0x47be82 in main /src/llvm-project/compiler-rt/lib/fuzzer/FuzzerMain.cpp:20:10\r\n    #26 0x7eafaded4082 in __libc_start_main /build/glibc-SzIz7B/glibc-2.31/csu/libc-start.c:308:16\r\n    #27 0x44326d in _start\r\n0x62a0000b91f4 is located 4 bytes to the right of 20464-byte region [0x62a0000b4200,0x62a0000b91f0)\r\nallocated by thread T0 here:\r\n    #0 0x552ad6 in __interceptor_malloc /src/llvm-project/compiler-rt/lib/asan/asan_malloc_linux.cpp:69:3\r\n    #1 0x68ee29 in _PyMem_RawMalloc cpython/Objects/obmalloc.c:42:12\r\n    #2 0x691e7a in PyMem_Malloc cpython/Objects/obmalloc.c:587:12\r\n    #3 0xbf580a in tok_new cpython/Parser/tokenizer.c:74:49\r\n    #4 0xbf580a in _PyTokenizer_FromString cpython/Parser/tokenizer.c:884:29\r\n    #5 0xb43752 in _PyPegen_run_parser_from_string cpython/Parser/pegen.c:929:15\r\n    #6 0xbf4ec7 in _PyParser_ASTFromString cpython/Parser/peg_api.c:14:21\r\n    #7 0x95dab9 in Py_CompileStringObject cpython/Python/pythonrun.c:1771:11\r\n    #8 0x7d8af6 in builtin_compile_impl cpython/Python/bltinmodule.c:831:14\r\n    #9 0x7d8af6 in builtin_compile cpython/Python/clinic/bltinmodule.c.h:383:20\r\n    #10 0xca3720 in cfunction_vectorcall_FASTCALL_KEYWORDS cpython/Objects/methodobject.c:438:24\r\n    #11 0x5c1b88 in _PyObject_VectorcallTstate cpython/Include/internal/pycore_call.h:92:11\r\n    #12 0x5c1b88 in PyObject_Vectorcall cpython/Objects/call.c:301:12\r\n    #13 0x7f427f in _PyEval_EvalFrameDefault cpython/Python/bytecodes.c:2577:19\r\n    #14 0x7e2a1f in _PyEval_EvalFrame cpython/Include/internal/pycore_ceval.h:88:16\r\n    #15 0x7e2a1f in _PyEval_Vector cpython/Python/ceval.c:1529:12\r\n    #16 0x5c261e in _PyFunction_Vectorcall cpython/Objects/call.c:0\r\n    #17 0x5c193f in _PyVectorcall_Call cpython/Objects/call.c:247:16\r\n    #18 0x5c1f22 in _PyObject_Call cpython/Objects/call.c:330:16\r\n    #19 0x5c2a23 in PyObject_CallObject cpython/Objects/call.c:454:12\r\n    #20 0x593bc4 in LLVMFuzzerTestOneInput python-library-fuzzers/fuzzer.cpp:134:14\r\n    #21 0x461943 in fuzzer::Fuzzer::ExecuteCallback(unsigned char const*, unsigned long) /src/llvm-project/compiler-rt/lib/fuzzer/FuzzerLoop.cpp:611:15\r\n    #22 0x44d0a2 in fuzzer::RunOneTest(fuzzer::Fuzzer*, char const*, unsigned long) /src/llvm-project/compiler-rt/lib/fuzzer/FuzzerDriver.cpp:324:6\r\n    #23 0x45294c in fuzzer::FuzzerDriver(int*, char***, int (*)(unsigned char const*, unsigned long)) /src/llvm-project/compiler-rt/lib/fuzzer/FuzzerDriver.cpp:860:9\r\n    #24 0x47be82 in main /src/llvm-project/compiler-rt/lib/fuzzer/FuzzerMain.cpp:20:10\r\n    #25 0x7eafaded4082 in __libc_start_main /build/glibc-SzIz7B/glibc-2.31/csu/libc-start.c:308:16\r\n```\r\n# Your environment\r\n\r\nLinux x64, latest cpython `main` branch checkout.\r\n\n\n\u003c!-- gh-linked-prs --\u003e\n### Linked PRs\n* gh-104047\n* gh-104071\n\u003c!-- /gh-linked-prs --\u003e\n","author":{"url":"https://github.com/guidovranken","@type":"Person","name":"guidovranken"},"datePublished":"2023-04-30T16:36:48.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":8},"url":"https://github.com/104016/cpython/issues/104016"}

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Out-of-bounds write in AST parser	https://github.com/python/cpython/issues/104016#top
type-crashA hard crash of the interpreter, possibly with a core dump	https://github.com/python/cpython/issues?q=state%3Aopen%20label%3A%22type-crash%22
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on Apr 30, 2023	https://github.com/python/cpython/issues/104016#issue-1689987219
ece20db...6be7aee	https://github.com/python/cpython/compare/ece20dba120a1a4745721c49f8d7389d4b1ee2a7...6be7aee18c5b8e639103df951d0d277f4b46f902
gh-104016: Fixed off by 1 error in f string tokenizer #104047	https://github.com/python/cpython/pull/104047
gh-104016: Skip test for deeply neste f-strings on wasi #104071	https://github.com/python/cpython/pull/104071
type-crashA hard crash of the interpreter, possibly with a core dump	https://github.com/python/cpython/issues?q=state%3Aopen%20label%3A%22type-crash%22
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