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Title: gh-143378: Fix UAF when `BytesIO` is concurrently mutated during `write` operations by superboy-zjc · Pull Request #143408 · python/cpython · GitHub

Open Graph Title: gh-143378: Fix UAF when `BytesIO` is concurrently mutated during `write` operations by superboy-zjc · Pull Request #143408 · python/cpython

X Title: gh-143378: Fix UAF when `BytesIO` is concurrently mutated during `write` operations by superboy-zjc · Pull Request #143408 · python/cpython

Description: PyObject_GetBuffer() can execute user code (e.g. via buffer), which may close or otherwise mutate a BytesIO object while write() or writelines() is in progress. This could invalidate the internal b...

Open Graph Description: PyObject_GetBuffer() can execute user code (e.g. via buffer), which may close or otherwise mutate a BytesIO object while write() or writelines() is in progress. This could invalidate the internal b...

X Description: PyObject_GetBuffer() can execute user code (e.g. via buffer), which may close or otherwise mutate a BytesIO object while write() or writelines() is in progress. This could invalidate the internal b...

Opengraph URL: https://github.com/python/cpython/pull/143408

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