gh-127165: Disallow embedded NULL characters in _interpreters
#127199
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picnixz
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Nov 27, 2024
Co-authored-by: Bénédikt Tran <10796600+picnixz@users.noreply.github.com>
kumaraditya303
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Dec 1, 2024
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Thanks @ZeroIntensity for the PR, and @kumaraditya303 for merging it 🌮🎉.. I'm working now to backport this PR to: 3.13. |
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…pythonGH-127199) (cherry picked from commit 46bfd26) Co-authored-by: Peter Bierma <zintensitydev@gmail.com>
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GH-127463 is a backport of this pull request to the 3.13 branch. |
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Currently, null characters in shared namespaces cause truncation of the actual string, because it's eventually passed to
PyUnicode_FromString, which uses thestrleninstead of the actual size. Then, things break because the string unexpectedly is not in the namespace dictionary. This fixes that by just raising if we find an embedded NULL character in_copy_string_obj_raw.We could support embedded NULLs by storing the size alongside the name, but this is much simpler (and in practice, nobody is trying to name variables containing
\x00).concurrent.futures.interpreter.WorkerContext#127165