PSF-2023-3

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Import Source

https://github.com/psf/advisory-database/blob/main/advisories/python/PSF-2023-3.json

JSON Data

https://api.test.osv.dev/v1/vulns/PSF-2023-3

Aliases

Published

2023-06-07T00:00:00Z

Modified

2025-08-11T14:45:01.781111Z

Summary

[none]

Details

CPython v3.12.0 alpha 7 was discovered to contain a heap use-after-free via the function ascii_decode at /Objects/unicodeobject.c.

Database specific

{
    "cwe_ids": [
        "CWE-416"
    ]
}

References

Affected packages

Git / github.com/python/cpython

Affected ranges

Type: GIT
Repo: https://github.com/python/cpython
Events: Introduced

1ef61cf71a218c71860ff6aecf0fd51edb8b65dc

Fixed

d5a97074d24cd14cb2a35a2b1ad3074863cde264

Database specific

vanir_signatures

[
    {
        "signature_version": "v1",
        "id": "PSF-2023-3-54f249cb",
        "source": "https://github.com/python/cpython/commit/d5a97074d24cd14cb2a35a2b1ad3074863cde264",
        "digest": {
            "length": 3735.0,
            "function_hash": "246454790113584125124450278536411816426"
        },
        "deprecated": false,
        "target": {
            "function": "tok_get_fstring_mode",
            "file": "Parser/tokenizer.c"
        },
        "signature_type": "Function"
    },
    {
        "signature_version": "v1",
        "id": "PSF-2023-3-ccff2eec",
        "source": "https://github.com/python/cpython/commit/d5a97074d24cd14cb2a35a2b1ad3074863cde264",
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "51267681898860069028679615138883177799",
                "213093290520206118406422764680253202129",
                "192193823543881691897098346576838619575",
                "240189861850278322221601354770139566320"
            ]
        },
        "deprecated": false,
        "target": {
            "file": "Parser/tokenizer.c"
        },
        "signature_type": "Line"
    }
]